Highlights of Magnetism (GMAG) Talks @ APS 2021 March Meeting
American Physics Society (APS) March meeting is one of the largest physics meetings in the world. In 2021, the meeting will be held online due to COVID-19.
To help the community quickly catch up on the work to be presented in this meeting, Paper Digest Team processed all talk abstracts, and generated one highlight sentence (typically the main topic) for each. Readers are encouraged to read these machine generated highlights / summaries to quickly get the main idea of each talk. This article is on the talks related to Magnetism (GMAG).
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TABLE : Magnetism (GMAG)
| Title | Authors | Highlight | Session | |
|---|---|---|---|---|
| 1 | Electrostatic Control of Magnetism in a van der Waals Ferromagnetic Semiconductor | Verzhbitskiy, Ivan; Kurebayashi, Hidekazu; Cheng, Haixia; Zhou, Jun; Khan, Safe; Feng, Yuan; Eda, Goki | We find the magnetic easy-axis of doped CGT to lie within the plane of the crystal, which is in stark contrast to the out-of-plane easy-axis of the pristine material. | Session 1: 2D Magnets |
| 2 | Angle-resolved photoemission spectroscopy and spin dynamics measurements of MBE-grown ferromagnetic CrTe1-δ thin films | Ou, Yongxi; Pillsbury, Timothy; Rable, Jeffrey; Richardella, Anthony; Samarth, Nitin | Here, we report the MBE synthesis of ferromagnetic TMD thin films of CrTe 1-δ. | Session 1: 2D Magnets |
| 3 | Néel-type skyrmion in WTe2/Fe3GeTe2 van der Waals heterostructure | Wu, Yingying; Zhang, Senfu; zhang, junwei; Yin, Gen; Mao, Zhiqiang; Zhang, Xixiang; Wan, Caihua; Han, Xiufeng; Wang, Kang-Lung | In this work, we demonstrate the Dzyaloshinskii-Moriya interaction and Néel-type skyrmions are induced at the WTe 2/Fe 3GeTe 2 interface, a van der Waals heterostructure. | Session 1: 2D Magnets |
| 4 | Spin-orbit engineering in ferromagnetic van der Waals materials | Tafti, Fazel; Tartaglia, Thomas; Lado, Jose; Chan, Julia; Bahrami, Faranak; Burch, Kenneth; Ran, Ying | We will present triangular phase diagrams of the mixed halides and demonstrate that (a) the Curie and Weiss temperatures can be tuned continuously, (b) a frustration regime exists in these materials near CrCl 3, and (c) a metamagnetic transition is observed in the bulk crystals of CrClBrI, reminiscent of a spin-flip transition in bilayers of CrI 3. | Session 1: 2D Magnets |
| 5 | Structural monoclinicity and its evolution across magnetic phase transitions in few-layer CrI3 | Guo, Xiaoyu; Jin, Wencan; Ye, Zhipeng; Ye, Gaihua; Yang, Bowen; Kim, Hyun Ho; Xie, Hongchao; Tian, Shangjie; Yan, Shaohua; Lei, Hechang; Tsen, Adam; He, Rui; Zhao, Liuyan | Here, using polarization-resolved magneto-Raman spectroscopy, we have investigated layer-number, temperature, and magnetic field dependence of Raman spectra. | Session 1: 2D Magnets |
| 6 | Large cross-polarized Raman signal in CrI3, a first-principles study | Lei, Ming; Coh, Sinisa | We find unusually large cross-polarized Raman signature of Ag phonon mode in CrI3, in agreement with experiments. | Session 1: 2D Magnets |
| 7 | Competing antiferromagnetic order in transition metal dichalcogenides FexNbS2 | Wu, Shan; Xu, Zhijun; Haley, Shannon; Weber, Sophie; Maniv, Eran; Qiu, Yiming; Aczel, Adam; Neaton, Jeffrey; Analytis, James; Birgeneau, Robert | We comprehensively investigated the magnetic structures for two successive transitions at and off- stoichiometry. | Session 1: 2D Magnets |
| 8 | Temperature- and magnetic field-dependent Raman spectroscopy of layered, antiferromagnetic FePS3 | Simpson, Jeffrey; McCreary, Amber; Mai, Thuc; Garrity, Kevin; Dennis, Cindi; Hight Walker, Angela; Valdes Aguilar, Rolando | Using temperature- and magnetic field-dependent Raman spectroscopy as an optical probe of magnetic structure, we demonstrate that one of these Raman-active modes below T N is a magnon with a frequency of ≈3.7 THz (≈122 cm -1). | Session 1: 2D Magnets |
| 9 | Spin wave excitations in van der Waals honeycomb ferromagnets | Chen, Lebing; Chung, Jae-Ho; Dai, Pengcheng | In this talk, we will review and report the past and recent inelastic neutron scattering measurements of spin wave excitations in van der Waals ferromagnets CrX 3 (X = Br, Cr, I) and Cr 2Z 2Te 6 (Z = Si, Ge). | Session 1: 2D Magnets |
| 10 | Magnetothermal properties of honeycomb ferromagnet CrGeTe3 | Wakefield, Joshua; Kurumaji, Takashi; Suzuki, Takehito; Checkelsky, Joseph | We report the physical properties of single crystals of CrGeTe 3 grown with a self flux method focusing on magnetothermal effects. | Session 1: 2D Magnets |
| 11 | Magnetic-Order-Induced Band-Shift and Carrier Dynamics in CrSiTe3 Nanosheets | Jnawali, Giriraj; Pournia, Seyyedesadaf; Abbasian Shojaei, Iraj; Smith, Leigh; Gayles, Jacob; Ortiz, Brenden; Wilson, Stephen | Here we show the band-edge structure and photoresponse of the layered ferromagnet CrSiTe 3 (CST). | Session 1: 2D Magnets |
| 12 | Techniques for probing 2D magnetism with quantum coherent spins | Zhang, Xinyue; Wang, Yuxuan; Tartaglia, Thomas; Tafti, Fazel; Zhou, Brian | In this talk, we discuss the development and optimization of techniques for characterizing 2D magnetic systems with NV center magnetometers. | Session 1: 2D Magnets |
| 13 | Strain-induced change in two-dimensional antiferromagnets | Chung, Ting Fung; Zhang, Peiyao; Li, Quanwei; Yang, Sui; Zhang, Xiang | Here, we performed optical measurements to examine the effect of strain on the magnetic states of a few-layer CrI3. | Session 1: 2D Magnets |
| 14 | Cr-based van der Waals compounds as a platform to reach two dimensional ferromagnets. A comparative study between CrBr3 and Cr2Ge2Te6 | Fumega, Adolfo; Blanco-Canosa, Santiago; Rivadulla, Francisco; Pardo, Victor | In this talk, we present a pressure-dependent comparative study, both theoretical and experimental, between CrBr 3 and Cr 2Ge 2Te 6. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 15 | Electrical-Current-Tuned Ferromagnetism in 2D-van der Waals System Cr2Ge2Te6 | Ni, Yifei; Zhao, Hengdi; Hu, Bing; Selter, Sebastian; Aswartham, Saicharan; Büchner, Bernd; Cao, Gang | Here, we report our investigation on the electrical-current-tuned structural and physical properties of Cr 2Ge 2Te 6. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 16 | Room-Temperature Ferromagnetism, Perpendicular Anisotropy, and Reverse Magnetostriction in 2D MnGaN | Ma, Yingqiao; Hunt, Diego; Meng, Kengyuan; Erickson, Tyler; Yang, Fengyuan; Barral, Maria Andrea; Ferrari, Valeria; Smith, Arthur | Room-Temperature Ferromagnetism, Perpendicular Anisotropy, and Reverse Magnetostriction in 2D MnGaN | Session 2: 2D Semiconductors: Transport and Magnetism |
| 17 | First-principles study on correlations and contact barriers in magnetic Fe3GeTe2/CrGeTe3 heterobilayer | Ko, Eunjung; Son, Young-Woo | Based on a first-principles computational method treating the local Coulomb repulsion of U and Hund’s coupling of J separately, we present the effects of these important interactions on the electronic and magnetic structures of a layered ferromagnetic semiconductor CrGeTe 3. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 18 | Electron transport in dual-gated three-layer MoS2 | Masseroni, Michele; Davatz, Tim; Pisoni, Riccardo; Ihn, Thomas; Ensslin, Klaus | We investigate the conduction band of a dual-gated three layer MoS 2 by means of magnetotransport experiments. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 19 | First principles investigation of structural and magnetic properties of the bulk layered compound Fe5GeTe2 | Reichanadter, Jonathan; Neaton, Jeffrey | Here we perform ab-initio density functional theory calculations of the structural, electronic, and magnetic properties of pristine and doped Fe5GeTe2. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 20 | Creating half-metallicity in two-dimensional magnetoelectric semiconductors | Gong, Cheng; Gong, Shi-Jing; Lee, Geunsik; Rappe, Andrew; Zhang, Xiang | In this talk, I will progressively introduce an appealing approach [4, 5] to creating half-metallicity in 2D magnetoelectric semiconductors. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 21 | Magnetic-Field-Induced Quantum Phase Transitions in bulk CrI3* | Ye, Gaihua; Ye, Zhipeng; He, Rui; Kim, Hyun Ho; Yang, Bowen; Tsen, Adam; Li, Siwen; Luo, Xiangpeng; Sun, Kai; Zhao, Liuyan | Using magnetic field and temperature dependent circularly polarized Raman spectroscopy of phonons and magnons (spin waves), we reveal a novel mixed state of layered AFM and FM in 3D CrI 3 bulk crystals where the layered AFM survives in the surface layers and the FM appears in deeper bulk layers. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 22 | Polaronic character of excitons in a two-dimensional ferromagnet CrI3* | Ye, Zhipeng; Ye, Gaihua; Rojas, Laura; He, Rui; Kim, Hyun Ho; Yang, Bowen; Yin, Fangzhou; Tsen, Adam; Jin, Wencan; Luo, Xiangpeng; Horng, Jason; Xu, Gongjun; Deng, Hui; Sun, Kai; Zhao, Liuyan | Polaronic character of excitons in a two-dimensional ferromagnet CrI3* | Session 2: 2D Semiconductors: Transport and Magnetism |
| 23 | Flat band magnetism in electride monolayer LaBr | Xiao, Chengcheng; Mostofi, Arash; Bristowe, Nicholas | In this work, we focus on LaBr in monolayer form. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 24 | The surprising effect of electron correlations on exchange interactions and spin excitations in magnetic 2D van der Waals materials | Ke, Liqin; Katsnelson, Mikhail | Remarkably, this approach identifies a novel correlation-enhanced interlayer super-superexchange, which rotates the magnon Dirac lines off, and introduces a gap along, the Γ- K- M path. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 25 | Anomalous Klein tunneling of optically controlled Dirac particles with elliptical dispersion | Fekete, Paula; Iurov, Andrii; Zhemchuzhna, Liubov; Gumbs, Godfrey; Huang, Danhong | We investigate electron tunneling through an atomically smooth square potential barrier for the dice lattice and graphene under a linearly polarized, off-resonance, and high-frequency dressing field. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 26 | Quantum transport in magnetic two-dimensional materials | Deng, Yujun | In this talk, I will focus on two magnetic 2D materials, ferromagnetic metal Fe 3GeTe 2 and intrinsic magnetic topological insulator MnBi 2Te 4. | Session 2: 2D Semiconductors: Transport and Magnetism |
| 27 | Spin-polarized conductivity and spin-dependent Seebeck effect in magnetized graphene | Ghiasi, Talieh; Kaverzin, Alexey; Dismukes, Avalon; de Wal, Dennis; Roy, Xavier; Van Wees, Bart | Spin-polarized conductivity and spin-dependent Seebeck effect in magnetized graphene | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 28 | Chiral spin excitations in graphene with proximity-induced spin-orbit coupling | Kumar, Abhishek; Maiti, Saurabh; Maslov, Dmitrii | Motivated by recent observations of CSE in the surface state of a 3D topological insulator, Bi2Se3, and in semiconductor heterostructures, we develop a theory of CSE in doped graphene with proximity-induced SOC both of Rashba or valley-Zeeman (VZ) types. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 29 | Spin Filtering Manipulation in WS2-based Magnetic Tunnel Junctions | Zatko, Victor; Galbiati, Marta; Galceran, Regina; Godel, Florian; Brus, Pierre; Bezencenent, Odile; Martin, Marie-Blandine; Servet, Bernard; Och, Mauro; Mattevi, Cecilia; Petroff, Frédéric; Fert, Albert; Dlubak, Bruno; Seneor, Pierre | We will detail a protocol to fabricate spin valves based on CVD grown WS 2 with step by step characterizations in support (Raman, photoluminescence, AFM). | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 30 | Spontaneous Valley Polarization of Interacting Carriers in a Monolayer Semiconductor | Crooker, Scott; Li, Jing; Goryca, Mateusz; Xu, Xiaodong; Wilson, Nathan; Stier, Andreas | We report magneto-absorption spectroscopy of electrostatically-gated WSe 2 monolayers in high magnetic fields up to 60 tesla. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 31 | Spatially-resolved Measurements of Spin Valley Polarization in Monolayer WSe2 | Batalden, Spencer; Mujid, Fauzia; Park, Jiwoong; Sih, Vanessa | Spatially-resolved Measurements of Spin Valley Polarization in Monolayer WSe2 | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 32 | Imaging the valley and orbital Hall effect in monolayer MoS2 | Haney, Paul; Amin, Vivek; Xue, Fei | We identify a previously unrecognized consequence of Berry curvature in these materials: an electric-field-induced change in the electrons’ charge density orientation. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 33 | Orbital Hall effect in bilayer transition metal dichalcogenides | Cysne, Tarik; Canonico, Luis; Costa, Marcio; Nardelli, Nicholas; Muniz, Roberto; Rappoport, Tatiana | Using Density Functional Theory, we show that the 2H-structural phase of a MoS 2 bilayer exhibits large orbital Hall signal in its insulating phase, in the absence of both SHE and VHE. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 34 | Orbital and Spin Hall effect: Effect of symmetry breaking and Density-Functional results for MoS2 | SAHU, PRATIK; Bhowal, Sayantika; Satpathy, Sashi | As a concrete example, we present our results from density-functional calculations for the 2D transition-metal-dichalcogenide (TMDC) materials such as MoS 2, a broken symmetry system. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 35 | Tunable Berry curvature and topological Nernst effect in biased bilayer WSe2 | Vargiamidis, Vassilios; Vasilopoulos, Panagiotis; Neophytou, Neophytos | We investigate the Berry curvature and anomalous thermoelectric transport in bilayer WSe 2 with broken inversion symmetry, e.g., due to a gate electric field, regardless of time-reversal symme-try. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 36 | Ab initio spin dynamics and spin-phonon relaxation in graphene multilayers | Habib, Adela; Xu, Junqing; Ping, Yuan; Sundararaman, Ravishankar | To this front, we present our investigations of spin dynamics and in particular spin-phonon relaxation fully from first-principles in single and bi-layer graphene in the presence of an external electric field and/or hBN substrate. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 37 | Enhancing Tunneling Current in CrX3 (X = Cl, I) Junctions using Transition Metal Dichalcogenides | Heath, Jonathan; Kuroda, Marcelo | Here we use first principles calculations within the density functional theory and Landauer’s formalism of ballistic transport to characterize 2H- MSe 2 ( M = Nb, Ta)/Cr X 3 ( X = Cl, I) based MTJs. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 38 | Orbital Hall insulating phase in transition metal dichalcogenide monolayers | Canonico, Luis; Cysne, Tarik; Molina-Sanchez, Alejandro; Muniz, Roberto; Rappoport, Tatiana | We showed that the 2H transition metal dichalcogenide (TMD) monolayers are orbital-Hall insulators [1]. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 39 | Valley-controlled transport in graphene/WSe2 heterostructures under an off-resonant polarized light | Zubair, Muhammad; Vasilopoulos, Panagiotis; Tahir, Muhammad | We investigate the electronic dispersion and transport properties of graphene/WSe 2 heterostructures in the presence of a proximity-induced spin-orbit coupling λ v, sublattice potential Δ, and an off-resonant circularly polarized light of frequency Ω and effective energy term Δ Ω. | Session 3: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 40 | Spin-orbit proximity effects in graphene-based heterostructures | Casanova, Felix | In this talk, I will show how SOC can be induced in graphene by proximity with another material, allowing us to manipulate spin currents. | Session 4: Advances in Spin Transport and Proximity Near Nanoscale Interfaces and Materials |
| 41 | Spin-orbit proximity phenomena and tunable spin-to-charge interconversion in van der Waals heterostructures | Valenzuela, Sergio | In this talk, I will present recent experiments in which we investigate the spin dynamics in graphene-transition metal dichalcogenides heterostructures. | Session 4: Advances in Spin Transport and Proximity Near Nanoscale Interfaces and Materials |
| 42 | Theory of oblique-field magnetoresistance from spin centers in three-terminal spintronic devices | Harmon, Nicholas | We present a general stochastic Liouville theory of electrical transport across a barrier between two conductors that occurs via sequential hopping through a single defect’s spin-0 to spin-1/2 transition. | Session 4: Advances in Spin Transport and Proximity Near Nanoscale Interfaces and Materials |
| 43 | Spin caloritronics and magnon transport in (anti) ferromagnetic Van der Waals heterostructures | Van Wees, Bart | I will describe how magnons can be generated thermally, by means of the spin Seebeck effect, but also by electrical means, using the spin Hall effect for conversion of charge currents into magnon spin currents (and vice versa). | Session 4: Advances in Spin Transport and Proximity Near Nanoscale Interfaces and Materials |
| 44 | Harnessing chirality in hybrid semiconductors | Berry, Joseph | This presentation will focus on efforts to control and manipulate the spin degree of freedom in these HOIS systems. | Session 4: Advances in Spin Transport and Proximity Near Nanoscale Interfaces and Materials |
| 45 | Novel Spin Torques in Antiferromagnetic FeRh | Gibbons, Jonathan; Dohi, Takaaki; Amin, Vivek; Xue, Fei; Arava, Hanu; Saglam, Hilal; Liu, Yuzi; Pearson, John; Petford-Long, Amanda; Haney, Paul; Stiles, Mark; Fukami, Shunsuke; Hoffmann, Axel | Novel Spin Torques in Antiferromagnetic FeRh | Session 5: Antiferromagnetic Spintronics |
| 46 | Staggered spin-orbit torques in antiferromagnets | Xue, Fei; Haney, Paul | Spin-orbit torques in a heterostructure composed of heavy metals and ferromagnets have been widely studied, with the aim of efficient electrical switching of the magnetization. | Session 5: Antiferromagnetic Spintronics |
| 47 | Nuclear spin Seebeck effect in antiferromagnets | Reitz, Derek; Tserkovnyak, Yaroslav | Nuclear spin Seebeck effect in antiferromagnets | Session 5: Antiferromagnetic Spintronics |
| 48 | Temperature dependence of the anisotropic magnetoresistance of the metallic antiferromagnet Fe2As | Wu, Junyi; Karigerasi, Manohar; Shoemaker, Daniel; Lorenz, Virginia; Cahill, David | We study AMR of single crystals of AF Fe 2As from T=5 K to above the Néel temperature, T N ∼ 353 K. With an applied magnetic field B rotating in the (001) plane, we observe a peak-to-peak AMR change of 1.3% for B>1 T at T=5 K, one order of magnitude larger than in CuMnAs, a widely studied candidate for AF spintronics. | Session 5: Antiferromagnetic Spintronics |
| 49 | Quantum spin torque driven transmutation of antiferromagnetic Mott insulator | Petrovic, Marko; Mondal, Priyanka; Feiguin, Adrian; Nikolic, Branislav | Here, we use the time-dependent density matrix renormalization group approach to predict how the injection of spin current into a normal metal coupled to AFMI induces a nonzero expectation value of AFMI localized spins. | Session 5: Antiferromagnetic Spintronics |
| 50 | Exceptional Point Location Dependence on Dipolar Interactions in Synthetic Antiferromagnets | Jeffrey, Teresa; Zhang, Wei; Sklenar, Joseph | In this work, we calculate EPs in S-AFMs using micromagnetic simulations [2]. | Session 5: Antiferromagnetic Spintronics |
| 51 | Neuromorphic Memory Rings based on Artificial Antiferromagnetic Neurons | Bradley, Hannah; Tyberkevych, Vasyl | Here we investigate the dynamical behavior of neuromorphic memory rings – periodic pulse generators formed by several AFM neurons coupled in a ring structure. | Session 5: Antiferromagnetic Spintronics |
| 52 | Spontaneous Hall and Nernst effects in antiferromagnets | Reichlova, Helena; Janda, Tomas; Markou, Anastasios; Kriegner, Dominik; Schlitz, Richard; Lopez Seeger, Rafael; Kounta, Ismaila; Zelezny, Jakub; Nemec, Petr; Schmoranzerova, Eva; Badura, Antonin; Thomas, Andy; Felser, Claudia; Baltz, Vincent; Michez, Lisa; Sinova, Jairo; Jungwirth, Thomas; Smejkal, Libor; Wunderlich, Joerg; Goennenwein, Sebastian | We demonstrate that the local magneto-thermal response can be employed for a spatially resolved visualization of the magnetic properties of the antiferromagnet [1]. | Session 5: Antiferromagnetic Spintronics |
| 53 | Spin-torque driven self-oscillations in non-collinear coplanar antiferromagnets | Shukla, Ankit; Rakheja, Shaloo | In this work, we use a combination of micromagnetics and an effective pendulum equation to model the oscillation dynamics in chiral systems like Mn3Ir and Mn3Sn. | Session 5: Antiferromagnetic Spintronics |
| 54 | Spin-torque switching of the noncollinear antiferromagnetic order in antiperovskites | Gurung, Gautam; Shao, Ding-Fu; Tsymbal, Evgeny | Here, we predict an electric control of the noncollinear AFM order in the antiperovskite materials by means of spin-transfer torque. | Session 5: Antiferromagnetic Spintronics |
| 55 | Spin superfluidity in noncollinear antiferromagnets | Li, Bo; Kovalev, Alexey | We extend the description of spin superfluidity to noncollinear antiferromagnets (nAFMs) and explore various realizations in exchange interaction dominated hexagonal antiferromagnets. | Session 5: Antiferromagnetic Spintronics |
| 56 | Probing the surface magnetism of antiferromagnets | Schuller, Ivan; Lapa, Pavel; Lee, Minhan; Roshchin, Igor; Belashchenko, Kirill | Using antiferromagnet-ferromagnet spin valves, we detected and studied uncompensated magnetization at the boundary of an antiferromagnetic FeF 2(110) layer at different temperatures and magnetic fields. | Session 5: Antiferromagnetic Spintronics |
| 57 | Observation of magnon-polarons in a uniaxial antiferromagnetic insulator Cr2O3 | Li, Junxue; Simensen, Haakon; Reitz, Derek; Sun, Qiyang; Yuan, Wei; Li, Chen; Tserkovnyak, Yaroslav; Brataas, Arne; Shi, Jing | Here we report an observation of antiferromagnetic (AFM) magnon-polarons in a uniaxial AFM insulator Cr 2O 3. | Session 5: Antiferromagnetic Spintronics |
| 58 | X-ray Magnetic Linear Dichroism Studies of Electrical Switching of Antiferromagnetic Order in α-Fe2O3 Epitaxial Films | Cogulu, Egecan; Statuto, Nahuel; Cheng, Yang; Yu, Sisheng; Yang, Fengyuan; Chopdekar, Rajesh; Ohldag, Hendrik; Kent, Andrew | In this study, we report direct observation of spin reorientation in response to current pulses in (0001) α-Fe 2O 3/Pt heterostructures. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 59 | Experimental evidence of the strain-enhanced magnetic anisotropy in antiferromagnet Cr2O3 thin films | Liu, Haoyu; Yuan, Wei; Li, Junxue; Ortiz, Victor; Shi, Jing | Here we perform spin Seeback effect (SSE) measurements on epitaxial Cr 2O 3 thin films grown on Al 2O 3 substrates to demonstrate the presence of the strain-enhanced magnetic anisotropy. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 60 | First-principles study on the new eightfold magnetic anisotropy in a two-dimensional oxide | Chen, Hanghui; Cui, Zhangzhang; Grutter, Alexander; Zhou, Hua; Cao, Hui; Dong, Yongqi; Gilbert, Dustin; Wang, Jingyuan; Liu, Yi-Sheng; Ma, Jiaji; Hu, Zhenpeng; Guo, Jinghua; Xia, Jing; Kirby, Brian; Shafer, Padraic; Arenholz, Elke; Zhai, Xiaofang; Lu, Yalin | Our work demonstrates that correlation effects can be exploited to substantially change spin-orbit interactions, stabilizing unprecedented properties in two-dimensional magnets and opening rich opportunities for low-power, multistate device applications. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 61 | Spatially resolving spin texture control and manipulation in ferroic heterostructures | Chopdekar, Rajesh | I will discuss the use of X-ray photoemission electron microscopy (PEEM) with both x-ray linear and circular dichroism to spatially and chemically resolve shape- and voltage-controlled ferroic order in heterostructures of AFM, ferroelectric(FE), and ferromagnetic (FM) layers including (La,Sr)FeO 3 3,4, and CoFe/(La,Bi)FeO 3 5. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 62 | Engineering Magnetic Interactions in Complex Oxide Heterostructures | Takamura, Yayoi; Lee, Michael; Lyu, Peifen; Chopdekar, Rajesh; Scholl, Andreas; Retterer, Scott | These studies demonstrate that complex oxide heterostructures provide a unique platform for engineering spin textures for future memory and spintronic device applications. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 63 | Emergent Ferromagnetism at the (111) LaNiO3/LaAlO3 Interface | Kane, Margaret; Vailionis, Arturas; Riddiford, Lauren; Mehta, Apurva; Grutter, Alexander; Balakrishnan, Purnima; N’Diaye, Alpha; Suzuki, Yuri | Recently, we have found that the unique strain state at the (111) LaNiO 3/LaAlO 3 interface stabilizes a ferromagnetic, insulating phase in LNO. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 64 | Site-specific spectroscopic measurement of spin and charge in (LuFeO3)m/(LuFe2O4)1 multiferroic superlattices | Fan, Shiyu | This is because macroscopic techniques characterize average responses rather than the role of individual iron centres. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 65 | Geometric influence on the Net Magnetic Moment in LaCoO3 thin films | Joshi, Toyanath; Belanger, David; Wen, Wen; Lederman, David | Here, we will present a common basis for these strikingly different magnetic behaviors under different strain conditions using x-ray diffraction and magnetization measurements on PLD grown LaCoO 3 thin films. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 66 | Topotactic Transformations in Cobaltite Thin Films | Chiu, I-Ting; Lee, Minhan; Cheng, Shaobo; Zhang, Zhen; Zhang, Shenli; Lapa, Pavel; Heki, Larry; Feng, Mingzhen; Shafer, Padraic; N’Diaye, Alpha; Mehta, Apurva; Schuller, Jon; Galli, Giulia; Ramanathan, Shriram; Zhu, Yimei; Schuller, Ivan; Takamura, Yayoi | In this work, a series of topotactic transformations between these perovskite-related phases has been observed in La 0.7Sr 0.3CoO 3- d thin films upon annealing under highly reducing conditions. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 67 | Octahedral continuity and emergent magnetism in confined SrRuO3 | Ali, Zeeshan; Saghayezhian, Mohammad; Shin, Donghan; Wang, Zhen; O’Hara, Andrew; Siwakoti, Prahald; Howe, David; Zhu, Yimei; Pantelides, Sokrates; Zhang, Jiandi | We report experimental and theoretical investigations of emergent properties of heterostructures with one- or two-unit cells of SrRuO 3 (SRO) between two materials, SrTiO 3 (STO, insulating, diamagnetic) or CaRuO 3 (CRO, metallic, paramagnetic). | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 68 | Magnetoelectric coupling and decoupling in multiferroic hexagonal YbFeO3 thin films | Li, Xin; Yun, Yu; Xu, Xiaoshan | In this work, we have studied the response of magnetization to ferroelectric switching in thin-film hexagonal YbFeO 3, a paradigmatic improper multiferroic. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 69 | Reversible hydrogen-ion control of the antiferromagnetic anisotropy in α-Fe2O3 | Jani, Hariom; Linghu, Jiajun; Hooda, Sonu; Chopdekar, Rajesh; LI, Changjian; Omar, Ganesh Ji; Prakash, Saurav; Yonghua, Du; yang, Ping; Banas, Agnieszka; Banas, Krzysztof; Ghosh, Siddhartha; Ojha, Sunil; Umapathy, G. R.; Kanjilal, Dinakar; Ariando, Ariando; Pennycook, Stephen; Arenholz, Elke; Radaelli, Paolo G.; Coey, J M; Feng, Yuan; Venkatesan, Thirumalai | Here we demonstrate a novel proof-of-principle ionic approach to drive a 90° spin-reorientation reversibly in the earth-abundant antiferromagnetic insulator α-Fe 2O 3 (hematite) – now an emerging spintronic material that hosts exotic topological antiferromagnetic spin-textures and long magnon-diffusion lengths. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 70 | Exploring the interplay between electronic doping, magnetism, and Ni diffusion in NiO from first principles. | Waters, Michael; Rondinelli, James | Our work highlights the complexity of diffusion in even structural simply but strongly correlated oxides with practical recommendations for corrosion resistance that may be transferable to diffusion-mediated redox processes in energy storage materials. | Session 6: Antiferromagnetism and Emergent Magnetism in Oxide Thin Films |
| 71 | Imaging skyrmions in polycrystalline FeGe thin films | Bagues Salguero, Nuria; Selcu, Camelia; Wang, Binbin; Liu, Tao; Repicky, Jacob; Cheng, Shuyu; Boona, Stephen; Gupta, Jay; Randeria, Mohit; Pelekhov, Denis; McComb, David; Kawakami, Roland | Lorentz Transmission Electron Microscopy (LTEM) is a well-established technique for imaging magnetic textures like skyrmions, but this approach is challenging to apply to samples in which contrast comes from features besides the magnetic texture, such as grain boundaries in polycrystalline materials, especially if the grains and skyrmions are similar in size. | Session 7: Bulk Chiral Magnets |
| 72 | Entropic signatures of the skyrmion lattice phase in MnSi1-xAlx and Fe1-yCoySi. | Dhital, Chetan; DiTusa, John | We compare MnSi and Fe 1-yCo ySi based on the change in magnetic entropy during conical to magnetic skyrmion lattice transition. | Session 7: Bulk Chiral Magnets |
| 73 | Local structural distortions and magnetism in lacunar spinel compounds | Zuo, Julia; Schueller, Emily; Seshadri, Ram; Wilson, Stephen | We present results of local structural characterization on lacunar spinels in connection to their magnetic properties. | Session 7: Bulk Chiral Magnets |
| 74 | Structural and magnetic studies of the skyrmionic materials GaV4S8-ySey | Holt, Samuel; Štefančič, Aleš; Ritter, Clemens; Gutmann, Matthias; Lees, Martin; Balakrishnan, Geetha | We present detailed structural and magnetic property investigations using X-ray and neutron diffraction techniques, and both ac and dc magnetic susceptibility measurements across the entire series of materials [3,4]. | Session 7: Bulk Chiral Magnets |
| 75 | Topological Hall effect and the magnetic states of Nowotney chimney ladder compound Cr11Ge19 | Li, Yu; Gui, Xin; Khan, Mojammel Alam; Young, David; DiTusa, John; Xie, Weiwei | We have investigated the magnetic and charge transport properties of single crystals of Nowotney Chimney Ladder compound Cr11Ge19 and mapped out a comprehensive phase diagram reflecting the complicated interplay between the Dzyaloshinskii-Moriya (DM) interaction, the dipolar interaction, and the magnetic anisotropy. | Session 7: Bulk Chiral Magnets |
| 76 | Reciprocal-space structure of neutron scattering from Stoner excitations in MnSi | Jin, Zhendong; Li, Yangmu; Hu, Biaoyan; Liu, Yiran; Iida, Kazuki; Kamazawa, Kazuya; Stone, Matthew; Kolesnikov, Alexander; Abernathy, Douglas; Zhang, Xiangyu; Chen, Haiyang; Wang, Yandong; Zaliznyak, Igor; Tranquada, John; Li, Yuan | Here we present a systematic inelastic neutron scattering study of the prototypical itinerant magnet MnSi, along with first-principles and model-calculational analyses. | Session 7: Bulk Chiral Magnets |
| 77 | Magnetic Excitations of the Hybrid Multiferroic (ND4)2[FeCl5(D2O)] | Bai, Xiaojian; Fishman, Randy; Sala, Gabriele; Pajerowski, Daniel; Garlea, Vasile; Hong, Tao; Lee, Minseong; Fernandez-Baca, Jaime; Cao, Huibo; Tian, Wei | Our detailed data analysis using linear spin wave theory reveals that the spin dynamics of both multiferroic phases can be well-described by a Heisenberg Hamiltonian with an easy-plane anisotropy. | Session 7: Bulk Chiral Magnets |
| 78 | Single crystal studies on the newly discovered multiferroic LiFe(WO4)2 | Biesenkamp, Sebastian; Gorkov, Dmitry; Brüning, Daniel; Bertin, Alexandre; Fröhlich, Tobias; Fabreges, Xavier; Goukassov, Arsen; Meven, Martin; Becker, Petra; Bohatý, Ladislav; Lorenz, Thomas; Braden, Markus | Here we report on our single crystal studies on LiFe(WO 4) 2 and the respective nuclear and magnetic structure determination. | Session 7: Bulk Chiral Magnets |
| 79 | Strong influence of magneto-dipole interactions on size and form of antiskyrmions and skyrmions | Parkin, Stuart | Strong influence of magneto-dipole interactions on size and form of antiskyrmions and skyrmions | Session 7: Bulk Chiral Magnets |
| 80 | Low-energy magnons in the chiral ferrimagnet Cu2OSeO3: A coarse-grained approach | Luo, Yi; Marcus, Guy; Trump, Benjamin; Kindervater, Jonas; Stone, Matthew; Rodriguez-Rivera, Jose; Qiu, Yiming; McQueen, Tyrel; Tchernyshyov, Oleg; Broholm, Collin | We report a comprehensive neutron scattering study of low energy magnetic excitations in the breathing pyrochlore helimagnetic Cu2OSeO3. | Session 7: Bulk Chiral Magnets |
| 81 | Stability of skyrmions in Te-doped Cu2OSeO3 | Ulrich, Clemens; Sauceda Flores, Jorge; Rov, Rosanna; Pervez, Firoz; Spasovski, Martin; Vella, J.; Gilbert, Elliot; Yick, Samuel; Seidel, Jan; Soehnel, Tilo | Stability of skyrmions in Te-doped Cu2OSeO3 | Session 7: Bulk Chiral Magnets |
| 82 | Multiferroic Crankshaft in GdMn2O5 | Ponet, Louis; Artyukhin, Sergey; Cheong, Sang-Wook; Pimenov, Andrei | We show that the application and subsequent removal of magnetic field along a particular “magic” angle reverses the electric polarization of the multiferroic GdMn 2O 5, induced by an antiferromagnetic spin ordering. | Session 7: Bulk Chiral Magnets |
| 83 | Structural properties of new chiral-polar magnets | Yang, Junjie; Obeysekera, Dimuthu; Gao, Yunpeng | In this talk, we will discuss our recent neutron scattering results of Mn or Co-substituted Ni 3TeO 6. | Session 7: Bulk Chiral Magnets |
| 84 | Non-Kramers doublet ground state of the triangular-lattice spin-liquid candidate TbInO3 | Ye, Mai; Xu, Xianghan; Wang, Xiangyue; Kim, Jaewook; Cheong, Sang-Wook; Blumberg, Girsh | In particular, we demonstrate that the Tb ions have a non-Kramers doublet ground state, and these doublets from a triangular magnetic lattice. | Session 8: Bulk Complex Oxides: Experiments |
| 85 | Partial melting of the charge order in the mixed-valent homometallic ludwigite Co22+Co3+BO5 | Galdino, Carlos; Medrano, Cynthia; Freitas, Daniele; Azevedo, Gustavo; Pinheiro, Carlos; Continentino, Mucio; Granado, Eduardo | Partial melting of the charge order in the mixed-valent homometallic ludwigite Co22+Co3+BO5 | Session 8: Bulk Complex Oxides: Experiments |
| 86 | Magnetic properties and magnetic structure of the frustrated quasi-one-dimensional antiferromagnet SrCuTe2O6 | Saeaun, Pakornsak; Zhao, Yang; Piyawongwatthana, Pharit; Sato, Taku; Chou, Fangchang; Avdeev, Maxim; Gitgeatpong, Ganatee; Matan, kittiwit | We will present results of magnetization measurements and neutron diffraction measurements to investigate a magnetic structure of the frustrated quasi-one-dimensional antiferromagnet SrCuTe 2O 6. | Session 8: Bulk Complex Oxides: Experiments |
| 87 | Giant and highly anisotropic magnetocaloric effects in single crystals of disordered-perovskite RCr0.5Fe0.5O3 (R= Gd, Er) | Shin, Hyunjun; Kim, Jinseok; Kim, Jonghyuk; Oh, Donggun; Lee, Nara; Choi, Youngjai | We have synthesized disordered-pervoskite RCr 0.5Fe 0.5O 3 (R=Gd, Er) single crystals and investigated the influences of magnetic anisotropy and additional ordering of rare-earth moments on the cryogenic magnetocaloric properties. | Session 8: Bulk Complex Oxides: Experiments |
| 88 | The Origin of Ising Magnetism in Ca3O2O6 Unveiled by Orbital Imaging | Leedahl, Brett; Sundermann, Martin; Amorese, Andrea; Severing, Andrea; Gretarsson, Hlynur; Zhang, Lunyong; Komarek, Alexander; Maignan, Antoine; Haverkort, Maurits; Tjeng, Liu | To resolve the underlying local electronic configuration of the Co ions in this material we applied s-core-level non-resonant inelastic x-ray scattering ( s-NIXS), a new technique that is capable of imaging the shape of the 3 d orbitals in real space. | Session 8: Bulk Complex Oxides: Experiments |
| 89 | A novel low temperature dynamic correlated paramagnet on a randomly diluted lattice | Hossain, Akmal; Kundu, S.; Sivakumar, Pranava; Das, Ranjan; Baenitz, M.; Baker, Peter; Orain, Jean-Christophe; Joshi, D. C.; Mathieu, Roland; Mahadevan, Priya; Pujari, Sumiran; Bhattacharjee, Subhro; Mahajan, Avinash; Das Sarma, Dipankar | Combining the two approaches, we explore a frustrated triangular lattice in presence of an extensive disorder such that the possibility of both spin liquid and spin glass states exist. | Session 8: Bulk Complex Oxides: Experiments |
| 90 | Magnetic Structure Characterization of Spinel Type High Entropy Oxide (MnFeCrCoNi)3O4 | Johnstone, Graham; Hallas, Alannah | Here we presented a detailed structural and magnetic characterization of the spinel (MnFeCrCoNi) 3O 4 with the goal of elucidating the relationship between magnetism and chemical disorder. | Session 8: Bulk Complex Oxides: Experiments |
| 91 | Phase transition and magnetism in Fe-P-O-H based synthetic mineral | Gutmann, Matthias; Poienar, Maria; Stenning, Gavin; Paulmann, Carsten; Tolkiehn, Martin; Svemir, Rudic; Manuel, Pascal; Orlandi, Fabio; Petricek, Vaclav; Pascut, Gheorghe | Phase transition and magnetism in Fe-P-O-H based synthetic mineral | Session 8: Bulk Complex Oxides: Experiments |
| 92 | Role of Oxygen Vacancies in transposing the Electronic Properties of a Nonmagnetic Band Insulator KTaO3 | Gogoi, Sanat; Ojha, Shashank; Patidar, Manju; PATEL, RANJAN; Mandal, Prithwijit; Kumar, Siddharth; Venkatesh, Radhakrishnan; Ganesan, Vedachalaiyer; Middey, Srimanta; Jain, Manish | Role of Oxygen Vacancies in transposing the Electronic Properties of a Nonmagnetic Band Insulator KTaO3 | Session 8: Bulk Complex Oxides: Experiments |
| 93 | Structural and magnetic phases of rare-earth disilicates, R2Si2O7 | Ciomaga Hatnean, Monica; Petrenko, Oleg; Lees, Martin; Balakrishnan, Geetha | Previous studies show that Er 2Si 2O 7 orders antiferromagnetically below T N = 1.9 K, as well as exhibiting a highly anisotropic magnetic behavior, however, the magnetic ground state of this compound is not yet established. | Session 8: Bulk Complex Oxides: Experiments |
| 94 | magnetic structures and excitations in the series of A2PrO3 (A: alkali metals) | tunggiya, mergen; Plumb, Kemp | We study magnetic structures and excitations in the series of A2PrO3 (A: alkali metals) by performing neutron scattering experiments. | Session 8: Bulk Complex Oxides: Experiments |
| 95 | Neutron scattering evidence of spin-liquid behavior in spinel compound CuGa2O4 | Xu, Zhijun; Sapkota, Aashish; Xu, Guangyong; Qiu, Yimin; Stone, Matthew; Gu, Genda; Tranquada, John | We report neutron scattering measurements on a single crystal of CuGa2O4 sample. | Session 8: Bulk Complex Oxides: Experiments |
| 96 | Modification in the local atomic spin configuration drives an insulator to metallic phase transition in disordered double perovskites: the case of Nd2CoFeO6 | Sabino, Fernando; S. de Oliveira, Leonardo; Z. Florio, Daniel; Janotti, Anderson; A. Souza, José; Dalpian, Gustavo | To model the complex structural and magnetic state of this DP, we used a supercell with 80 atoms and the quasi-random structure method to distribute the atoms and the magnetic moment of Co/Fe. | Session 8: Bulk Complex Oxides: Experiments |
| 97 | Highly nonlinear magnetoelectric effect in antiferromagnetic Co4Ta2O9 single crystals | Lee, Nara; Oh, Donggun; Choi, Sungkyun; Moon, Jae; Kim, Jong Hyuk; Shin, Hyunjun; Son, Kwanghyo; Nuss, Jürgen; Kiryukhin, Valery; Choi, Youngjai | We observe a highly nonlinear magnetoelectric effect on single crystals of Co 4Ta 2O 9 (CTO), distinctive from the linear behavior in the isostructural Co 4Nb 2O 9. | Session 8: Bulk Complex Oxides: Experiments |
| 98 | Noncollinear antiferromagnetic order in the buckled honeycomb lattice of magnetoelectric Co4Ta2O9 determined by single-crystal neutron diffraction | Choi, Sungkyun; Oh, Donggun; Gutmann, Matthias; Pan, Shangke; Kim, Gideok; Son, Kwanghyo; Kim, Jae Wook; Lee, Nara; Cheong, Sang-Wook; Choi, Youngjai; Kiryukhin, Valery | Within experimental accuracy, we propose the magnetic moments lying in the ab-plane as a minimal model. | Session 8: Bulk Complex Oxides: Experiments |
| 99 | Extreme tensile strain states in magnetic oxide membranes | Hong, Seung Sae | This highly-tunable strained membrane approach provides a broad opportunity to design and manipulate correlated electron states. | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 100 | Voltage Control of Magnetism Enabled by Resistive Switching | Salev, Pavel; Volvach, Iana; Sasaki, Dayne; Fratino, Lorenzo; Berkoun, Rani; Lapa, Pavel; del Valle, Javier; Kalcheim, Yoav; Rozenberg, Marcelo; Takamura, Yayoi; Lomakin, Vitaliy; Schuller, Ivan | Our work shows that employing resistive switching is a viable strategy to achieve voltage-controlled magnetism. | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 101 | Doping- and Strain-Dependent Electrochemical Control of Magnetism in Ion-Gel-Gated Epitaxial La1-xSrxCoO3-δ Films | CHATURVEDI, VIPUL; Postiglione, William; Yu, Biqiong; Tabis, Wojciech; Hameed, Sajna; Biniskos, Nikolaos; Zhou, Hua; Zhang, Zhan; Greven, Martin; Leighton, Chris | In this work, we provide the first complete doping- and strain-dependent study of the ion-gel-gating-induced P to BM transition over the entire La 1-xSr xCoO 3-δ phase diagram, via transport, magnetometry, and operando synchrotron X-ray diffraction. | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 102 | Giant anisotropic magnetoresistance in oxygen-vacancy-ordered epitaxial La0.5Sr0.5CoO3-δ films | Walter, Jeff; Bose, Shameek; Cabero, Mariona; Varela, Maria; Leighton, Chris | Here we show that V O-ordered epitaxial La 0.5Sr 0.5CoO 3-δ films exhibit not only strong magnetic anisotropy, but also a giant form of anisotropic magnetoresistance (AMR) [1]. | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 103 | Defect engineering of EuTiO3 epitaxial thin films | Shin, Dongwon; Kim, Inseo; Song, Sehwan; Seo, Yu-Seong; Hwang, Jungseek; Park, Sungkyun; Choi, Minseok; Choi, Woo Seok | Defect engineering of EuTiO3 epitaxial thin films | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 104 | Ionically-controlled phase separation in cobaltite heterostructures | Rippy, Geoffery; Trinh, Lacey; Kane, Alexander; Ionin, Aleksey; Lee, Michael; Chopdekar, Rajesh; Christiansen-Salameh, Joyce; Gilbert, Dustin; Grutter, Alexander; Murray, Peyton; Holt, Martin; Cai, Zhonghou; Liu, Kai; Takamura, Yayoi; Kukreja, Roopali | In this talk, I will focus on Gd/La 0.67Sr 0.33CoO 3 (LSCO) heterostructures due to the high oxygen ion conductivity, as well as the coupled magnetic and electronic properties of LSCO, which are strongly dependent on the oxygen stoichiometry. | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 105 | Redox-controlled tunneling electroresistance in NdNiO3/MoSi junctions | Humbert, Vincent; El Hage, Ralph; Krieger, Guillaume; Santamaria, Jacobo; Sander, Anke; Preziosi, Daniele; Villegas, Javier | We find that the studied NdNiO 3/MoSi junctions present large tunnel electroresistance (several orders of magnitude), and that, depending on the temperature, the lifetime of the resistance states can be largely tuned. | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 106 | Tunable electronic and magnetic properties in thin film of Eu1-xLaxTiO3 (0< x <1) | Shin, Hyungki; Liu, Chong; Li, Fengmiao; Sutarto, Ronny; Davidson, Bruce; Zou, Ke | We explore the electronic and magnetic transitions of strained thin film Eu 1-xLa xTiO 3 (0< x <1) grown by oxide molecular beam epitaxy (MBE). | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 107 | Thickness-dependent quantum transport of Weyl fermions in ultrahigh-quality SrRuO3 films | Kaneta-Takada, Shingo; Wakabayashi, Yuki; Krockenberger, Yoshiharu; Ohya, Shinobu; Tanaka, Masaaki; taniyasu, yoshitaka; Yamamoto, Hideki | Thickness-dependent quantum transport of Weyl fermions in ultrahigh-quality SrRuO3 films | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 108 | PLD growth of epitaxial SrRu1-xSnxO3 thin films: Electronic and magnetic phase diagram | Huon, Amanda; Fitzsimmons, Michael; Charlton, Timothy; Lee, Ho Nyung | Here, we present a systematic study on the isovalent substitution in the growth of epitaxial SrRu 1-xSn xO 3 (0 < x < 1) thin films by pulsed laser deposition. | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 109 | Quantum transport of spin polarized electrons in EuTiO3 films grown by gas source MBE | Takahashi, Kei; Maruhashi, Kazuki; Murata, Tomoki; Wang, Q. Y.; Ishizuka, Hiroaki; Bahramy, Mohammad; Shimizu, Sunao; Kurihara, Ryosuke; Miyake, Atsushi; Tokunaga, Masashi; Nagaosa, Naoto; Tokura, Yoshinori; Kawasaki, Masashi | Research on quantum transport in high electron mobility oxides started from such conventional semiconductors as ZnO and SrTiO 3 (STO). | Session 9: Complex Oxide Thin Films: Novel Strain, Voltage, and Quantum Transport Phenomena |
| 110 | Systematic Study of the Hubbard Model in Finite Magnetic Field via Determinant Quantum Monte Carlo | Ding, Jixun; Wang, Wen; Schattner, Yoni; Moritz, Brian; Huang, Edwin; Devereaux, Thomas | We present thermodynamic, magnetic and transport properties of this model, including the local moment, compressibility, density of states, magnetoresistance, and hall conductivity, as a function of doping, temperature and Hubbard interaction strength. | Session 10: Complex Oxides: Theory and Computation |
| 111 | Spin-orbital entangled states in correlated molybdenum oxides | Jackeli, George | We theoretically explore how the spin-orbit coupling could give rise to unusual states of spin-orbital or spin-lattice degrees of freedom depending on the local d-electron counting and the lattice geometry. | Session 10: Complex Oxides: Theory and Computation |
| 112 | Ferromagnetic kinetic exchange interaction in magnetic insulators | Iwahara, Naoya; Huang, Zhishuo; Liu, Dan; Mansikkamäki, Akseli; Vieru, Veacheslav; Chibotaru, Liviu | In this work [1], we show that explicit consideration of magnetic and (leading) bridging orbitals, together with the electron transfer between the former, reveals a strong ferromagnetic kinetic exchange contribution. | Session 10: Complex Oxides: Theory and Computation |
| 113 | Ab initio prediction of quadruple perovskites with half-metallic ferrimagnetism and high Curie temperatures | wang, duo; Shaikh, Monirul; Ghosh, Saurabh; Sanyal, Biplab | Here we investigated a series of QPs using density functional theory and Monte Carlo simulations. | Session 10: Complex Oxides: Theory and Computation |
| 114 | Ab initio prediction of noncollinear, uniform magnetic structures | Huebsch, Marie-Therese; Nomoto, Takuya; Suzuki, Michi-To; Arita, Ryotaro | We present an efficient scheme [1] to circumvent these issues by a combination of the cluster multipole (CMP) theory to create an appropriate list of candidate magnetic configurations and SDFT. | Session 10: Complex Oxides: Theory and Computation |
| 115 | Symmetry breaking in density functional theory captures bulk peculiarities that were assumed to exclusively emerge from electron correlation | Wang, Zhi; Malyi, Oleksandr; Zhao, Xingang; Zunger, Alex | We show how the energy-lowering symmetry breaking effects in mean-field DFT capture mass enhancement [1] in a range of perovskites e.g. d-electron SrVO3, SrTiO3, BaTiO3, LaMnO3 as well as p-electron CsPbI3 and SrBiO3, and local distortions and nematicity in iron-based compound FeSe [2]. | Session 10: Complex Oxides: Theory and Computation |
| 116 | Electronic structure and magnetic properties of hexaferrites: An ab initio study | Bhandari, Churna; Paudyal, Durga | We study the electronic structure, magnetic properties, and magneto-structural transition in Sr/La hexaferrites using advanced density functional methods. | Session 10: Complex Oxides: Theory and Computation |
| 117 | False metals and real insulators | Malyi, Oleksandr; Zunger, Alex | We show that the intricate coupling of electronic, spin and lattice degrees of freedom afforded by symmetry broken mean-field theories such as DFT (rather than strong or dynamic correlation) correctly predicts the appropriate insulating or metallic state in a range of compounds. | Session 10: Complex Oxides: Theory and Computation |
| 118 | Phonon-induced antiferromagnetism in two dimensions | Cai, Xun; Li, Zixiang; Yao, Hong | Here, by employing numerically-exact sign-problem-free quantum Monte Carlo (QMC) simulations, we obtain convincing evidences that Su-Schrieffer-Heeger (SSH) phonons can induce Neel AF ordering on the square lattice for a wide range of phonon frequencies. | Session 10: Complex Oxides: Theory and Computation |
| 119 | Computational design of layered-oxide materials | Acharya, Shree Ram; Ferreira, Timothy; Sefat, Athena; Cooper, Valentino | We present the feasibility of creating layered ABO 2 structures from ABO 3 ( A=Ca, La, Sr, Li, Na, Nd, Pr, Y; B=Fe, Mn, Mo, V, Ni, Ru) perovskites. | Session 10: Complex Oxides: Theory and Computation |
| 120 | Nonlinear spin and orbital susceptibilities of a Mott insulator | Addison, Zachariah; Roy, Sayantan; Trivedi, Nandini | We investigate the coupling of electromagnetic fields to electrons on a lattice with strong on-site Hubbard interactions and calculate the spin and orbital nonlinear electric field susceptibilities. | Session 10: Complex Oxides: Theory and Computation |
| 121 | S-shaped configurational magnetic states in square permalloy particles | Costanzi, Barry; Cho, Anthony; Dairaghi, Gregor; Weeden, Spencer; Palenova, Daria | We experimentally observe both U- and S-shaped zero-field magnetic configurations in single square permalloy dots, with a given dot’s configuration dependent on field history and temperature. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 122 | A new view on the origin of zero-bias anomalies of Co atoms atop noble metal surfaces | Bouaziz, Juba; Guimaraes, Filipe; Lounis, Samir | In this talk, we address systematically zero-bias anomalies detected by scanning tunneling spectroscopy on Co atoms deposited on Cu, Ag and Au(111) substrates, which remarkably are almost identical to those obtained from first-principles [1]. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 123 | Single-atom electron paramagnetic resonance in a scanning tunneling microscope driven by a radiofrequency antenna at 4 K | Kovarik, Stepan; Seifert, Tom; Juraschek, Dominik; Spaldin, Nicola; Stepanow, Sebastian; Gambardella, Pietro | Here, we present a coupling efficiency of the order of unity by using a radiofrequency (RF) antenna placed parallel to the STM tip [2]. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 124 | Longitudinal and transverse electron paramagnetic resonance in a scanning tunneling microscope | Seifert, Tom; Kovarik, Stepan; Juraschek, Dominik; Spaldin, Nicola; Gambardella, Pietro; Stepanow, Sebastian | Based on density functional theory and atomic-multiplet calculations, we reveal different driving mechanisms for single Fe and hydrogenated Ti atoms on the surface. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 125 | Control of Magnetism by Oxygen Adsorption in Magnetic Sponge Materials | Kato, Masaki; Udagawa, Masafumi; Matsuura, Hiroyasu; Tokushuku, Kunio; Ogata, Masao | In this contribution, we focus on the antiferromagnetic interaction between the adsorbed oxygen (O) molecules and TCNQ complex and construct an effective spin model with temperature-dependent magnetic interactions by integrating out the O degrees of freedom. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 126 | Controlled chemical vapor deposition of a molecular magnet, vanadium tetracyanoethylene | Bola, Jaspal; Liu, Haoliang; Stolley, Ryan; Popli, Henna; Malissa, Hans; Boehme, Christoph; Vardeny, Valy; Miller, Joel | We report the controlled chemical vapor deposition method of an organic-based magnet, vanadium tetracyanoethylene (V[TCNE] x, x≈2) [1,2]. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 127 | Structural and Magnetic Properties of Manganese Phthalocyanine Thin Films | Gredig, Thomas; Nguyen, Anh; Slavin, Stuart | Several 3d transition metal phthalocyanine thin films have been studied with the aim to tune their magnetic properties based on the metal-ion’s strong inter-chain interactions. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 128 | Perpendicular magnetic anisotropy in half-metallic thin-film Co2CrAl | Carlile, Ryan; Herran, Juliana; Poddar, Shashi; Montgomery, Eric; Kharel, Parashu; Shand, Paul; Lukashev, Pavel | Here, we employ first-principles calculations to study MCA in thin film full Heusler alloy Co 2CrAl. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 129 | Atomic-scale characterization of few-layer CrSe | Dreher, Paul; Wan, Wen; Ilyn, Max; Herrero-Martín, Javier; Gargiani, Pierluigi; Gobbi, Marco; Blanco-Canosa, Santiago; Ugeda, Miguel | Here we focus on non-layered CrSe in the NiAs-type structure, a material whose electronic and magnetic ground state in the thin-film regime remains controversial( 1– 3). | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 130 | Angle-resolved photoemission spectroscopy study of the electronic structure of Cr5Te8 | Chen, Xiaoyang; Song, Yuanhe; WANG, XIAOXIAO; Wang, Hongyuan; Xu, Haichao; Peng, Rui; Guo, Yanfeng; Feng, Donglai | Here we report angle-resolved photoemission spectroscopy study of the electronic structure of Cr 5Te 8. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 131 | Atomically-thin Cr2Te3 ferromagnet – a 2D half-metal | Bian, Mengying; Kamenskii, Aleksandr N. Kamenskii; Han, Mengjiao; Li, Wenjie; Wei, Sichen; Tian, xuezeng; Eason, David; Sun, Fan; he, keke; Hui, Haolei; Yao, Fei; Sabirianov, Renat; Bird, Jonathan; Yang, Chunlei; Miao, Jianwei; Lin, Junhao; Crooker, Scott; Hou, Yanglong; Zeng, Hao | In this work, the non-vdW 2D magnetic Cr 2Te 3 with a thickness down to one-unit-cell was synthesized by chemical vapor deposition. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 132 | Magnetic Anisotropy Engineered via Band Distortion in Two-dimensional Materials | YIN, LI; Parker, David | Here, through first-principles calculations, we report the connection between magnetic anisotropy and band structures in Γ-specialized In 2Se 3/Fe 3GeTe 2 heterostructure, where band distortion occurs in the surrounding of Γ point with a formed valley. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 133 | Robust ferromagnetism in wafer-scale monolayer and multilayer Fe3GeTe2 | Roemer, Ryan; Liu, Chong; Shin, Hyungki; Zou, Ke | We achieve, by molecular beam epitaxy, the synthesis of high-quality monolayer and multilayer FGT films. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 134 | Increased muon field at surface and substrate interface of a palladium thin film | Welker, Gesa; De Wit, Martin; Benschop, Tjerk; Mydosh, John; Prokscha, Thomas; Bossoni, Lucia | We performed depth-dependent low-energy muon spin spectroscopy (MuSR) studies on three undoped and iron-doped Pd 100 nm thin films. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 135 | Nanoparticles-decorated 2D transition metal dichalcogenides with room-temperature ferromagnetic response. | Kapuruge, Nalaka; Kalappattil, Vijaysankar; Nugera, Florence; Jimenez, Valery; Phan, Manh-Huong; Gutierrez, Humberto | In this work, we propose an alternative approach that consists in decorating 2D TMD materials with nanoparticles of manganese oxide. | Session 11: Controlling Magnetic States in Thin Films and on Surfaces |
| 136 | Phonon Hall Viscosity and Berry Phase in Magnetic Insulators | Ye, Mengxing; Balents, Leon | We present a systematic procedure to obtain the phonon Hall viscosity induced by phonon-magnon interaction in magnetic insulators under an external magnetic field. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 137 | Cavity Probes and Control of Antiferromagnetic Fluctuations in a Mott Insulator | Curtis, Jonathan; Grankin, Andrey; Poniatowski, Nicholas; Narang, Prineha; Galitski, Victor; Demler, Eugene | We present a mechanism for coupling the electromagnetic field of a THz cavity to the antiferromagnetic order in a simplified model of an undoped cuprate Mott insulator. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 138 | Ultrafast magnetic dynamics in insulating YBa2Cu3O6.1 revealed by time resolved two-magnon Raman scattering | Reznik, Dmitry; Yang, Jhih-An; Pellatz, Nick; Wang, Thomas; Nandkishore, Rahul | Here, we introduce time-resolved two-magnon Raman scattering as a real time probe of magnetic correlations especially well-suited for antiferromagnets. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 139 | Unveiling the Normal State of Cuprates with Charge and Spin Orders | Popovic, Dragana | Time permitting, this talk will describe the main results of the comprehensive series of experiments [1-4] performed using several complementary electrical transport techniques on underdoped La-214 cuprates in which charge and spin orders appear in the form of stripes near x~1/8 doping. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 140 | Super Van Hove singularities in cuprate high-Tc superconductors | Markiewicz, Robert; Singh, Bahadur; Lane, Christopher; Bansil, Arun | [1] Here we discuss the existence of high-order VHSs in the cuprate high- Tc superconductors and show how these VHSs are the result of the effective electronic dimensionality of the material being smaller than the dimensionality of the crystal lattice. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 141 | An ab initio Study of Oxygen Vacancies in Ba2CuO4-δ | Matzelle, Matthew; Lane, Christopher; He, Ruihua; Markiewicz, Robert; Bansil, Arun | Using state-of-the-art ab initio techniques, we systematically examine the energy landscape and electronic structure of oxygen vacancies in Ba 2CuO 4-δ. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 142 | A large modulation of electron-phonon coupling and an emergent superconducting dome in doped strong ferroelectrics | Ma, Jiaji; Yang, Ruihan; Chen, Hanghui | We use first-principles methods to study doped strong ferroelectrics (taking BaTiO 3 as a prototype). | Session 12: Correlated Electrons in Cuprates and Titanates |
| 143 | The Pockels Response in Low-Temperature Rhombohedral BaTiO3 | Paoletta, Therese; Demkov, Alexander | In this talk, we report a first principles analysis built on density functional perturbation theory, exploring the origins of a strong Pockels response by examining the components that make up the ionic contribution to the electro-optic tensor. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 144 | First-principles and Group-theoretical Analysis of the Magnetic Order in the Rare Earth Titanates | Gautreau, Dominique; Wang, Zhentao; Fernandes, Rafael; Birol, Turan | We present a combined first-principles, group theoretical, and phenomenological analysis to elucidate the nature of the magnetic phases in strained (biaxial and uniaxial) and doped compounds. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 145 | Influence of structural distortions on the magnetic order of rare-earth titanates | Najev, Ana; Pelc, Damjan; Hameed, Sajna; Gautreau, Dominique; Joe, Joseph; Wang, Zhentao; Pozek, Miroslav; Birol, Turan; Fernandes, Rafael; Greven, Martin | We compare the results to ab initio calculations and discuss implications for the nature of the ground state and magnetic transitions in these systems. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 146 | The effect of electronically-induced lattice distortions on the structural distortions in layered lanthanum cuprates. | Keegan, Christopher; Senn, Mark; Bristowe, Nicholas; Mostofi, Arash | In this work we use density-functional theory calculations to understand the extent to which structural distortions arising from the Jahn-Teller effect induce a symmetry-breaking distortion in the Ba-doped system but not in the Sr-doped system. | Session 12: Correlated Electrons in Cuprates and Titanates |
| 147 | Emergent Behavior in Ni1+-Rich Layered Nickelates | Mitchell, John | We present an expanded phase diagram of the reduced, layered nickelates and suggest ways in which these materials might be made superconductors. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 148 | Intertwined Density Waves in a Metallic Nickelate | Zhang, Junjie; Phelan, Daniel; Zheng, Hong; Rosenkranz, Stephan; Osborn, Raymond; Botana, Antia; Qiu, Yiming; Krogstad, Matthew; Chen, Yu-sheng; Rodriguez-Rivera, Jose; Wang, Suyin; Norman, Michael; Mitchell, John | Here, we demonstrate that this transition results from an incommensurate density wave with both charge and magnetic character that lies closer in its behavior to the metallic density wave seen in chromium metal than the insulating stripes typically found in single-layer nickelates like La 2-xSr xNiO 4. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 149 | Low spin configuration and giant orbital polarization of Ni2+ in square planar environment | Mandal, Prithwijit; PATEL, RANJAN; Rout, Dibyata; Banerjee, Rajdeep; Bag, Rabindranath; karmakar, koushik; Narayan, Awadhesh; Freeland, John; Singh, Surjeet; Middey, Srimanta | To understand this, we have investigated the electronic and magnetic structure of Sr 2CuO 3 and Sr 2Cu 0.9Ni 0.1O 3. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 150 | Epitaxial strain on nickelate RNiO3 thin films (R = Nd1-xSrx, La1-xNdx) | Ponti, Gregorio; Tebo, Jonathan D.; Barajas, Alexander; Markert, John | We report x-ray diffraction and resistivity measurements on strained nickelate thin films. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 151 | Electronic-structural interplay in correlated materials with site- and orbital- selective Mott states: an embedded dynamical mean field theory perspective | Pascut, Gheorghe; Coulter, Jennifer; Chandra, Premala; Rabe, Karin; Haule, Kristjan | In this talk we will discuss about the predictive powers of the DFT+eDMFT for the electronic-structural interplay for novel electronic states of matter in the materials mentioned above, where (I) Mott and metallic orbitals coexist (orbital-selective Mott state), (II) Mott, metallic and semi-metallic orbitals coexist (site-orbital-selective Mott state) and (III) Mott and band orbitals coexist (site-orbital-selective Mott state). | Session 13: Correlated Electrons in Nickelates and Manganites |
| 152 | Unusual effects of magnetic dilution in the ferrimagnetic columnar ordered Sm2MnMnMn4–xTixO12 perovskites | Vibhakar, Anuradha; Khalyavin, Dmitry; Manuel, Pascal; Liu, Ran; Yamaura, Kazunari; Belik, Alexei; Johnson, Roger | We show that in all three compositions the Mn ions adopt a collinear ferrimagnetic structure below 27 K, 62 K and 34 K, respectively. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 153 | Understanding the metal-to-insulator transition in La1-xSrxCoO3−δ and its applications for neuromorphic computing | Zhang, Shenli; Galli, Giulia | We show that, contrary to accepted views, cooperative structural distortions instead of local bonding changes are responsible for the MIT, and we describe the subtle interdependence of structural and magnetic transitions. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 154 | Magnetism and Transport in Novel High-Pressure Phases of Iron-Oxides | Khanal, Ghanashyam; Vasiukov, Denis; Haule, Kristjan | We study a number of compounds from the homologous series (nFeO mFe$_2$O$_3$) using Density Functional Theory (DFT) + embedded Dynamical Mean-Field Theory (eDMFT) functional method to understand the electronic structure, magnetic and transport properties. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 155 | Properties of La0.7Ca0.3MnO3 under extreme tensile strength studied using Monte Carlo simulations | Sen, Cengiz; Dagotto, Elbio | Here we reproduce the results of the experiments using Monte Carlo simulations of the two-orbital double-exchange model including Jahn-Teller distortions, at hole density x=1/3. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 156 | CaMn2O4-d a possible multiferroic candidate, an annealing study | Gooch, Melissa; Wu, Hung-Cheng; Deng, Liangzi; Yang, Hung-Duen; Chu, Ching | CaMn2O4-d a possible multiferroic candidate, an annealing study | Session 13: Correlated Electrons in Nickelates and Manganites |
| 157 | Magnetic structure of perovskite-derived LaNiO3-δ nickelate with ordered oxygen vacancies | Shin, Yongjin; Rondinelli, James | We find square planar NiO 4 units formed by ordered oxygen vacancies are electronically and magnetically inactive, which along with changes in the NiO 6 connectivity, govern the phase transitions. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 158 | Ultrafast spin-nematic and ferroelectric phase transitions in a photo-induced charge and orbital ordered manganite | Rajpurohit, Sangeeta; Tan, Liang; Blöechl, P. E. | We propose a mechanism for the optical excitation of a non-collinear antiferromagnet leading selectively to new spin orders beyond a critical light-intensity. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 159 | The Role of Phonons and Defects in the Recently Discovered Non-Cubicity of SrVO3 | Berry, Tanya; Fry-Petit, Allyson; Sinha, Mekhola; Zhang, Qiang; Auffermann, Gudrun; McQueen, Tyrel; Rudin, Sven; Phelan, William | Motivated by reports of imaginary phonon modes in DFT calculations of cubic SrVO 3 and employing high quality neutron scattering data, we indeed find that the neutron diffraction and corresponding pair distribution function of SrVO 3 over a range of temperatures are better modeled to lower symmetry structures. | Session 13: Correlated Electrons in Nickelates and Manganites |
| 160 | Coulomb-Engineered Magnetism in CrI3 Monolayers | Soriano, David; Rudenko, Alexander; Katsnelson, Mikhail; Roesner, Malte | At the same time we can externally modify this interaction by means of dielectric substrates or dielectric coating. | Session 14: Dimensional Effects in Magnetic Ordering |
| 161 | Orbital Antiferromagnetic Order and Magnetoelectricity in Quasi-2D Paramagnets, Ferromagnets and Antiferromagnets | Winkler, Roland; Zuelicke, Ulrich | We present a comprehensive theory [1] for magnetoelectricity in magnetically ordered quasi-2D systems. | Session 14: Dimensional Effects in Magnetic Ordering |
| 162 | Wrinkle formation and its effect on the magnetic properties of Cr2Ge2Te6/NiO heterostructures | Llacsahuanga Allcca, Andres; Idzuchi, Hiroshi; Pan, Xing Chen; Tanigaki, Katsumi; Chen, Yong | We performed magneto optic Kerr effect and Raman microscopy measurements on thin Cr 2Ge 2Te 6 (CGT) flakes covered by NiO. | Session 14: Dimensional Effects in Magnetic Ordering |
| 163 | Understanding the non-collinear antiferromagnetic IrMn3 surfaces and their exchange-biased heterostructures from first principles | Maldonado-Lopez, Daniel; Takeuchi, Noboru; Guerrero Sanchez, Jonathan | We provide a complete and systematic first-principles study on the thermodynamic stability, structural parameters, and magnetic properties of the T1 non-collinear antiferromagnetic L1 2-IrMn 3 surface and exchange-biased L1 2-IrMn 3/Fe heterostructure. | Session 14: Dimensional Effects in Magnetic Ordering |
| 164 | Thickness-dependent magnetic order and phase transition in V5S8 | Zhang, Jie; Zhang, Ruizi; Zhang, Yu-Yang; Du, Shixuan | We find that the origin of the magnetic ordering is from super-exchange interaction. | Session 14: Dimensional Effects in Magnetic Ordering |
| 165 | Measuring Quantum Entanglement in Spin Chain KCuF3 using Neutron Scattering | Scheie, Allen; Laurell, Pontus; Samarakoon, Anjana; Lake, Bella; Nagler, Stephen; Okamoto, Satoshi; Alvarez, Gonzalo; Tennant, David | We use neutron scattering to directly witness entanglement between quantum spins in the 1D Heisenberg antiferromagnet KCuF 3. | Session 14: Dimensional Effects in Magnetic Ordering |
| 166 | Finite temperature magnon dynamics and interactions in a spin-1 chain | Sharma, Prakash; Lee, Kyungmin; Changlani, Hitesh | Attraction stabilizes composite bound states of magnons, and we propose ways of detecting them in future experiments. | Session 14: Dimensional Effects in Magnetic Ordering |
| 167 | Hydrodynamics experiments with ferromagnetic liquid droplets | Streubel, Robert; Wu, Xuefei; Liu, Xubo; Kim, Paul; Yu, Chai; Hu, Qin; Wang, Dong; Fischer, Peter; Russell, Thomas | We use hydrodynamics experiments to probe how the magnetization of ferromagnetic liquid droplets, governed by the assembly and jamming of magnetic nanoparticles at liquid-liquid interfaces, and their response to external stimuli can be tuned by chemical, structural and magnetic means. | Session 14: Dimensional Effects in Magnetic Ordering |
| 168 | Ferromagnetism and sign-tunable anomalous hall effect in PdCoO2 via hydrogenation | Rimal, Gaurab; Liu, Yiting; Schmidt, Caleb; Hijazi, Hussein; Skoropata, Elizabeth; Lapano, Jason; Mukherjee, Debangshu; Unocic, Raymond; Chisholm, Matthew; Sun, Yifei; Brahlek, Matthew; Feldman, Leonard; Ramanathan, Shriram; Oh, Seongshik | This work shows that it is possible to introduce changes to the magnetic and electronic properties of delafossites via hydrogenation. | Session 14: Dimensional Effects in Magnetic Ordering |
| 169 | Scanning SQUID Imaging of Epitaxial Semiconductor-Magnetic Insulator Heterostructures | Zhang, Irene; Nandi, Nabhanila; Liu, Yu; Krogstrup, Peter; Marcus, Charles; Moler, Kathryn | We use scanning SQUID microscopy (SSM) to study 2D heterostructures of thin film EuS, a magnetic insulator, on InAs and InSb substrates. | Session 14: Dimensional Effects in Magnetic Ordering |
| 170 | Magnetic field dependent study of transition metal dichalcogenides via time integrated four wave mixing spectroscopy | Mapara, Varun; Barua, Arup; Liu, Fang; Trinh, Tuan; Zhu, Xiaoyang; Karaiskaj, Denis | Magnetic field dependent study of transition metal dichalcogenides via time integrated four wave mixing spectroscopy | Session 14: Dimensional Effects in Magnetic Ordering |
| 171 | Curvature-induced effects in magnetic nanosystems | Volkov, Oleksii; Sheka, Denis; Kravchuk, Volodymyr; Roessler, Ulrich; Fassbender, Juergen; Makarov, Dennis | These concept allows us to propose a novel approach towards artificial ME materials, whose magnetic states could be controled through small geometrical changes of curvature and torsion [4]. | Session 14: Dimensional Effects in Magnetic Ordering |
| 172 | Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd2As2 | Shi, Ming | Here, using photoemission spectroscopy, we observe that the degeneracy of Bloch bands is already lifted in the paramagnetic phase of EuCd 2As 2. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 173 | Topological Nodal Planes in Magnetic Space Groups | Hirschmann, Moritz; Alpin, Kirill; Wilde, Marc; Dodenhöft, Matthias; Niedermayr, Arthur; Bauer, Andreas; Pfleiderer, Christian; Schnyder, Andreas | In the present work we discuss an extension to two-dimensional nodal features. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 174 | Tunable Berry Curvature Effects Through Volume-wise Magnetic Competition in a Topological Kagome Magnet Co3Sn2S2 | Guguchia, Zurab; Verezhak, Joel; Gawryluk, Dariusz; Tsirkin, Stepan; Yin, Jiaxin; Belopolski, Ilya; Zhou, Huibin; Simutis, Gediminas; Zhang, Songtian; Cochran, Tyler; Chang, Guoqing; Pomjakushina, Ekaterina; Keller, Lukas; Skrzeczkowska, Zuzanna; Wang, Qi; Lei, Hechang; Khasanov, Rustem; Amato, Alex; Jia, Shuang; Neupert, Titus; Luetkens, Hubertus; Hasan, Zahid | Using muon spin-rotation, we present evidence for competing magnetic orders in the kagome lattice of this compound. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 175 | Understanding chemical bonding in adatom configurations on the surface of the magnetic Weyl semi-metal Co3Sn2S2 with machine learning, 3D scanning tunneling spectroscopy, and first-principles calculations | Roccapriore, Kevin; Zou, Qiang; Xue, Rui; Ziatdinov, Maxim; Fu, Mingming; Mandrus, David; Yoon, Mina; Sumpter, Bobby; Gai, Zheng; Kalinin, Sergei | Here we develop a machine learning workflow that combines supervised learning in the spatial domain and unsupervised learning in the energy domain that, with direct comparison to first-principles calculations performed in-tandem, allows an enhanced understanding of the elemental composition and chemical bonding nature of the adatoms and their configurations. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 176 | The magnetic order, tunable spin-canting, and band structure of a candidate Weyl semi-metal | Taddei, Keith; Sanjeewa, Duminda; YIN, LI; Xing, Jie; Dela Cruz, Clarina; Sefat, Athena; Parker, David | In this talk we will discuss the study of one such candidate material, elucidate its magnetic structure, provide a possible mechanism to optimize that structure for the Weyl physics and reveal how the magnetic symmetry tunes the electronic band structure. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 177 | The effects of strain on the topology of EuCd2As2 | Valadkhani, Adrian; Song, Young-Joon; Valenti, Roser | By the analysis with a low-energy effective Hamiltonian, we calculate the topological properties as a function of strain. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 178 | Large Anamolous Hall Effect in New Weyl Semimetal Kagome System: Fe3Sn | Ghimire, Madhav; Belbase, Bishnu; Karki, Bishnu; Ye, Linda; You, Jhih-Shih; Facio, Jorge; Checkelsky, Joseph; Richter, Manuel; Van den Brink, Jeroen | Here, by means of density functional theory calculations, we have investigated the electronic, magnetic and topological properties of layered kagome metal Fe 3Sn. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 179 | Observation of Weyl fermions in a magnetic non-centrosymmetric crystal | Sanchez, Daniel; Chang, Guoqing; Belopolski, Ilya; Lu, Hong; Yin, Jiaxin; Alidoust, Nasser; Xu, Xitong; Cochran, Tyler; Zhang, Xiao; Bian, Yi; Zhang, Songtian; Liu, Yi-Yuan; Ma, Jie; Bian, Guang; Lin, Hsin; Xu, Suyang; Jia, Shuang; Hasan, Zahid | Here we report on the topological electronic properties in the non-centrosymmetric spin-orbit magnet PrAlGe by combining spectroscopy and transport measurements. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 180 | Defects in magnetic Weyl semimetal Co3Sn2S2 | Gai, Zheng; Zou, Qiang; Fu, Mingming; Yoon, Mina; Xue, Rui; Yan, Jiaqiang; Mandrus, David | In this presentation, we use low temperature high magnetic field scanning tunneling microscope, spin polarized STM, and quasiparticle interference (QPI) to study the influence of local defects to the Weyl nodes movement, including magnetic and nonmagnetic vacancies and adatoms. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 181 | Transport and Magnetism in Topological Materials | Checkelsky, Joseph | Here we describe our recent efforts to realize quantum materials in which this interplay manifests itself and discuss concepts of quantum material design that may allow for further exotica to be realized. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 182 | Exploring spin-canting in the Dirac semimetal, Ca1-xNaxMnBi2, with neutron diffraction measurements. | Sapkota, Aashish; Zaliznyak, Igor; Tranquada, John; Petrovic, Cedomir; Xu, Zhijun; Xu, Guangyong; Li, Yangmu | To understand whether the spin-canting is behind the anomalous resistivity bump, we performed neutron diffraction measurements on two members of Ca 1-xNa xMnBi 2, x = 0 and 0.05. | Session 15: Dirac and Weyl Semimetals: Materials and Modeling–Magnetic Weyl Semimetals |
| 183 | Effect of exchange-bond randomization in a highly two-dimensional quantum Heisenberg antiferromagnet | Goddard, Paul; Xiao, Fan; Blackmore, William; Huddart, Benjamin; Gomišek, Matjaz; Hicken, Thomas; Baines, Chris; Baker, Peter; Pratt, Francis; Blundell, Stephen; Lu, Helen; Singleton, John; Gawryluk, Dariusz; Turnbull, Mark; Krämer, Karl; Lancaster, Tom | We present an investigation of the effect of randomizing exchange coupling strengths in the S = 1/2 square lattice quasi-two-dimensional quantum Heisenberg antiferromagnet (QHAF) (QuinH) 2Cu(Cl xBr 1−x) 4●2H 2O (QuinH = Quinolinium, C 9H 8N +), with 0 ≤ x ≤ 1. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 184 | Phase Boundary of Diluted Hexaferrites Near the Magnetic Percolation Transition | Khairnar, Gaurav; Lerch, Cameron; Vojta, Thomas | To explain this behavior we employ a classical percolation scenario. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 185 | Demonstrating the Affleck-Kennedy-Lieb-Tasaki spectral gap on 2D degree-3 lattices | Wei, Tzu-Chieh; Pomata, Nicholas | We report results on solving a long outstanding problem—whether the two-dimensional spin-3/2 antiferromagnetic valence-bond model of Affleck, Kennedy, Lieb, and Tasaki (AKLT) possesses a nonzero gap above its ground state. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 186 | The AKLT models on the singly decorated diamond lattice and two degree-4 planar lattices are gapped | Guo, Wenhan; Pomata, Nicholas; Wei, Tzu-Chieh | Here we report on a non-trivial 3D AKLT model which consists of spin-2 entities on the diamond lattice sites and one single spin-1 entity between every neighboring spin-2 site. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 187 | Structural, magnetic and electron-transport properties of Ti2MnAl Heusler alloys | Lehmann, Zachary; Waybright, Jace; Dahal, Bishnu; Huh, Yung; Shand, Paul; Lukashev, Pavel; Kharel, Parashu | Structural, magnetic and electron-transport properties of Ti2MnAl Heusler alloys | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 188 | Quenching of magnetic moments due to defect states hybridization in V doped WS2 | Zheng, Boyang; Wang, Yuanxi; Crespi, Vincent | Quenching of magnetic moments due to defect states hybridization in V doped WS2 | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 189 | Effect of Doping on the Physical Properties of La5Co2Ge3 | Das, Atreyee; Saunders, Scott; Gati, Elena; Slade, Tyler; Budko, Sergey; Canfield, Paul | In order to better understand the nature and possible tunability of this ferromagnetic transition, we report the substitution of Co with Ni, Fe and Rh as well as Ge with Si. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 190 | Thermodynamic and Transport Properties of RCuAs2 Single Crystals (R = Y, La-Nd, Sm, Gd-Yb) | Evans, David; Mun, Eundeok | In this talk we will present physical property measurements for this family and discuss the possible origin of the resistivity minimum by considering the Kondo and RKKY interactions. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 191 | Colossal Magnetoresistance in a Layered Phosphide EuCd2P2 | Wang, Zhi-Cheng; Rogers, Jared; Yao, Xiaohan; Nichols, Renee; Atay, Kemal; Ryan, Philip; Tafti, Fazel | Here we show an enormous CMR at low temperatures in EuCd 2P 2 without manganese, oxygen, mixed valence, or cubic perovskite structure. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 192 | Disorder and Itinerant Magnetism in Full Heusler Pd2TiIn | Qin, Guanhua; Ren, Wei; Singh, David | We use general potential linearized augmented planewave method to reexamine this issue using all electron, relativistic calculations, without shape or frozen core approximations. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 193 | Magnetic Correlations Close to Quantum Critical Point in the Disordered Ferromagnetic Alloys Ni-V Observed with SANS | Adawi, Hind; Bhattarai, Shiva; Gebretsadik, Adane; Lussier, Jean Guy; Schroeder, Almut; Krycka, Kathryn | We present a small-angle neutron scattering (SANS) analysis of the ferromagnetic (FM) alloys Ni 1-xV x where the FM order is destroyed towards a paramagnetic phase by sufficient substitution of Ni by V. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 194 | First-Principles calculations of disorder in Mn-Sb-Te systems | ghosh, Swarnava; Eisenbach, Markus | We present first principles calculations of Mn-Sb-Te using the Locally-Self consistent Multiple Scattering (LSMS) framework, a real space first principles code for scalable first principles density functional theory calculations of materials. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 195 | Influence of mixing the low-valent transition metal atoms Y = Sc, Ti, V, Cr, Mn and Fe on the properties of possible half-metallic Heusler compounds Co1.5Y0.5FeSi | Mahat, Rabin; KC, Shambhu; Karki, Upama; Regmi, Sudhir; Law, JiaYan; Franco, Victorino; Galanakis, Iosif; Gupta, Arunava; LeClair, Patrick | Here, we present a combined experimental and theoretical study of quaternary Heusler alloys Co 1.5Y 0.5FeSi (Y = Sc,Ti,V,Cr,Mn,&Fe) to get a global overview of the electronic, magnetic and mechanical properties. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 196 | Localized Spin-wave Edge Modes in a Tapered V[TCNE]x~2 Thin-film | Hu, Kwangyul; Flatté, Michael | In this presentation, we investigate and report characteristics of dipole interaction induced spin-wave modes in a thin-film of a trapezoidal cross-section. | Session 16: Disordered and Novel Low Dimensional Magnetic Materials |
| 197 | Chiral coupling-induced asymmetric domain wall motion | Liu, Zhentao; Luo, Zhaochu; Dao, Trong Phuong; Heyderman, Laura; Gambardella, Pietro; Hrabec, Aleš | This establishes a versatile method to characterize the chiral coupling in different materials. | Session 17: Domain Walls |
| 198 | Dielectric loss due to soft domain-wall localized electromagnons in cycloidal magnets | Foggetti, Francesco; Artyukhin, Sergey | We use a quasi-1D model Hamiltonian with competing Heisenberg exchange interactions, leading to a spin spiral, and Dzyaloshinskii-Moriya interactions, responsible for magneto-electric coupling. | Session 17: Domain Walls |
| 199 | Anomalous Chiral Exchange Drag in Synthetic Antiferromagnets | Yang, See-Hun | In this talk, I will discuss a new method for delivering spin angular momentum remotely to magnetic entities showing analogues with massive Dirac fermions. | Session 17: Domain Walls |
| 200 | Nonlinear soliton confinement in weakly coupled antiferromagnetic spin chains | Lane, Harry; Stock, Chris; Cheong, Sang-Wook; Demmel, Franz; Ewings, Russell; Kruger, Frank | Using a path integral approach [1], we show that the movement of domain walls in an anisotropic large-spin antiferromagnetic chain can be described by solitons. | Session 17: Domain Walls |
| 201 | Nonlinear Optical Studies of Neel Order and Spin Domains in Antiferromagnetic MnN | Lee, Joongwon; Zhang, Zexuan; Jena, Debdeep; Rana, Farhan | In this work, we use optical second harmonic generation to study the Neel order and spin domains in single-crystal epitaxially-grown MnN. | Session 17: Domain Walls |
| 202 | Magnetic Domain Wall Leaky Integrate-and-Fire Neurons with Shape-Based Configurable Activation Functions | Brigner, Wesley; Hassan, Naimul; Hu, Xuan; Bennett, Christopher; Garcia-Sanchez, Felipe; Marinella, Matthew; Incorvia, Jean Anne; Friedman, Joseph | In this work, we will discuss the implementation of linear and sigmoidal leaking characteristics. | Session 17: Domain Walls |
| 203 | Dynamics of Muliferroic Domain Wall in an External Field | Kawahara, Koji; Tsunetsugu, Hirokazu | We have studied the dynamics of composite DW in GdFeO 3 driven by either magnetic or electric field based on the time-dependent Ginzburg-Landau equations [2]. | Session 17: Domain Walls |
| 204 | Annihilation and control of chiral domain walls with magnetic fields | Karna, Sunil; Marshall, M.; Xie, Weiwei; DeBeer-Schmitt, Lisa; Young, David; Vekhter, I; Shelton, W; Kovács, A.; Charilaou, Michalis; DiTusa, John | Here we present, the first evidence for soliton/soliton and soliton/antisoliton DW in a thin lamella of the hexagonal chiral magnet Mn 1/3NbS 2 that respond asymmetrically to small magnetic fields and exhibit pair-annihilation. | Session 17: Domain Walls |
| 205 | Control of domain wall patterning and anomalous response functions in ferrimagnetic spinels | Kish, Lazar; Thaler, Alexander; Lee, Minseong; Frith, Matthew; Wolin, Brian; Wang, Xu; Zakrzewski, Alexander; Frontzek, Matthias; Littrell, Ken; Budakian, Raffi; Zhou, Haidong; Zapf, Vivien; Aczel, Adam; DeBeer-Schmitt, Lisa; MacDougall, Greg | In this talk, we present new small angle neutron scattering and bulk data on single crystalline MnV2O4 which allow us to directly correlate anomalous inverse magnetoelastic and magnetocapacitance effects with the onset and field response of these mesoscale features. | Session 17: Domain Walls |
| 206 | Magnetic Domain Dynamics in an Insulating Ferromagnet | Tang, Christopher; Silevitch, Daniel; Dahmen, Karin; Rosenbaum, Thomas | Following the approach derived from the ABBM model, we examine the average scaled shape of Barkhausen events and test for drag effects by characterizing the skewness. | Session 17: Domain Walls |
| 207 | Strain Controlled Domain Wall Synapse with Quantized Weights in the Presence of Thermal Noise and Edge Roughness | Misba, Walid Al; Kaisar, Tahmid; Lozano, Mark; Querlioz, Damien; Ross, Caroline; Atulasimha, Jayasimha | We perform micromagnetic simulations to show that energy efficient [1] strain control of domain wall (DW) in a perpendicularly magnetized racetrack can realize a multi-state synapse well suited to neuromorphic computing-based classification tasks. | Session 17: Domain Walls |
| 208 | Degradation of domains with sequential field application | Caballero, Nirvana | In this work, we use a simple scalar-field model which only considers two preferential values for an order parameter, short-range exchange, disorder, and temperature. | Session 17: Domain Walls |
| 209 | Purely Spintronic Perceptron with Unsupervised Learning Enabled by Four-Terminal Domain Wall-Magnetic Tunnel Junction Neuron | Hassan, Naimul; Brigner, Wesley; Bennet, Christopher; Velasquez, Alvaro; Hu, Xuan; Akinola, Otitoaleke; Cui, Can; Garcia-Sanchez, Felipe; Marinella, Matthew; Incorvia, Jean Anne; Friedman, Joseph | We propose a four-terminal domain wall-magnetic tunnel junction (DW-MTJ) neuron that enables the first-ever CMOS-free purely spintronic perceptron with unsupervised learning. | Session 17: Domain Walls |
| 210 | Presaturation phase in the frustrated ferro-antiferromagnet Pb2VO(PO4)2 | Landolt, Florian; Bettler, Simon; Yan, Zewu; Gvasaliya, Severian; Zheludev, Andrey; Mishra, Sanu; Sheikin, Ilya; Kraemer, Steffen; Horvatić, Mladen; Gazizulina, Alsu; Prokhnenko, Oleksandr | In this talk the full H-T phase diagram, determined by means of magnetization, torque, NMR and high field neutron diffraction experiments, are presented and properties of the presaturation phase are discussed [2]. | Session 18: Exotic Magnetic Orders and Excitations |
| 211 | Quantum phases diagram of the the Shastry-Sutherland compound SrCu2(BO3)2 at high magnetic field and high pressure | Shi, Zhenzhong; Dissanayake, Sachith; Graf, David; Corboz, Philippe; Silevitch, Daniel; Dabkowska, Hanna; Rosenbaum, Thomas; Mila, Frederic; Haravifard, Sara | Here, we report a comprehensive study of the quantum phase diagram of the plaquette state by tuning the pressure and magnetic field, using a highly sensitive magnetization measurement technique. | Session 18: Exotic Magnetic Orders and Excitations |
| 212 | Decay and renormalization in S=1 antiferromagnet Ba2FeSi2O7 | Zhang, Hao; Do, Seunghwan; Williams, Travis; Hong, Tao; Garlea, Vasile; Jang, Tae-Hwan; Park, Jae-Hoon; Christianson, Andy; Batista, Cristian | By applying a generalized linear spin wave theory with one-loop corrections, we reproduce the observed decay and the renormalization of the different modes. | Session 18: Exotic Magnetic Orders and Excitations |
| 213 | Spectral signatures of magnon interactions in antiferromagnets in high fields | Keselman, Anna; Balents, Leon; Starykh, Oleg | In this talk I will discuss signatures of interactions between magnons that show up in the dynamical spin correlations of antiferromagnets in presence of a magnetic field, focusing on the high magnetization regime. | Session 18: Exotic Magnetic Orders and Excitations |
| 214 | Quantum antiferromagnets in the XY limit | PAL, SANTANU; Sharma, Prakash; Changlani, Hitesh; Pujari, Sumiran | We apply the general principle of exact coloring GSS to long-range magnetic order on the triangular and extend it to unfrustrated bipartite lattices where the ES corresponds to a two-coloring ground state (GS). | Session 18: Exotic Magnetic Orders and Excitations |
| 215 | A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet | Okuma, Ryutaro; Nakamura, Daisuke; Okubo, Tsuyoshi; Miyake, Atsushi; Matsuo, Akira; Kindo, Koichi; Tokunaga, Masashi; Kawashima, Naoki; takeyama@issp.u-tokyo.ac.jp, Shojiro; Hiroi, Zenji | We propose that these quantum states can be interpreted as crystallizations of emergent magnons localized on the hexagon of the kagomé lattice. | Session 18: Exotic Magnetic Orders and Excitations |
| 216 | Frustration-driven marginal phase transition at finite temperature in an Ising model in one dimension | Yin, Weiguo | The Ising model, with simple short-range interactions between constituents (e.g., spins), is a basic mathematical model in statistical mechanics for describing phase transitions in various many-body systems. | Session 18: Exotic Magnetic Orders and Excitations |
| 217 | Two-photon magnetic resonance as detector of magnon pairs and spin nematic orders | Sato, Masahiro; Morisaku, Yoshitaka | Proposing an efficient experimental way of detecting spin-nematic (SN) order is important to deepen the understanding of spin nematicity and frustrated magnetism. | Session 18: Exotic Magnetic Orders and Excitations |
| 218 | Dynamics of a fractal set of 1st order phase transitions and comparison to XPCS data in Lu2CoMnO6 | Carr, Adra; Bowlan, John; Mazzoli, Claudio; Barbour, Andi; Hu, Wen; Wilkins, Stuart; Walker, Colby; Ding, Xiaxin; Kim, Jonghyuk; Lee, Nara; Choi, Youngjai; Lin, Shi-Zeng; Sandberg, Richard; Zapf, Vivien | The Axial Next Nearest Neighbor Ising model predicts a fractal (infinite) set of phases with incommensurate wave vectors that are separated by 1st order phase boundaries. | Session 18: Exotic Magnetic Orders and Excitations |
| 219 | A zoo of presaturation phases in novel quantum ferro-antiferromagnets. | Zheludev, Andrey; Bettler, Simon; Bhartiya, Vivek; Flavian Blasco, Daniel; Hayashida, Shohei; Landolt, Florian; Povarov, Kirill; Yan, Zewu | A zoo of presaturation phases in novel quantum ferro-antiferromagnets. | Session 18: Exotic Magnetic Orders and Excitations |
| 220 | Observation of additional magnetic modulation vectors in the element Neodymium | Suriya Arachchige, Hasitha; DeBeer-Schmitt, Lisa; May, Andrew; Parker, David; Bleuel, Markus; Pokharel, Ganesh; Rai, Binod; Paddison, Joseph; Tian, Wei; Matsuda, Masaaki; Liu, Yaohua; Mandrus, David; Batista, Cristian; Christianson, Andrew | Here we report the observation of a new set of magnetic modulation vectors through small angle neutron scattering (SANS) and single-crystal neutron diffraction measurements. | Session 18: Exotic Magnetic Orders and Excitations |
| 221 | Effects of correlations on the electronic structure and pairing in Fe-chalcogenides | Kreisel, Andreas | Here, I present some examples how spin-fluctuations and nonlocal correlation effects determine the electronic structure in Fe based superconductors [1] and lead to orbitally selective decoherence. | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 222 | Effect of hydrostatic pressure and uniaxial stress on the competing phases in iron-based superconductors | Gati, Elena; Xiang, Li; Budko, Sergey; Canfield, Paul | In this talk, we focus on new insights into the phase relation under pressure [1] of two members, FeSe and BaFe 2As 2, from specific heat [2] and elastoresistance measurements [3] made under hydrostatic pressures up to ~ 2.5 GPa. | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 223 | Suppression of superconducting parameters in magnetic layered superconductors by correlated quasi-two-dimensional magnetic fluctuations | Koshelev, Alexei | Motivated by physics of RbEuFe 4As 4, we consider a layered magnetic superconductor in which a magnetic transition takes place inside a superconducting state and the exchange interaction between superconducting and magnetic subsystems is weak. | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 224 | Effect of electron irradiation on the magnetic properties of EuFe2(As1−xPx)2 ferromagnetic superconductor | Ghimire, Sunil; Cho, Kyuil; Konczykowski, Marcin; cavani, olivier; Tanatar, Makariy; Tamegai, Tsuyoshi; Prozorov, Ruslan | Effect of electron irradiation on the magnetic properties of EuFe2(As1−xPx)2 ferromagnetic superconductor | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 225 | Magnetic anisotropy from strain-induced dislocations in correlated electron systems | Pal, Mainak; Bettmann, Laetitia; Kreisel, Andreas; Hirschfeld, Peter | Here we investigate a simple microscopic model of a strain-induced dislocation in the presence of electronic correlations, which create defect states that can drive magnetic anisotropy of this kind, if spin orbit interaction is present. | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 226 | Dynamical Magnetism in Superconducting and Non-Superconducting 11 Iron Chalcogenides | Zaliznyak, Igor; Li, Yangmu; Savici, Andrei; Garlea, Vasile; Xu, Zhijun; Gu, Genda; Tranquada, John | Here, we present polarized neutron scattering studies of magnetic dynamics in Fe 1+yTe 1-xSe x samples with and without superconductivity. | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 227 | Two types of magnetic shape-memory effects in Fe1+yTe | Roessler, Sahana; Koz, Cevriye; Wang, Zhaosheng; Skourski, Yurii; Doerr, Mathias; Kasinathan, Deepa; Rosner, Helge; Schmidt, Marcus; Schwarz, Ulrich; Roessler, Ulrich; Wirth, Steffen | Here we present a detailed experimental study of Fe 1+yTe (y = 0.11 and 0.12) using pulsed magnetic fields up to 60 T. | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 228 | New Investigations of Iron Pnictides Using Zero-Field Nuclear Magnetic Resonance | Ansari, Jaafar; Mazin, Igor; Sauer, Karen | We present calculations of the signal’s polarization, as well as the Rabi frequency, when HF and EFG are comparable to reveal the additional information afforded by such studies. | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 229 | STM/S study of surface reconstruction and atomic defects on iron-based superconductors | Ge, Zhuozhi; Zou, Qiang; Fu, Mingming; Sanjeewa, Liurukara; Sefat, Athena; Gai, Zheng | Here, we systematically investigated the surface of low-temperature cleaved parent and doped BaFe 2As 2 superconductors by scanning tunneling microscopy/spectroscopy (STM/S). | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 230 | Disorder-Induced Universalily of Hole-doped 122-Type Pnictide Superconductors Phase Diagrams | Chmaissem, Omar; Stadel, Ryan; Taddei, Keith; Khalyavin, Dmitry; Manuel, Pascal; Lapidus, Saul; Osborn, Raymond; Rosenkranz, Stephan | We find that the C 4 phase is confined to regions in which the As-Fe-As bond angle is close to that of a perfect tetrahedron and that the T N’s of the SDW and C 4 phases are linked by a scaling equation consistent with a common origin as itinerant nesting instabilities. | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 231 | Sulfur-induced magnetism in iron-chalcogenide thin films | Nabeshima, Fuyuki; Kawai, Yuma; Shikama, Naoki; Sakishita, Yuki; suter, andreas; Park, Sang Eun; Adachi, Tadashi; Maeda, Atsutaka | Sulfur-induced magnetism in iron-chalcogenide thin films | Session 19: Fe-Based Superconductors: Magnetism and Electronic Correlations |
| 232 | GMAG Business Meeting (6:00pm-7:00pm) | Morrison, Terrance | GMAG Business Meeting (6:00pm-7:00pm) | Session 20: GMAG Business Meeting (6:00pm-7:00pm) |
| 233 | Electrical tuning of Metamagnetic Transition of Quasi-2D Jeff=1/2 Antiferromagnet by In Situ Anisotropic Strain | Pandey, Shashi; Zhang, Han; Hao, Lin; Yang, Junyi; Sanchez, Joshua; Huang, Qing; Noordhoek, Kyle; Xing, Chengkun; Gong, Dongliang; May, Andrew; Chu, Jiun-Haw; Kim, Jong-Woo; Ryan, Philip; Zhou, Haidong; Liu, Jian | In this work, we investigate the tuning of the metamagnetic transition of the AF structure in Sr 2IrO 4 by applying anisotropic strain of the B 2g symmetry. | Session 21: Iridates and Kitaev Materials |
| 234 | Evidence of a weakly-correlated Majorana liquid in the Kitaev magnet Ag3LiIr2O6 | Heath, Joshuah; Bahrami, Faranak; Movshovich, Roman; Chen, Xiao; Bedell, Kevin; Tafti, Fazel | In this work, we describe the apparent Sommerfeld coefficient and exotic T-dependence in the specific heat of Ag3LiIr2O6 via a Landau-Fermi liquid theory of itinerant Majorana-like quasiparticles. | Session 21: Iridates and Kitaev Materials |
| 235 | Theory of two-dimensional nonlinear spectroscopy for the Kitaev spin liquid | Choi, Wonjune; Lee, Ki Hoon; Kim, Yong-Baek | In this talk, we discuss how two-dimensional nonlinear spectroscopy can sharply reveal distinctive signatures of fractionalized excitations in quantum spin liquids by considering the example of the exactly solvable Kitaev honeycomb model. | Session 21: Iridates and Kitaev Materials |
| 236 | Spontaneous Chiral-Spin Ordering in Spin-Orbit Coupled Honeycomb Magnets | Luo, Qiang; Stavropoulos, Panagiotis Peter; Kee, Hae-Young | Here, we study a generic spin model and discover a novel chiral-spin ordering with spontaneous broken time-reversal symmetry near the dominant Γ region. | Session 21: Iridates and Kitaev Materials |
| 237 | Multicritical pinch-offs on the Triangular and Kagome lattice | Rakala, Geet; Damle, Kedar | We extend our analysis to the frustrated Kagome Ising antiferromagnet wherein a similar two-step melting of the three-sublattice ordered phase can be tuned into a multicritical pinch-off. | Session 21: Iridates and Kitaev Materials |
| 238 | Comprehensive control of the metamagnetism of antiferromagnet Sr2IrO4 via pseudo Jahn-Teller Effect | Zhang, Han; Hao, Lin; Yang, Junyi; Mutch, Joshua; Liu, Zhaoyu; Huang, Qing; Noordhoek, Kyle; May, Andrew; Chu, Jiun-Haw; Kim, Jong Woo; Ryan, Philip; Zhou, Haidong; Liu, Jian | Here we show that, by applying anisotropic strain up to only 0.05%, we can in-situ modulate the metamagnetic transition field by almost 300% of the spin-orbit-coupled Mott insulator Sr 2IrO 4, which is an important representative of the 5d transition metal oxides. | Session 21: Iridates and Kitaev Materials |
| 239 | Magnetic phase transition in mott-insulating ferrimagnetic Lu2NiIrO6 | Bhandari, Govinda; Kaphle, Gopi; Yadav, Dinesh; Paudyal, Durga | Using the first-principles density functional approach, here, we investigate electronic and magnetic properties of newly discovered double perovskite Lu2NiIrO6 under the cooperative effect of Coulomb interaction (U) for Ni-3d and Ir-5d elements and spin orbit coupling (SOC). | Session 21: Iridates and Kitaev Materials |
| 240 | Kitaev material candidates in the f-block | Ramanathan, Arun; Daum, Marcus; Mourigal, Martin; La Pierre, Henry | In this talk, I will present our work on a lanthanide based, Kitaev material candidate with a potential Jeff =1/2 ground state. | Session 21: Iridates and Kitaev Materials |
| 241 | Revealing divergent length scales in the Kitaev honeycomb model with quantum Fisher information. | Lambert, James; Sorensen, Erik | We present results for the QFI in the Kitaev honeycomb model (KHM), where the derivatives of the QFI with respect to the driving parameter detect the presence of the gapped-gapless phase transition by. | Session 21: Iridates and Kitaev Materials |
| 242 | The nature of complex magnetic interactions and the role of domain dynamics in Sr3(Ni,Co)IrO6 | Chikara, Shalinee; Haskel, Daniel; Rosenberg, Richard; Cheong, Sang-Wook; Zapf, Vivien | I present the result of our magnetization and, x-ray spectroscopy and dichroism studies to shed light on these questions. | Session 21: Iridates and Kitaev Materials |
| 243 | Lattice dynamics in the spin-1/2 frustrated Cu-based kagome compounds | Li, Ying; Pustogow, Andrej; Biesner, Tobias; Roh, Seulki; Bories, Mathias; Puphal, Pascal; Krellner, Cornelius; Dressel, Martin; Valenti, Roser | We investigate the lattice dynamics in herbertsmithite ZnCu 3(OH) 6Cl 2 and a newly synthesized Cu-based Kagome compound Y 3Cu 9(OH) 19Cl 8 [1] by a combination of infrared spectroscopy measurements and ab initio density functional theory calculations. | Session 21: Iridates and Kitaev Materials |
| 244 | Phonon damping by magnetic fluctuations in the magnetic spin-orbit insulator, Ba4Ir3O10 | Sokolik, Aaron; Pellatz, Nick; Roy, Susmita; Cao, Gang; Reznik, Dmitry | We will present results of Raman scattering experiments on Sr-doped, undoped and magnetic field-grown samples of Ba 3Ir 4O 10, which demonstrate damping of the phonons by magnetic fluctuations. | Session 21: Iridates and Kitaev Materials |
| 245 | Strain engineering of the magnetic multipole moments and anomalous Hall effect in pyrochlore iridate thin films | Kim, Woo Jin; Oh, Taekoo; Song, Jeongkeun; Ko, Eun Kyo; Li, Yangyang; Mun, Junsik; Kim, Bongju; Son, Jaeseok; Yang, Zhuo; Kohama, Yoshimitsu; Kim, Miyoung; Yang, Bohm-Jung; Roh, Tae Won | Accordingly, a theoretical study showed that higher-rank multipoles formed by a cluster of spins (cluster multipoles) can generate the anomalous Hall Effect without magnetization. | Session 21: Iridates and Kitaev Materials |
| 246 | Effects of exchange distortions and spin rotation on the spin dynamics of the magnetic Kagome lattice | Coker, Abigail; Saxena, Avadh; Haraldsen, Jason | In this talk, we examine the effect of distorted magnetic interactions in the Kagome lattice on the spin-wave dynamics. | Session 22: Kagome & Triangular Systems |
| 247 | Fracton behavior in frustrated kagome spin models | Reuther, Johannes; Hering, Max; Yan, Han | Here, we discuss fracton behavior in simple classical spin models on the kagome lattice with frustrated two-body interactions only. | Session 22: Kagome & Triangular Systems |
| 248 | Thermal and dynamical properties of the S=1/2 bilayer breathing-kagome Heisenberg magnet – application to Ca10Cr7O28 – | Shimokawa, Tokuro; Pohle, Rico; Yan, Han; Shannon, Nicholas | Recent experimental studies suggested that Ca 10Cr 7O 28 [1] is a promising candidate for a quantum spin liquid (QSL) ground state. | Session 22: Kagome & Triangular Systems |
| 249 | Role of chemical pressure on the electronic and magnetic properties of the spin-1/2 kagome mineral averievite | Dey, Dibyendu; Botana, Antia | Role of chemical pressure on the electronic and magnetic properties of the spin-1/2 kagome mineral averievite | Session 22: Kagome & Triangular Systems |
| 250 | Resonant inelastic x-ray scattering study of vector chiral ordered kagome antiferromagnet | Datta, Trinanjan; Xiong, Zijian; Yao, Dao-Xin | We study the resonant inelastic x-ray scattering (RIXS) features of vector chiral ordered kagome antiferromagnets. | Session 22: Kagome & Triangular Systems |
| 251 | Topological Quantum Many-Body Scars in Quantum Dimer Models on the Kagome Lattice | Wildeboer, Julia; Seidel, Alexander; N S, Srivatsa; Nielsen, Anne; Erten, Onur | We present a general strategy to turn classes of frustration free lattice models into similar classes containing quantum many-body scars within the bulk of their spectrum while preserving much or all of the original symmetry. | Session 22: Kagome & Triangular Systems |
| 252 | Spin-dynamics of the Lieb lattice with variable exchange parameters | Pagan, Jose; Saxena, Avadh; Haraldsen, Jason | In this talk, we discuss the effects of variable exchange interactions on the spin dynamics of the Lieb lattice. | Session 22: Kagome & Triangular Systems |
| 253 | Characterizing the Spin-½ Heisenberg model on the triangular lattice through the Dynamical Spin Structure Factor | Tang, Ta; Moritz, Brian; Devereaux, Thomas | Here, we use exact diagonalization on a series of finite-size clusters to analyze the character of the ground state and lowest-lying the excited states of the model for various values of J2. | Session 22: Kagome & Triangular Systems |
| 254 | Magnetization plateaux in the anisotropic triangular quantum antiferromagnet Cs2CoBr4 | Povarov, Kirill; Facheris, Leonardo; Velja, Stefan; Blosser, Dominic; Yan, Zewu; Gvasaliya, Severian; Zheludev, Andrey | We report the highly unusual magnetic phase diagram of a novel frustrated antiferromagnet Cs 2CoBr 4. | Session 22: Kagome & Triangular Systems |
| 255 | Measurement of a 1/2 magnetization plateau in a triangular antiferromagnet | Haley, Shannon; Weber, Sophie; Cookmeyer, Taylor; Parker, Daniel; Maniv, Eran; Maksimovic, Nikola; John, Caolan; Doyle, Spencer; Maniv, Ariel; Ramakrishna, Sanath; Reyes, Arneil; Singleton, John; Moore, Joel; Neaton, Jeffrey; Analytis, James | This talk will discuss our discovery of a ½ magnetization plateau in a frustrated antiferromagnet on a triangular lattice using fields up to 60T, as well as our minimal model, informed by ab initio calculations, that predicts this behavior. | Session 22: Kagome & Triangular Systems |
| 256 | Lattice dynamics in the Kagome metal Sc3Mn3Al7Si5 | Li, Xiyang; Reig-i-Plessis, Dalmau; Liu, Pengfei; Wu, Shan; Hallas, Alannah; Stone, Matthew; Broholm, Collin; Aronson, Meigan | The partial phonon DOS calculation shows that the phonon DOS arises mainly from the Sc atoms, while that of the Mn atoms makes only a small contribution. | Session 22: Kagome & Triangular Systems |
| 257 | Unconventional phase transitions in the classical J1-J2 XY antiferromagnet on the kagome lattice | Kakizawa, Fumiya; Misawa, Takahiro; Shinaoka, Hiroshi | In this talk, we investigate the finite-temperature phase diagram of classical J1-J2 XY antiferromagnets on the kagome lattice through extensive Monte Carlo simulations. | Session 22: Kagome & Triangular Systems |
| 258 | STM study of electron-phonon many-body interplay in a frustrated paramagnet | Jiang, Yuxiao; Yin, Jiaxin; Shumiya, Nana; Mardanya, Sougata; Zhang, Songtian; Hasan, Zahid; Lei, Hechang | Through the self-energy analysis, first-principles calculation, and a lattice vibration model, we present evidence that this mode arises from the geometrically frustrated phonon flat-band, which is the lattice bosonic analog of the kagome electron flat-band. | Session 22: Kagome & Triangular Systems |
| 259 | Stuffed honeycomb lattice in magnetic field | Sahoo, Jyotisman; Flint, Rebecca | In the current work, we analyze the phase diagram of the Heisenberg model with Dzyaloshinskii-Moriya (DM) interactions on the stuffed honeycomb lattice in a magnetic field. | Session 22: Kagome & Triangular Systems |
| 260 | Spin excitations in single crystal barlowite Cu4(OD)6FBr—a kagome quantum antiferromagnet | He, Wei; Smaha, Rebecca; Wen, Jiajia; Jiang, Mingde; Qiu, Yiming; Lee, Young | In this talk, I will present our recent inelastic neutron scattering data taken on coaligned crystals. | Session 22: Kagome & Triangular Systems |
| 261 | Bond dependent spin-orbital exchange and quantum order-by-disorder in CoTiO3 | McClarty, Paul | Recent theoretical work has proposed that such couplings can be significant in certain cobalt magnets where the spin-orbit coupling is sub-dominant [1]. | Session 23: Kitaev Systems |
| 262 | Easy-plane anisotropic-exchange honeycomb magnets: quantum effects and dealing with them | Maksimov, Pavel; Chernyshev, Alexander | We attempt a study of magnetic spectrum of the easy-plane anisotropic spin model on a honeycomb lattice with bond-dependent exchange interactions, which can be related to the extended Kitaev-Heisenberg model through the axes transformation. | Session 23: Kitaev Systems |
| 263 | Heisenberg-Kitaev models on hyperhoneycomb and stripyhoneycomb lattices: 3D–2D equivalence of ordered states and phase diagrams | Krüger, Wilhelm; Vojta, Matthias; Janssen, Lukas | To make contact with the physics of the iridates Li 2IrO 3, we analyze a minimal model including a symmetric off-diagonal Γ interaction, discuss its 3D–2D mapping, and determine the relevant phases which are realized in the materials. | Session 23: Kitaev Systems |
| 264 | SDRG Study of Random Kitaev Chains and Ladders | Kao, Wen-Han; Perkins, Natalia | Here we present a study of random spin-1/2 chain and ladder with bond-directional Kitaev-like interactions. | Session 23: Kitaev Systems |
| 265 | Polarized Inelastic Neutron Scattering Results on the Kitaev Spin-Liquid Candidate D3LiIr2O6 | Halloran, Thomas; Wang, Yishu; Broholm, Collin | Both polarized and unpolarized inelastic studies reveal information regarding the low energy excitations in the potential KSL state. | Session 23: Kitaev Systems |
| 266 | Majorana-mediated spin transport in Kitaev quantum spin liquids | Minakawa, Tetsuya; Murakami, Yuta; Akihisa, Koga; Nasu, Joji | We study the spin transport through the quantum spin liquid (QSL) by investigating the real-time and real-space dynamics of the Kitaev spin system with zigzag edges using the time-dependent Majorana mean-field theory. | Session 23: Kitaev Systems |
| 267 | Low Temperature Thermal Transport in RuCl3 | Czajka, Peter; Gao, Tong; Hirschberger, Max; Lampen-kelley, Paula; Banerjee, Arnab; Yan, Jiaqiang; Mandrus, David; Nagler, Stephen; Ong, N. Phuan | Low Temperature Thermal Transport in RuCl3 | Session 23: Kitaev Systems |
| 268 | Raman spectroscopy evidence for dimerization and Mott collapse in α-RuCl3 under pressures | gm, Li | We perform Raman spectroscopy studies on α-RuCl 3 at room temperature to investigate its phase transitions of magnetism and structure under pressure. | Session 23: Kitaev Systems |
| 269 | Tunneling spectroscopy of quantum spin liquids | Koenig, Elio; Randeria, Mallika; Jaeck, Berthold | We address the spectral modifications that arise in a magnetic field which is applied to drive the candidate material α-RuCl3 into a QSL phase, and we propose a lateral 1D tunnel junction as a viable setup in this regime. | Session 23: Kitaev Systems |
| 270 | Bond directional anisotropy and Dzyaloshinskii–Moriya interaction induced meta-magnetic state in honeycomb lattice magnet Tb2Ir3Ga9 | Khan, Mojammel Alam; Fishman, Randy; Zhang, Qiang; Ye, Feng; Mitchell, John | Bond directional anisotropy and Dzyaloshinskii–Moriya interaction induced meta-magnetic state in honeycomb lattice magnet Tb2Ir3Ga9 | Session 23: Kitaev Systems |
| 271 | Phonon dynamics of Kitaev spin liquid at finite temperatures | Feng, Kexin; Ye, Mengxing; Perkins, Natalia | Here we propose to study the signatures of the fractionalized excitations in Kitaev materials by exploiting their coupling to lattice vibrations [2]. | Session 23: Kitaev Systems |
| 272 | Kitaev interactions in metallic bands and resulting Berry curvature distributions | Zhang, Wenjuan; Addison, Zachariah; Trivedi, Nandini | The Kitaev spin model on a honeycomb lattice with competing bond-dependent interactions describes a quantum spin liquid (QSL) with topological order and fractionalized excitations. | Session 23: Kitaev Systems |
| 273 | Magnetic Anisotropy in Spin-3/2 with Heavy Ligand in Honeycomb Mott Insulators: Application to CrI3 | Stavropoulos, Panagiotis Peter; Liu, Xiaoyu; Kee, Hae-Young | Here we derive a microscopic spin model of S=3/2 on transition metals surrounded by heavy ligands in honeycomb Mott insulators using a strong-coupling perturbation theory. | Session 23: Kitaev Systems |
| 274 | The Kitaev-Heisenberg-Γ Model on the Honeycomb Lattice | Zhang, Shang-Shun; Halasz, Gabor; Batista, Cristian | We obtain the low-energy excitation spectrum and the dynamical spin structure factor of the Kitaev-Heisenberg-Γ model using a novel variational approach, that becomes exact at the exactly solvable Kitaev points. | Session 23: Kitaev Systems |
| 275 | Sign structure of thermal Hall conductivity for in-plane field polarized Kitaev magnets | Chern, Li Ern; Zhang, Emily; Kim, Yong-Baek | We demonstrate that this sign structure is a generic property of the polarized state in the presence of in-plane magnetic fields. | Session 23: Kitaev Systems |
| 276 | Investigation of Sample Dependence in α-RuCl3 Crystals | Kim, Subin; Kim, Young-June | To investigate the sample dependence in α-RuCl3, various α-RuCl3 crystals grown using chemical vapour transport method with different conditions were characterized. | Session 23: Kitaev Systems |
| 277 | Quantum-classical crossover in the spin-1/2 Heisenberg-Kitaev kagome magnet | Yang, Yang; Rousochatzakis, Ioannis; Perkins, Natalia | In our recent work [1], we revisit the crossover from the quantum resonating valence bond (RVB) phase to a semiclassical regime brought about by anisotropic Kitaev interactions in the spin-1/2 Heisenberg kagome antiferromagnet, and focus on the precise mechanisms underpinning this crossover. | Session 23: Kitaev Systems |
| 278 | NMR Investigation on Honeycomb Iridate Ag3LiIr2O6 | Wang, Jiaming; Bahrami, Faranak; Yuan, Weishi; Singer, Philip; Yang, Hung-Yu; Tafti, Fazel; Imai, Takashi | We use 7Li nuclear magnetic resonance (NMR) to investigate the physical properties of two samples of Ag 3LiIr 2O 6 based on Knight shift and spin-lattice relaxation rate 1/T 1. | Session 23: Kitaev Systems |
| 279 | Thermodynamic perspective on the field-induced behavior of \alpha-RuCl3 | Gegenwart, Philipp | Thermodynamic perspective on the field-induced behavior of \alpha-RuCl3 | Session 23: Kitaev Systems |
| 280 | Magnetic vortex liquid and anomalous thermal Hall conductivity in frustrated magnets with bond-dependent interactions | Chern, Li Ern; Buessen, Finn; Kim, Yong-Baek | Here, considering frustrated magnets with bond-dependent interactions, which are realized in the so-called Kitaev materials, we theoretically demonstrate that a large thermal Hall conductivity can originate from a classical ground state without any magnetic order. | Session 23: Kitaev Systems |
| 281 | Analyzing thermodynamic signatures of field-induced phase transitions in α-RuCl3 | Kaib, David; Biswas, Sananda; Riedl, Kira; Winter, Stephen; Valenti, Roser | We compare to generalized Kitaev models using exact diagonalization methods, obtaining qualitative agreement. | Session 23: Kitaev Systems |
| 282 | Revealing the Phase Diagram of Kitaev Materials by Machine Learning | Liu, Ke; Sadoune, Nicolas; Rao, Nihal; Greitemann, Jonas; Pollet, Lode | We use an unsupervised and interpretable machine-learning method, the tensorial-kernel support vector machine (TK-SVM), to study the phase diagram of candidate models for Kitaev materials. | Session 23: Kitaev Systems |
| 283 | Order by disorder and Kosterlitz-Thouless transitions in classical Gamma-model subject to a magnetic field | Tian, Zhongzheng; Fan, Zhijie; Saha, Preetha; Chern, Gia-Wei | We present a combined analytical and numerical study of honeycomb Gamma model subject to magnetic field in the high-symmetry direction. | Session 23: Kitaev Systems |
| 284 | Weak-field induced nonmagnetic state in a Co-based honeycomb | Zhong, Ruidan; Gao, Tong; Ong, Nai; Cava, Robert | Here we report our studies on BaCo 2(AsO 4) 2, for which we find that the magnetic order associated with the non-Kitaev interactions can be fully suppressed by a relatively low magnetic field, yielding a non-magnetic material and implying the presence of strong magnetic frustration and weak non-Kitaev interactions. | Session 23: Kitaev Systems |
| 285 | Strain effects in α-RuCl3 from first principles | Biswas, Sananda; Kaib, David; Riedl, Kira; Winter, Stephen; Leeb, Valentin; Knolle, Johannes; Valenti, Roser | We find that Kitaev interaction gets strongly enhanced under compression. | Session 23: Kitaev Systems |
| 286 | Testing Topological Phase Transitions in Kitaev Materials Under In-Plane Magnetic Fields | Gordon, Jacob; Kee, Hae-Young | Material realization of the non-Abelian Kitaev spin liquid phase – an example of Ising topological order (ITO) – has been the subject of intense research in recent years. | Session 23: Kitaev Systems |
| 287 | Evidence for Vector Chiral Magnetic Order in κ-(BETS)2Mn[N(CN)2]3 | Winter, Stephen; Riedl, Kira; Hartmann, Steffi; Zielke, David; Kushch, Natalia; Gati, Elena; Biberacher, Werner; Valenti, Roser; Lang, Michael; Kartsovnik, Mark; Yagubskii, Eduard | Based on analysis of specific heat, magnetic torque, and NMR measurements combined with ab-initio calculations, we will address: (i) The nature and role of π- d interactions, (ii) the magnetic interactions within the BETS layers including SOC and ring-exchange, (iii) the origin of anomalous angle dependence and therefore (iv) the character of the magnetic ground state at low pressure. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 288 | Realization of the orbital-selective Mott state at the molecular level in Ba3LaRu2O9 | Aczel, Adam; Chen, Qiang; Verrier, Aime; Ziat, Djamel; Clune, Amanda; Rouane, Redha; Bazier-Matte, Xavier; Ma, Jie; Calder, Stuart; Taddei, Keith; Dela Cruz, Clarina; Kolesnikov, Alexander; Cheng, Jinguang; Liu, Z.; Quilliam, Jeffrey; Musfeldt, Janice; Zhou, Haidong | In this work, we use bulk characterization, muon spin relaxation, neutron diffraction, and inelastic neutron scattering to identify a rare intermediate spin-3/2 per dimer state that cannot be understood in a double exchange or quasi-molecular orbital picture and instead arises from orbital-selective Mott insulating behavior at the molecular level. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 289 | Spin-Lattice Coupling in the Spin-1 Kagome Compound Na2Ti3Cl8 | Birol, Turan | In this talk, after giving a brief introduction to the idea of spin-lattice coupling, I am going to discuss a case study from a first principles theory point of view: Na2Ti3Cl8 is a 2 dimensional frustrated antiferromagnet, which hosts spin-1 Ti cations on a Kagome lattice. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 290 | Frustration-driven dimerization in two-leg Heisenberg ladder with trimer rungs | Weichselbaum, Andreas; Yin, Weiguo; Tsvelik, Alexei | We study the zero-temperature phase diagram, where we combine numerical and analytical methods into an overall consistent description. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 291 | Two- and three dimensional quantum-spin-1/2 XXZ magnets in zero magnetic field: global phase diagrams, thermodynamics and entanglement | Sariyer, Ozan | Global phase diagrams and critical properties of the field-free quantum-spin-1/2 XXZ model in two- and three-dimensions are obtained using a numerical renormalization group theory method. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 292 | Pressure-evolution of a symmetry-broken S = ½ dimer magnet | Curley, Sam; Coak, Matthew; Williams, Robert; Ghannadzadeh, Saman; Kamenskyi, Dmytro; Schneider, Andreas; Okubo, Susumo; Sakurai, Takahiro; Ohta, Hitoshi; Huddart, Benjamin; Lancaster, Tom; Graf, David; Tidy, Jere; Senn, Mark; Manson, Jamie; Goddard, Paul | Here we discuss the unusual hydrogen-bond-mediated exchange pathways in this material and the resultant phase diagram. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 293 | Decay of Higgs amplitude mode in quasi two-dimensional antiferromagnet Ba2FeSi2O7 | Do, Seunghwan; Zhang, Hao; Williams, Travis; Hong, Tao; Garlea, Vasile; Jang, Tae-Hwan; Park, Jae-Hoon; Batista, Cristian; Christianson, Andrew | We investigate the emergence of the longitudinal mode in two-dimensional square-lattice antiferromagnet Ba 2FeSi 2O 7 –easy-plane antiferromagnet with effective S=1 near a continuous quantum phase transition into a quantum paramagnet [2,3]. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 294 | Thermal conductivity of the quantum spin liquid candidate EtMe3Sb[Pd(dmit)2]2: No evidence of mobile gapless excitations | Doiron-Leyraud, Nicolas; Bourgeois-Hope, Patrick; Laliberte, Francis; Lefrancois, Etienne; Grissonnanche, Gael; René de Cotret, Samuel; Taillefer, Louis; Cui, Hengbo; Kato, Reizo; Kitou, Shunsuke; Sawa, Hiroshi | We examined this specific issue via thermal conductivity measurements on one of the most promising QSL candidates, the organic insulator EtMe 3Sb[Pd(dmit) 2] 2 (dmit-131). | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 295 | Exactly solvable Dimer Liquid and Ising Gauge Theory of a nonplanar Quantum Dimer Model on the Checkerboard Lattice | Wildeboer, Julia; Nussinov, Zohar; Seidel, Alexander | We present analytic results for a special dimer model on the nonbipartite and nonplanar checkerboard lattice that does not allow for parallel dimers surrounding diagonal links. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 296 | Quantum-to-classical correspondence in two-dimensional Heisenberg models | Wang, Tao; Cai, Xiansheng; Chen, Kun; Prokof’ev, Nikolai; Svistunov, Boris | We employ the bold diagrammatic Monte Carlo method to explore the universality of QCC by considering three different two-dimensional spin-1/2 Heisenberg models. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 297 | Quantum Magnetism in the Honeycomb Lattice Material YbCl3 | Christianson, Andy | This talk will focus on the physics of the honeycomb lattice Heisenberg model as probed by inelastic neutron scattering. | Session 24: Low Dimensional Magnets in the Quantum Limit |
| 298 | Stacking dependent magnetism in van der Waals magnets | Xiao, Di | In this talk, I will discuss stacking dependent magnetism in van der Waals magnets, using bilayer CrI 3 as an example. | Session 25: Low-Dimensional Van Der Waals Magnets |
| 299 | Rich behaviors of magnetic excitations in a two-dimensional honeycomb Ising magnet CrI3 | Zhao, Liuyan | In this talk, we report polarized micro-Raman spectroscopy studies on a 2D honeycomb magnet CrI3. | Session 25: Low-Dimensional Van Der Waals Magnets |
| 300 | Ferromagnetism in van der Waals compound Mn(Sb, Bi)2Te4 | Zhu, Jun | We report on the structural, magnetic, and electrical properties of MnSb 1.8Bi 0.2 Te 4 combining magneto-transport, SQUID magnetometry, x-ray and neutron scattering techniques. | Session 25: Low-Dimensional Van Der Waals Magnets |
| 301 | Manipulating the magnetism in Fe5GeTe2 by cobalt substitution | May, Andrew | Manipulating the magnetism in Fe5GeTe2 by cobalt substitution | Session 25: Low-Dimensional Van Der Waals Magnets |
| 302 | Van der Waals magnets based heterostructures | Chen, Yong | This talk will present some recent efforts along these lines, where we have fabricated various hybrids and heterostructures interfacing vdW/2D magnets with other (both vdW and non-vdW) materials and characterized them with optical (such as MOKE and Raman) and transport measurements. | Session 25: Low-Dimensional Van Der Waals Magnets |
| 303 | Anatomy of Voltage-Controlled Magnetic Anisotropy in Heterostructures with Atomically-Thin Heavy Metals | Kwon, Sohee; SUN, QILONG; Mahfouzi, Farzad; Wang, Kang-Lung; Amiri, Pedram; Kioussis, Nicholas | Employing ab initio electronic structure calculations we propose a MgO/ X/FeCo/MgO heterostructure, where X is an atomically-thin late transition metal (Ir, Pt, Rh), which exhibits both giant perpendicular magnetic anisotropy (PMA) and VCMA efficiency, where the former (latter) is one (one to two) order of magnitude higher than the values reported to date. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 304 | Determination of anisotropy constants of ferromagnetic multilayers via fitting of Stoner-Wohlfarth Model | Peterson, Sean; Idzerda, Yves | In this work the anisotropy energy was considered for both the bulk and the interface of ferromagnetic films. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 305 | First Principles Study of Magnetic Properties of Cr1+δTe2 | Huang, Zi Chao; Kong, Jian Feng; Fujisawa, Yuita; Okada, Yoshinori; Soumyanarayanan, Anjan; Khoo, Khoong Hong | Recent experimental efforts have demonstrated growth of Cr 1+δTe 2 films in the NiAs-type crystal structure over a wide range of δ values. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 306 | Magnetic anisotropy modification in a garnet ferrimagnet by interfacial spin orbit coupling | Wu, Guanzhong; Wang, Dongying; Verma, Nish; Cheng, Yang; Guo, Side; Cao, Guixin; Watanabe, Kenji; Taniguchi, Takashi; Lau, Chun Ning; Yang, Fengyuan; Randeria, Mohit; Bockrath, Marc; Hammel, P Chris | Here we report that a perpendicular magnetic anisotropy (PMA) is induced at the interface between YIG and a low symmetry high SOC semimetal, WTe 2. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 307 | New Co-Fe-N Magnetic Compounds Found Through Combined Computational and Experimental Methods | Balasubramanian, Balamurugan; Pahari, Rabindra; Wang, Cai-Zhuang; Xu, Xiaoshan; Ho, Kai-Ming; Sellmyer, David | Here we present the structure and magnetism of new compounds created by incorporating nitrogen and/or silicon in the interstitial or substitutional occupancies of Co, Fe, and FeCo. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 308 | Monte Carlo Simulations Exploring the Impact of Anisotropy on the Equilibrium Properties of Magnetic Tunnel Junction-Based Molecular Spintronics Device | Dahal, Bishnu; Savadkoohi, Marzieh; Grizzle, Andrew; Amir, Uzma; Suh, Pius; D’Angelo, Christopher; Tyagi, Pawan | This MCS study represents covalently bonded paramagnetic molecules across the edges of the magnetic tunnel junction (MTJ) with two FMs. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 309 | Large anisotropic magnetocaloric effect of MnP alloy: A theoretical study | Tran, Hung; Fukushima, Tetsuya; Momida, Hiroyoshi; Sato, Kazunori; Makino, Yukihiro; Oguchi, Tamio | Several rotating magnetocaloric materials have been reported in the previous experimental works, motivating us to study the rotating magnetocaloric effect in a theoretical framework. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 310 | Usage of Ce for the intrinsic properties of rare-earth permanent magnets | Matsumoto, Munehisa; Shishido, Hiroaki | There can be a trade-off among those preferred properties for rare-earth permanent magnets and we discuss a resolution of it based on an importance sampling approach in the virtual materials space. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 311 | Tailoring magnetism in self-intercalated Cr1+δTe2 epitaxial films | Fujisawa, Yuita; Almanza, Markel; Garland, Jennifer; Yamagami, Kohei; Zhu, Xing; Chen, Xiaoye; Araki, Kosei; Takeda, Takahito; Kobayashi, Masaki; Takeda, Yukiharu; Hsu, Chia-Hsiu; Chuang, Feng-Chuan; Laskowski, Robert; Khoo, Amy; Soumyanarayanan, Anjan; Okada, Yoshinori | Here, we investigated magnetic properties of Cr 1+δTe 2 epitaxial films with varying δ. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 312 | The Néel vector control in antiferromagnetic CrSb by electron filling, strain, and electric field | Park, In Jun; Kwon, Sohee; Lake, Roger | We performed density functional theory calculations to investigate the effects of strain, band filling, and electric field on the magnetic anisotropy energy (MAE) of bulk and thin-film CrSb. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 313 | Magnetic Anisotropy, Anisotropic Magnetoresistance, and Planar Hall Effect in Phase-Separated (La1-yPry)1-xCaxMnO3 Thin Films | Paykar, Ashkan; Biswas, Amlan | We observed anisotropic magnetoresistance (AMR) associated with the magnetic anisotropy at low magnetic fields. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 314 | Intrinsic Exchange Bias in Epitaxial CoFe2O4/Al2O3 thin film | Yang, Detian; Yun, Yu; Xu, Xiaoshan | The structural analysis using time-resolved reflection high energy electron diffraction during the growth, suggests that an AFM layer has developed between the substrate and the CoFe2O4 thin film. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 315 | Novel database driven method for discovering new Co-based ferromagnets | Byland, Journey; Shi, Yunshu; Ding, Shaoqing; Mata, Rogelio; Magliari, Haley; Parker, David; Palasyuk, Andriy; Budko, Sergey; Canfield, Paul; Klavins, Peter; Taufour, Valentin | From this data, we illustrate how we discovered new ferromagnets with Curie temperature above room temperature, and uniaxial anisotropy. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 316 | Suppression of first-order transition and large magnetocaloric effect in Mn50-xNi40In10+x | Lehmann, Zachary; Flesche, Matthew; Paudel, Tula; Kharel, Parashu | We have investigated Mn 50-xNi 40In 10+x alloys prepared by arc melting and vacuum annealing. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 317 | Magnetic and structural properties of Co(Fe)-Ni-Al(Ga) Heusler alloys | Miroshkina, Olga; Gruner, Markus; Buchelnikov, Vasiliy; Sokolovskiy, Vladimir | In this work, we report on systematic first-principle investigations of the structural and magnetic properties of Co 2NiAl, Fe 2NiAl, and Fe 2NiGa-based Heusler alloys. | Session 26: Magnetic Anisotropy: Measurement, Materials and Devices |
| 318 | Magnon Landau Levels and Spin Responses in Antiferromagnets | Kovalev, Alexey; Li, Bo | We study gauge fields produced by gradients of the Dzyaloshinskii-Moriya interaction and propose a model of AFM topological insulator of magnons. | Session 27: Magnetic Excitations |
| 319 | Magnetism-dependent phonons and its effect on magnetic phase transition from first principles | Tanaka, Tomonori; Gohda, Yoshihiro | In this presentation, we introduce the impact of the magnetism-dependent phonon on the magnetic phase transition and the electronic origin of the dependence. | Session 27: Magnetic Excitations |
| 320 | Spin-wave emission in skyrmion-antiskyrmion bilayers | Diaz, Sebastian; HIROSAWA, TOMOKI; Loss, Daniel; Psaroudaki, Christina | Here, we propose that skyrmion-antiskyrmion bilayers form topological charge dipoles and act as efficient sub-100 nm SW emitters when excited by in-plane ac magnetic fields [1]. | Session 27: Magnetic Excitations |
| 321 | Signatures of a Liquid-Crystal Transition in Spin-Wave Excitations of Skyrmions | Mohanta, Narayan; Christianson, Andrew; Okamoto, Satoshi; Dagotto, Elbio | Inside the SkX, we find six spin-wave modes, which are supplemented by another mode originating from the ferromagnetic background. | Session 27: Magnetic Excitations |
| 322 | Anomalous spin excitation spectra in honeycomb systems Na2+xM2TeO6 (M=Co and Ni) with zig-zag magnetic ordering | Garlea, Vasile; Samarakoon, Anjana; Chen, Qiang; Zhou, Haidong | The role played by the magnetic frustration arising from competing exchange interactions on the magnetic properties of honeycomb systems continues to be the subject of intense research. | Session 27: Magnetic Excitations |
| 323 | Magnon-polaritons in hematite α-Fe2O3 | Bialek, Marcin; Zhang, Jianyu; Yu, Haiming; Ansermet, Jean-Philippe | We study coupling of electromagnetic waves to magnetization waves at THz frequencies [1]. | Session 27: Magnetic Excitations |
| 324 | Controlling the magnon-photon interface via a cavity Fano resonance | Gollwitzer, Jakob; Bocklage, Lars; Meier, Guido; Röhlsberger, Ralf | Here, we present a new scheme to achieve spectral control of magnon-photon coupling via Fano interference. | Session 27: Magnetic Excitations |
| 325 | Skyrmion mass from spin-phonon interaction | Capic, Daniel; Chudnovsky, Eugene; Garanin, Dmitry | Skyrmion mass from spin-phonon interaction | Session 27: Magnetic Excitations |
| 326 | Magnetic resonance imaging of spin-wave transport and interference in a magnetic insulator | Bertelli, Iacopo; Carmiggelt, Joris; Yu, Tao; Simon, Brecht; Pothoven, Coosje; Bauer, Gerrit; Blanter, Yaroslav; Aarts, Jan; van der Sar, Toeno | Using electron spins in diamond, we introduce a phase-sensitive detection scheme to image spin waves via their magnetic field, which we use to quantify the spin-wave precession amplitude in YIG and image spin-wave interference and caustics. | Session 27: Magnetic Excitations |
| 327 | Electrical generation and tunable routing of domain wall spin waves in van der Waals antiferromagnets | Rahman, Mohammad Mushfiqur; Rustagi, Avinash; Upadhyaya, Pramey | In this work, we show that layered van der Waals antiferromagnets with recently demonstrated voltage control of magnetic order [Nat. | Session 27: Magnetic Excitations |
| 328 | Skyrmions and antiskyrmions from current-induced boundary instabilities | Sandhoefner, Shane; Raeliarijaona, Aldo; Nepal, Rabindra; Snyder-Tinoco, Dalton; Kovalev, Alexey | We study generation and dynamics of skyrmions and antiskyrmions using current-induced torques at edges of magnetic regions with DMI (Dzyaloshinskii-Moriya interaction). | Session 27: Magnetic Excitations |
| 329 | Theory of electromagnon-mediated spin pumping | Masuda, Keisuke; Sato, Masahiro | In the present work, we theoretically study the SP in a multiferroicmagnet, focusing on its spiral ordered phase such as perovskite manganites RMnO 3. | Session 27: Magnetic Excitations |
| 330 | Spin waves in cylindrical nanowires in the vortex state | CASO PARAJON, DIEGO; Bran, Cristina; Garcia, Javier; Vazquez, Manuel; Guslienko, Konstantin; Aliev, Farkhad | Here, we present experimental results of dynamic stimulation of Fe28Co63Cu10 NWs with 120 nm diameter and 25 micron length. | Session 27: Magnetic Excitations |
| 331 | Coherent Diffraction Imaging of magnetic nanostructures using table-top and facility scale EUV/X-ray sources | Cating-Subramanian, Emma; Rana, Arjun; Liao, Chen-Ting; Lo, Yuan Hung; Bevis, Charles; Johnsen, Peter; Ryan, Sinead; Lu, Xingyuan; Gentry, Christian; Tanksalvala, Michael; Esashi, Yuka; Wang, Bin; Miao, Jianwei; Kapteyn, Henry; Murnane, Margaret | Correlative multi-modal spectro-microscopy using complementary nanoscale imaging and spectroscopic techniques at both the tabletop and facility scale provides access to a more complete range of elemental, chemical, electronic, magnetic, structural, and dynamic properties of complex samples. | Session 28: Magnetic Imaging |
| 332 | Formation of Field-Free Skyrmion Arrays in Pt/Co/Ni/Ir-based Multilayer Thin Films | Li, Maxwell; Rai, Anish; Pokhrel, Ashok; Sapkota, Arjun; Mewes, Tim; Mewes, Claudia; De Graef, Marc; Sokalski, Vincent | Here we demonstrate a simple method to form high-density skyrmion arrays at remanence following the brief application of a large in-plane magnetic field. | Session 28: Magnetic Imaging |
| 333 | Spin polarized STM imaging of nanoscale Néel Skyrmions in an SrIrO3/SrRuO3 Perovskite Bilayer | Corbett, Joseph; Meng, Keng-Yuan; Repicky, Jacob; Garcia-Diaz, Reyes; Rowland, James; Ahmed, Adam; Takeuchi, Noboru; Guerrero Sanchez, Jonathan; Yang, Fengyuan; Gupta, Jay | We use spin-polarized scanning tunneling microscopy to directly image isolated nanoscale Néel Skyrmions in a SrIrO 3 /SrRuO 3 bilayer system that are among the smallest reported to date in any system. | Session 28: Magnetic Imaging |
| 334 | Evidence for a Kondo Spin Resonance in Magnetic Iron Nanoislands on Antiferromagnetic Chromium Nitride (001) | Smith, Arthur; Alam, Khan; Ponce, Rodrigo; Ma, Yingqiao; Foley, Andrew; Shrestha, Ashok; Cocoletzi, Gregorio; Takeuchi, Noboru | We have explored the electronic properties of iron nanoislands on antiferromagnetic chromium nitride substrates [1] using low-temperature (4.2K) scanning tunneling spectroscopy, and we find sharp peaks or V-dips at the Fermi level for the nanoislands which are not seen in plain iron, chromium, or chromium nitride surfaces. | Session 28: Magnetic Imaging |
| 335 | Dynamic widefield imaging of strain using quantum defects in diamond | Dasika, Shishir; Saha, Kasturi | In this work we propose a novel device based on the wide field NV based magnetometer, which can sense strain through magneto elastic interaction and also act as probe for an array of straintronic devices. | Session 28: Magnetic Imaging |
| 336 | NV- center magnetometry using Bayesian inference and sequential experiment design | Dushenko, Sergey; Blakley, Sean; Ambal, Kapildeb; McMichael, Robert | In magnetometry using NV – centers, we demonstrate more than order-of-magnitude speed up with sequential Bayesian experiment design as compared with the conventional frequency-swept measurements. | Session 28: Magnetic Imaging |
| 337 | A Magnon Scattering Platform | Zhou, Tony; Carmiggelt, Joris; Gachter, Lisa; Esterlis, Ilya; Sels, Dries; Stohr, Rainer; Du, Chunhui; Fernandez, Daniel; Rodriguez-Nieva, Joaquin; Buettner, Felix; Demler, Eugene; Yacoby, Amir | Scattering techniques differ by the type of the particles used, the interaction these particles have with target materials and the range of wavelengths used. | Session 28: Magnetic Imaging |
| 338 | Nanoscale magnetization and microwave current imaging using scanning-probe magneto-thermal microscopy* | Zhang, Chi; Bartell, Jason; Karsch, Jonathan; Gray, Isaiah; Fuchs, Gregory | We present below 100 nm spatial resolution from imaging current density around a nano-constriction, and picosecond temporal resolution enabling phase-sensitive dynamics studies. | Session 28: Magnetic Imaging |
| 339 | Current flux imaging of a micromagnetic electrofoil | Mayes, David; Grossnickle, Maxwell; Lohmann, Mark; Li, Junxue; Aji, Vivek; Shi, Jing; Song, Justin; Gabor, Nathaniel | Similar to how tracers in a wind tunnel map the flow of air around an aerodynamic airfoil, we use a scanning laser beam as a source of directional spin and charge current to map the flow around precisely engineered wing shaped devices, or electrofoils. | Session 28: Magnetic Imaging |
| 340 | Nitrogen-induced reconstructions on the Cr(001) surface | Ventura-Macias, Emiliano; Guerrero Sanchez, Jonathan; Corbett, Joseph; Smith, Arthur; Takeuchi, Noboru | We described different reconstructions models of N on Cr(001) using DFT calculations andSTM data. | Session 28: Magnetic Imaging |
| 341 | Optically Probing Quantum Materials at milliKelvin Temperatures | Pai, Yun-Yi; Marvinney, Claire; Feldman, Matthew; Hua, Chengyun; Jeong, Jong-ryul; Lawrie, Benjamin | Scanning confocal microscopy offers plentiful mesoscale material information that bridges atomic-scale scanning probes and bulk characterization techniques. | Session 28: Magnetic Imaging |
| 342 | Magnetic imaging of thin film α-Fe2O3 using a single-spin magnetometer | Guo, Qiaochu; Cheng, Yang; Zhang, Pengxiang; Gray, Isaiah; Yang, Fengyuan; Liu, Luqiao; Nowack, Katja; Fuchs, Gregory | To better understand the magnetism of α-Fe 2O 3 and how it is manipulated, here we report magnetic imaging of α-Fe 2O 3 thin films with a nitrogen-vacancy center based scanning magnetometer. | Session 28: Magnetic Imaging |
| 343 | Topological Control of Magnetic Textures | Arava, Hanu; Barrows, Frank; Stiles, Mark; Petford-Long, Amanda | We introduce a discretized formulation of the winding number to identify the nature of the topology, associated with different magnetic configurations, in the surrounding ellipsoids. | Session 28: Magnetic Imaging |
| 344 | New functionalities at oxide interfaces: Ultralow-power magnetization switching by orbital selection and high-mobility two-dimensional hole/electron transport | Duc Anh, Le; Kaneta-Takada, Shingo; Tokunaga, Masashi; Seki, Munetoshi; Tabata, Hitoshi; Tanaka, Masaaki; Ohya, Shinobu | We present our recent findings: 1) Low-power magnetization control utilizing peculiar electronic structures of magnetic perovskite oxide interfaces [1,2], and 2) realization of a high-mobility two-dimensional “hole” gas (2DHG) and electron gas (2DEG) at an oxide interface [3]. | Session 29: Magnetic Interactions at Complex Oxide Interfaces |
| 345 | Spin-orbit coupling, local magnetism and Kondo scattering at a complex oxide interface | Pribiag, Vlad | I will discuss our low-temperature electronic transport studies of NdTiO 3/SrTiO 3 interfaces, which reveal an interplay between local ferromagnetic order, Kondo scattering and spin-orbit coupling. | Session 29: Magnetic Interactions at Complex Oxide Interfaces |
| 346 | Symmetry Control of Emergent Magnetism in 2D Oxide Monolayer and Heterostructures | Zhai, Xiaofang | Despite the challenge of probing the magnetism in monolayer and few layer thicknesses, we performed comprehensive experiments to reveal the nature of the emergent magnetism. | Session 29: Magnetic Interactions at Complex Oxide Interfaces |
| 347 | Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures | Skoropata, Elizabeth; Nichols, John; Ok, Jong Mok; Chopdekar, Rajesh; Choi, Eun Sang; Rastogi, Ankur; Sohn, Changhee; Gao, Xiang; Farmer, Thomas; Desautels, Ryan; Choi, Yongseong; Haskel, Daniel; Freeland, John; Okamoto, Satoshi; Brahlek, Matthew; Lee, Ho Nyung | I will describe how the interfacial atomic layer stacking and symmetry enabled by the nonmagnetic A-sites determine the competition between collinear and chiral magnetic interactions originating from the oxide interface. | Session 29: Magnetic Interactions at Complex Oxide Interfaces |
| 348 | Spin to charge conversion in the topological insulator HgTe and in STO-based two-dimensional electron gas | Attane, Jean-Phillippe; Vila, Laurent; Noël, Paul; Cosset-Cheneau, Maxen; Grèzes, Cécile; Bibes, Manuel; Vaz, Diogo; Trier, Felix | In this contribution, we report the observation of spin-to-charge current conversion in strained mercury telluride, using spin pumping experiments at room temperature. | Session 29: Magnetic Interactions at Complex Oxide Interfaces |
| 349 | Anomalous Nernst and Seebeck coefficients in epitaxial thin film Co2MnAlxSi1-x | Yu, Han; Breidenbach, Aaron; Peria, William; Peterson, Timothy; McFadden, Anthony; Palmstrom, Chris; Crowell, Paul | As a result of the high sensitivity to the Weyl points near the Fermi level, we propose α xyA as a helpful tool to capture Weyl points that are too far from the Fermi level to produce significant effect in the anomalous Hall conductivity. | Session 30: Magnetic Materials and Properties |
| 350 | Epitaxial Cr: An Electrically Conductive Transverse-Spin-Current Reflector | Lim, Youngmin; Srivastava, Abhishek; Nepal, Bhuwan; Wu, Shuang; Smith, David; Jiang, Zijian; Klewe, Christoph; Shafer, Padraic; Li, Jie-Fang; Viehland, Dwight; Mewes, Claudia; Heremans, Jean; Mewes, Tim; Emori, Satoru | We report evidence of conductive epitaxial (epi-) Cr (resistivity ~ 30 µΩ*cm) acting as a reflector of transverse spin current. | Session 30: Magnetic Materials and Properties |
| 351 | Chemical substitution induced half-metallicity in CrMnSb(1-x)Px | O’Leary, Evan; Ramker, Adam; VanBrogen, Devon; Dahal, Bishnu; Montgomery, Eric; Poddar, Shashi; Kharel, Parashu; Stollenwerk, Andrew; Lukashev, Pavel | We report results of a computational work on the half-Heusler compound CrMnSb (1-x)P x. | Session 30: Magnetic Materials and Properties |
| 352 | Magnetic and Transport Properties of Mn1+xZn1-xSb (0 < x < 1) Md Rafique Un Nabi, Aaron Wegner, Rabindra Basnet, Krishna Pandey, Gokul Acharya, Jin Hu | Nabi, Md Rafique Un | Magnetic and Transport Properties of Mn1+xZn1-xSb (0 < x < 1) Md Rafique Un Nabi, Aaron Wegner, Rabindra Basnet, Krishna Pandey, Gokul Acharya, Jin Hu | Session 30: Magnetic Materials and Properties |
| 353 | Lattice Softening in Metastable bcc CoxMn100-x(001) Ferromagnetic Layers for a Strain-Free Magnetic Tunnel Junction | Elphick, Kelvin; Yoshida, Kenta; Roy, Tufan; Ichinose, Tomohiro; Kunimatsu, Kazuma; Tsuchiya, Tomoki; Tsujikawa, Masahito; Nagai, Yasuyoshi; Mizukami, Shigemi; Shirai, Masafumi; Hirohata, Atsufumi | We have developed an almost strain-free magnetic tunnel junction (MTJ) using metastable bcc Co xMn 100-x (CoMn) ferromagnetic films to reveal the reason. | Session 30: Magnetic Materials and Properties |
| 354 | Electronic structure and magnetic properties of Mn1+xPt1-xSb (0 ≤ x ≤ 0.5) | Maruf, Abdullah Al; Valloppilly, Shah; Shand, Paul; Lukashev, Pavel; Kharel, Parashu | In this presentation, we will discuss the results from our theoretical and experimental investigations including electronic band structure, structural and magnetic properties of Mn 1+xPt 1-xSb compounds. | Session 30: Magnetic Materials and Properties |
| 355 | Anisotropic change in the crystal structure across the valence state transition in EuPd2Si2 | Mardani, Masoud; Sharma, Shivani; Nelson, William; Baumbach, Ryan; Siegrist, Theo | Anisotropic change in the crystal structure across the valence state transition in EuPd2Si2 | Session 30: Magnetic Materials and Properties |
| 356 | Voltage-induced ferromagnetism in diamagnetic FeS2 | Walter, Jeff; Voigt, Bryan; Day-Roberts, Ezra; Heltemes, Kei; Fernandes, Rafael; Birol, Turan; Leighton, Chris | Here, we provide proof-of-principle that ferromagnetism can be voltage-induced even from a diamagnetic, i.e., zero-spin state, suggesting that useful magnetic phases could be electrically-induced in “non-magnetic” materials [1]. | Session 30: Magnetic Materials and Properties |
| 357 | Evidence of multiple magnetic phases in the Van der Walls ferromagnet CrI3 | Meseguer-Sánchez, Jaume; Guguchia, Zurab; Navarro-Moratalla, Efren; Santos, Elton | Combining muon spin rotation (μSR) and superconducting quantum interference device (SQUID) measurements, we reveal the presence of multiple magnetic phase transitions of different nature, suggesting that the ferromagnetic transition transcends the classical concept of long-range order. | Session 30: Magnetic Materials and Properties |
| 358 | Voltage Gated Toggling of Exchange Bias in GdCo/NiO Thin Film Heterostructures | Hasan, Muhammad Usama; Zehner, Jonas; Huang, Mantao; Leistner, Karin; Beach, Geoffrey | Here we show that, when a GdCo/NiO bilayer with out of plane magnetization is loaded/unloaded with hydrogen, the expected switching of the dominant sublattice in GdCo is accompanied by a flipping of the effective EB direction as well. | Session 30: Magnetic Materials and Properties |
| 359 | Dynamic Phase Transitions in Ferromagnetic Thin Films with Different Curie Temperatures | Marin Ramirez, Juan; Campillo, Gloria; Osorio, Jaime; Arnache, Oscar; Berger, Andreas | Therefore, here we study experimentally the dynamic magnetic behavior for a suitable series of samples that have different T/T c ratios, to explore their role in the vicinity of the DPT by means of a magneto-optical Kerr effect based detection scheme. | Session 30: Magnetic Materials and Properties |
| 360 | Novel Mn-based Magnetic Material with Strong Spin-Orbit Coupling | Dissanayaka Mudiyanselage, Ranuri; Gui, Xin; Kong, Tai; Xie, Weiwei | Novel Mn-based Magnetic Material with Strong Spin-Orbit Coupling | Session 30: Magnetic Materials and Properties |
| 361 | Room-Temperature Magnetic Bistability in Epitaxial Fe0.52Rh0.48/MgO(001) Film Grown by Molecular Beam Epitaxy and Its Application in Rewritable Magnetic Patterning | Tang, Yongjian; Mei, Antonio; Gray, Isaiah; Fuchs, Gregory; Schlom, Darrell; Ralph, Daniel | By utilizing molecular beam epitaxy as a tool to controllably tune the chemical composition of Fe 1-xRh x thin films, we have systematically investigated the magnetic transition as a function of x. Rhodium deficient films have a lower transition temperature T c compared to stoichiometric film. | Session 30: Magnetic Materials and Properties |
| 362 | Evidence of phase separation in a (La,Pr,Ca)MnO3 thin film by ferromagnetic resonance. | Carranza-Celis, Diego; Skoropata, Elizabeth; Biswas, Amlan; Fitzsimmons, Michael; Schuller, Ivan; Ramirez, Juan | Here we report ferromagnetic resonance (FMR) and transport measurements on a LPCMO thin film across the FPS to SPS transition. | Session 30: Magnetic Materials and Properties |
| 363 | Non-collinear Effects and Substrate-mediated Magnetic Interactions in Mn trimers on the GaN (000-1) Surface | Hunt, Diego; Barral, Maria Andrea; Ferrari, Valeria; Smith, Arthur | We estimate the magnetic anisotropy energy (MAE), and we find that in the case of Mn dimers, the exchange magnetic coupling is the dominant interaction, and that the ground state has the Mn spins in-plane with the GaN(000-1) substrate. | Session 30: Magnetic Materials and Properties |
| 364 | Skyrmions and emergent electromagnetic responses in frustrated itinerant magnets | Tokura, Yoshinori | Skyrmions and emergent electromagnetic responses in frustrated itinerant magnets | Session 31: Magnetic Skyrmions in Novel Itinerant Magnets |
| 365 | Skyrmion crystal from RKKY interaction mediated by 2D electron gas | Batista, Cristian | We consider a C$_6$ invariant lattice of magnetic moments coupled via a Kondo exchange $J$ with a 2D electron gas (2DEG). | Session 31: Magnetic Skyrmions in Novel Itinerant Magnets |
| 366 | Zero-field magnetic skyrmions in model-type systems studied with STM | Von Bergmann, Kirsten | We have studied the magnetic properties of a Rh/Co atomic bilayer on Ir(111) using spin-resolved scanning tunneling microscopy. | Session 31: Magnetic Skyrmions in Novel Itinerant Magnets |
| 367 | Quantum skyrmions in frustrated ferromagnets | Rosch, Achim; Lohani, Vivek; Hickey, Ciaran; Masell, Jan | We develop [1] a quantum theory of magnetic skyrmions and antiskyrmions in a spin-1/2 Heisenberg magnet with frustrating next-nearest neighbor interactions. | Session 31: Magnetic Skyrmions in Novel Itinerant Magnets |
| 368 | Stabilization and observation of zero-field skyrmions in ferromagnetic and synthetic antiferromagnetic systems | Cros, Vincent; Ajejas, Fernando; Legrand, William; Sassi, Yanis; Collin, Sophie; Bouzehouane, Karim; Reyren, Nicolas; Fert, Albert; Finco, Aurore; Haykal, Angela; Tanos, Rana; Fabre, Florentin; Robert-Philipp, Isabel; Jacques, Vincent; Devolder, Thibaut; Kim, Joo-Von | Here we show that inserting a bias layer and utilizing interlayer electronic coupling, we successfully stabilize sub 100 nm skyrmions at zero field. | Session 31: Magnetic Skyrmions in Novel Itinerant Magnets |
| 369 | Stability and formation of skyrmion in ferromagnetic nanodots ~20 nm lateral dimensions with high Ms and moderate DMI | Rajib, Md Mahadi; Misba, Walid Al; Bhattacharya, Dhritiman; Atulasimha, Jayasimha | In this study, we show with micromagnetic simulation that small ferromagnetic skyrmion ~20 nm size in patterned nanostructures can be formed by increasing M s for experimentally available DMI, as opposed to following the trend of lowering M s and forming small skyrmion in ferrimagnetic racetrack/infinite films. | Session 32: Magnetic Spin Textures |
| 370 | Extended Exchange Interactions in Cr1/3NbS2, MnBi, and VTe: What is Nature saying? | Parker, David | Here I present evidence from 3 recent theoretical studies that find evidence, generally supported by relevant experimental data, for substantial exchange interactions even at interatomic distances approaching 6 Angstroms, where one would ordinarily expect such exchange interactions to be minimal. | Session 32: Magnetic Spin Textures |
| 371 | Antiferromagnetism of Fe1/3NbS2 as Characterized by Resonant Ultrasound Spectroscopy | Lewin, Sylvia; Perko-Engel, Gabriel; Haley, Shannon; Maniv, Eran; Analytis, James | We have used resonant ultrasound spectroscopy to further characterize the antiferromagnetism of Fe 1/3NbS 2. | Session 32: Magnetic Spin Textures |
| 372 | Measurements of a novel magnetically induced structural phase in CoPS3 | Mai, Thuc; Garrity, Kevin; Susner, Michael; Conner, Benjamin; McCreary, Amber; McGuire, Michael; Hight Walker, Angela | In CoPS 3, a vdW material with antiferromagnetic ordering around 130 K, we perform magneto-Raman spectroscopy, magnetometry, calorimetric, and X-ray diffraction as a function temperature to reveal a new magnetically induced structural phase transition. | Session 32: Magnetic Spin Textures |
| 373 | A general, microscopic model of B20 magnets | Hall, Kyle; Curnoe, Stephanie | In contrast to the standard continuum model used to describe these materials, we introduce a general, symmetry-invariant, microscopic model of nearest-neighbour exchange interactions constructed through group theoretical means. | Session 32: Magnetic Spin Textures |
| 374 | Rich Phase Behaviors in Kitaev Honeycomb Magnet Na2Co2TeO6 | Chen, Wenjie; Li, Xintong; Hu, Zhenhai; Yue, Li; Sutarto, Ronny; He, Feizhou; Iida, Kazuki; Kamazawa, Kazuya; Lin, Xi; Li, Yuan | After performing a combination of spectroscopic and thermodynamic measurements on single crystals of this material, we found that Na2Co2TeO6, surprisingly, goes through several distinct phase transitions at low temperatures and in zero magnetic field. | Session 32: Magnetic Spin Textures |
| 375 | Phonon-assisted Formation of Spin Density Wave Order in Cr Thin Film | Li, Jiaruo; Gorobtsov, Oleg; Patel, Sheena; Hua, Nelson; Gregory, Benjamin; Shabalin, Anatoly; Medapalli, Rajasekhar; Hrkac, Stjepan; Wingert, Jim; Cela, Devin; Glownia, James; Chollet, Matthieu; Zhu, Diling; Fullerton, Eric; Shpyrko, Oleg; Singer, Andrej | In this talk, we will discuss how the formation of SDW in antiferromagnetic Cr thin film after its quench by a femtosecond (fs) laser is influenced by an acoustic phonon launched by the laser. | Session 32: Magnetic Spin Textures |
| 376 | Real-space Observation of Ferroelectrically Induced Magnetic Spin Crystal in SrRuO3 | Seddon, Samuel; Dogaru, Daniela; Holt, Sam; Rusu, Dorin; Peters, Jon; Sanchez-Fuentes, Ana; Alexe, Marin | We have constructed an SrRuO 3-PbTiO 3 (Ferromagnetic–Ferroelectric) bilayer that exhibits features in the Hall Hysteresis previously attributed to a Topological Hall Effect (THE), and Skyrmions. | Session 32: Magnetic Spin Textures |
| 377 | Signature of defect-induced symmetry breaking in magnetic neutron scattering | Michels, Andreas | Our study proves the generic relevance of the DMI for the magnetic microstructure of defect-rich ferromagnets. | Session 32: Magnetic Spin Textures |
| 378 | Microscopic magnetic Hamiltonian for exotic spin textures in metals | Kathyat, Deepak; Mukherjee, Arnob; Kumar, Sanjeev | We validate the spin Hamiltonian by comparing results with those on the exact spin-fermion model, and present its phase diagram using large-scale Monte Carlo simulations. | Session 32: Magnetic Spin Textures |
| 379 | Berry-Phase Curvature and Hall Effect in Co Nanoparticles | Ullah, Ahsan; Balasubramanian, Balamurugan; Pahari, Rabindra; Skomski, Ralph; Sellmyer, David | We investigate the Berry-phase behavior of dense ensembles of Co nanoparticles using experiments and micromagnetic simulations. | Session 32: Magnetic Spin Textures |
| 380 | Sensing chiral spin orders with entangled neutrons | Irfan, Abu Ashik Md.; Ortiz, Gerardo | We present a quantum entangled-probe scattering framework that extends van Hove’s standard scattering theory, and apply it to directly unveil chiral spin orders. | Session 32: Magnetic Spin Textures |
| 381 | Monte Carlo studies of (T, H) phase diagram of quasi-2D skyrmion systems: Role of magnetic anisotropy | Wu, Po-Kuan; Randeria, Mohit | We present detailed MC results comparing these two cases, focusing on topological charge density, skyrmion size, and orientational order of the 2D skyrmion crystal phase. | Session 32: Magnetic Spin Textures |
| 382 | Magnetic phase diagram of two-leg ladder iron-based systems: Exact numerical results | Sroda, Maksymilian; Dagotto, Elbio; Herbrych, Jacek | Motivated by growing experimental evidence of exotic magnetism in low-dimensional iron-based systems, we study the magnetic phases of the multi-orbital Hubbard ladder in the orbital-selective Mott phase. | Session 32: Magnetic Spin Textures |
| 383 | Estimation of magnetic parameters from domain images with convolutional neural networks | Kong, Jian Feng; Ren, Yuhua; Chen, Xiaoye; Tey, Nicholas; Ho, Pin; Chirila, Constantin Ciprian; Ng, Nathaniel; Khoo, Khoong Hong; Soumyanarayanan, Anjan | We show that deep convolutional neural networks are able to extract magnetic parameters such as the exchange interaction, Dzyaloshinskii-Moriya interaction, and uniaxial anisotropy from images of domain configurations. | Session 32: Magnetic Spin Textures |
| 384 | Reversal mechanisms in cylindrical magnetic nanowires | Stadler, Bethanie | Reversal mechanisms in cylindrical magnetic nanowires | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 385 | Strain Mediated Magneto-Electric Effects in coaxial nanofibers of Y or W type hexagonal ferrites and ferroelectric PZT or Barium Titanate | Liu, Ying; Zhang, Wei; Srinivasan, Gopalan | Strain Mediated Magneto-Electric Effects in coaxial nanofibers of Y or W type hexagonal ferrites and ferroelectric PZT or Barium Titanate | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 386 | Spin Distributions in Fe3O4@CoxZn1-xFe2O4 Core-Shell Nanoparticles | Kons, Corisa; Attanayake, Supun; Krycka, Kathryn; Borchers, Julie; Das, Raja; Phan, Manh-Huong; Srikanth, Hariharan; Arena, Dario | In this work, CS MNPS consisting of an Fe 3O 4 core and a Zn-doped CoFe 2O 4 shell are studied with polarization analyzed small angle neutron scattering (SANS) in order to explore magnetic properties and spin coupling as a function of doping concentration. | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 387 | Disorder Dissipation in Superparamagnetic Nanoparticle Chains Assembled in a Rotating Magnetic Field | Robinson, Hans; He, Zhixing | Theories applicable to both limits qualitatively describe the observed chain length distribution, except that chains are significantly shorter than in either limit. | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 388 | Exploiting Spin Interaction in Magnetic Nanoparticles to Improve Magnetic Thermosensitivity and AC Field Response | Biacchi, Adam; Bui, Thinh; De Lima Correa, Eduardo; Dennis, Cindi; Woods, Solomon; Hight Walker, Angela | The technique employs MNPs to measure and image temperature remotely with high spatial resolution throughout a 3D volume. | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 389 | Magnetic Microparticle Transport on Disk Arrays in Time-Varying Magnetic Fields: Simulation and Experiment | Vieira, Gregory; Hoang, Chris; Howard, Eliza | Our model predicts limitations to particle speed due to phase-slipping motion, describes how transport depends on particle size, and suggests a means for estimating low-field magnetic susceptibilities of individual particles. | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 390 | Magnetic Neutron Scattering of Nanoparticles: Failure of The Superspin Model | SINAGA, Evelyn; Vivas, Laura; Hasdeo, Eddwi; Bender, Philipp; Michels, Andreas | It is known that beyond a certain size magnetic nanoparticles exhibit a nonuniform internal spin structure.This feature, which is of relevance for many problems of practical interest (e.g., biomedical imaging and drug delivery), is commonly ignored when it comes to the analysis of magnetic neutron scattering data on nanoparticle ensembles.By means of numerical micromagnetic computations we study the transition from single-domain to multi-domain behavior in nanoparticles and its implications for the ensuing elastic magnetic small-angle neutron scattering (SANS) cross-section. | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 391 | Emergence of Magnetic Field-Modulated Negative Magnetoresistance in Manganese Phosphide Nanorod Thin Films | Muchharla, Baleeswaraiah; Madhogaria, Richa; Hung, Chang-Ming; Duong, Anh; Pham, Huy; Witanachchi, Sarath; Phan, Manh-Huong | Here we report the temperature dependent charge and spin transport properties of a MnP nanorod thin film over a wide temperature range (2 K < T < 350 K). | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 392 | Effect of Demagnetization Technique on Remanence Measurements in Metallic Ferromagnets | Freedberg, Jennifer; Dahlberg, E. Dan | Effect of Demagnetization Technique on Remanence Measurements in Metallic Ferromagnets | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 393 | Structure and Magnetism of Fe/Fe3C Nanoparticles in Carbon Spheres | Gyulasaryan, Harutyun; Papadopoulou, Elisavet; Tetos, Nikolaos; Chilingaryan, Gayane; Spasova, Marina; Farle, Michael; Manukyan, Aram; Myrovali, Eirini; Angelakeris, Makis; Castillo, Kevin; Bernal, Oscar; Kocharian, Armen | Structure and Magnetism of Fe/Fe3C Nanoparticles in Carbon Spheres | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 394 | Altering Magnetic Properties of Iron Filament PLA Using Magnetic Field Assisted Additive Manufacturing Lauren Henderson1, Tanjina N. Ahmed2, Camila Belduque3, Jitendra Tate2,3, Maggie Chen2,4 and Wilhelmus J. Geerts1,2 1. Depart | Henderson, Lauren; Ahmed, Tanjina; Belduque, Maria Camila; Tate, Jitendra; Chen, Maggie; Geerts, Wilhelmus | In this research, the magnetic properties of 3D samples printed in a magnetic field were explored, referred to as Magnetic Field Assisted Additive Manufacturing (MFAAM), where a magnetic field is applied to a material during printing. | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 395 | Demonstration of additively manufactured NdFeB PPS Halbach magnets to generate variable magnetic fields for neutron reflectometry | Lamichhane, Tej; Charlton, Timothy; Andrews, Brian; Pathak, Arjun; Doucet, M.; Lauter, Valeria; Katsaras, John; Post, Brian; Paranthaman, Mariappan | We utilized the fused deposition modeling-based Big Area Additive Manufacturing technology to print customized, compensated concentric Halbach array discs, using polyphenylene sulfide -bonded NdFeB permanent magnets for polarized neutron reflectometry. | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 396 | Torque measurements of Strontium Ferrite/PA12 composite filaments and 3D printed samples printed in a magnetic field | Ahmed, Tanjina Nasreen; Belduque, Maria Camila; Tate, Jitendra; Geerts, Wilhelmus | In this study, magnetic filaments are made by adding 5wt% and 26wt% of SrO(Fe 2O 3) 6 powders into Nylon-12 using a co-rotating twin-screw extruder. | Session 33: Magnetic Structures: Nanowires, Nanoparticles & Additive Manufacturing |
| 397 | Scanning Tunneling Microscopy and Spectroscopy of MnBi2Te4 | Plumadore, Ryan; Zhu, Yanglin; Guan, Yingdong; Lee, Seng Huat; Mao, Zhiqiang; Luican-Mayer, Adina | In this talk we discuss low-temperature scanning tunneling microscopy and spectroscopy measurements of MnBi 2Te 4. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 398 | Characterization of the Layered Antiferromagnetic Topological Insulator MnBi2Se4 Using Scanning Tunneling Microscopy | Walko, Robert; Zhu, Tiancong; Bishop, Alexander; Kawakami, Roland; Gupta, Jay | We used scanning tunneling microscopy to study a 20 SL MBS film grown using molecular beam epitaxy and observed two distinct surface terminations, Se and Bi, which we characterized with scanning tunneling spectroscopy (STS) and differential conductance mapping. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 399 | Realisation of Wide Bandgap Quantum Anomalous Hall Insulator in Ultra-thin MnBi2Te4 and Bi2Te3 Heterostructures | Li, Qile; Trang, Chi Xuan; Wu, Weikang; Hwang, Jinwoong; Mo, Sung-Kwan; Medhekar, Nikhil; Yang, Shengyuan; Edmonds, Mark | 2 Here we demonstrate the growth of 1SL MnBi 2Te 4 and 4QL Bi 2Te 3 heterostructures via MBE, and probe the electronic structure using angle resolved photoelectron spectroscopy. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 400 | Ferromagnetism and anomalous Hall effect in MnBi6Te10 | Zhu, Yanglin; Mao, Zhiqiang | In this talk, we report the successful growth of FM Mn(Bi 1-xSb x) 6Te 10 ( x = 0, 0.08, 0.12, 0.3) crystals. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 401 | Realizing gapped surface states in the magnetic topological insulator MnBi2-xSbxTe4 | Ko, Wonhee; Kolmer, Marek; Yan, Jiaqiang; Pham, Anh; Fu, Mingming; Luepke, Felix; Okamoto, Satoshi; Ganesh, Panchapakesan; Gai, Zheng; Li, An-Ping | By shifting the Fermi level into the bulk band gap, we access the surface states and show a band gap of 50 meV at the Dirac point from quasiparticle interference measured by scanning tunneling microscopy (STM). | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 402 | Spin waves in the antiferromagnetic topological insulators MnBi2Te4 and MnBi4Te7 | Li, Bing; Ke, Liqin; Riberolles, Simon; Pajerowski, Daniel; Kreyssig, Andreas; Ueland, Benjamin G.; Yan, Jiaqiang; McQueeney, Robert J. | Here we present our inelastic neutron scattering (INS) study on single crystals MnBi 2Te 4 and MnBi 4Te 7. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 403 | Layer-dependent phonons in the magnetic topological insulator MnBi2Te4 | Choe, Jeongheon; Lujan, David; Rodriguez-vega, Martin; Ye, Zhipeng; Quan, Jiamin; Leonardo, Aritz; Nunley, Timothy; Yan, Jiaqiang; Fiete, Gregory; He, Rui; Li, Xiaoqin (Elaine) | We applied Raman spectroscopy to investigate lattice vibrational modes in the magnetic topological insulator MnBi 2Te 4 with thicknesses ranging from 1 to 5 septuple layers. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 404 | Competing magnetic interactions in MnBi4Te7 | Guan, Yingdong; Ning, Wei; Lee, Seng Huat; Mao, Zhiqiang | In this talk, we will show a ferromagnetic (FM) phase with T C~14 K can be realized with a small concentration substitution of Sb for Bi in Mn(Bi,Sb) 4Te 7. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 405 | Probing magnetic orders in atomically thin Chern insulator MnBi2Te4 | Lin, Zhong; Ovchinnikov, Dmitry; Huang, Xiong; Fei, Zaiyao; Cai, Jiaqi; Song, Tiancheng; He, Minhao; Jiang, Qianni; Wang, Chong; Li, Hao; Wang, Yayu; Wu, Yang; Xiao, Di; Chu, Jiun-Haw; Yan, Jiaqiang; Chang, Cui-Zu; Cui, Yongtao; Xu, Xiaodong | In this work, we probe the intrinsic magnetism of atomically thin MnBi 2Te 4 samples by reflective magnetic circular dichroism (RMCD), and correlate their magnetic order with transport measurements. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 406 | The induced axion-phason field in Weyl semimetals | Schmeltzer, David; Saxena, Avadh | This theory, for a Weyl semimetal with two nodes in the direction of the magnetic field, gives rise to a one-dimensional sliding charge-density-wave (CDW) when the chemical potential is above the highest occupied Landau level (in the insulating phase), and is absent in the metallicphase. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 407 | Axion insulator and helical Chern insulator phases in MnBi2Te4 | Wang, Yayu | In this talk, we report transport studies of exfoliated MnBi 2Te 4 flakes with varied layer structure and magnetic fields. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 408 | Quantum Transport on MnBi2Te4 Thin Films Grown on Sapphire | Akhgar, Golrokh; Liu, Chang; Li, Qile; Fuhrer, Michael; Edmonds, Mark | 1 Here, we report the growth of ultra-thin MnBi 2Te 4 on sapphire by molecular beam epitaxy. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 409 | Magnetic Phase Transitions and the Origin of Anomalous Hall Effect on MnBi2Te4 Grown by MBE | Bac, Seul-Ki; Riney, Logan; Wang, Jiashu; Koller, Kerrie; Liu, Xinyu; Zhukovskyi, Maksym; Orlova, Tatyana; Dobrowolska, Malgorzata; Furdyna, J; Assaf, Badih | Here we report on the magnetic properties of MnBi 2Te 4 grown by MBE with various thicknesses. | Session 34: Magnetic Topological Materials 1: Mn-Bi-Te |
| 410 | Intertwined Topological and Magnetic Orders in Atomically Thin Chern Insulator MnBi2Te4 | Ovchinnikov, Dmitry; Huang, Xiong; Lin, Zhong; Fei, Zaiyao; Cai, Jiaqi; Song, Tiancheng; He, Minhao; Jiang, Qianni; Wang, Chong; Li, Hao; Wang, Yayu; Wu, Yang; Xiao, Di; Chu, Jiun-Haw; Yan, Jiaqiang; Chang, Cui-Zu; Cui, Yongtao; Xu, Xiaodong | In this work by combination of magnetic circular dichroism, transport, and microwave impedance measurements (MIM) we investigate connection between bulk electronic structure, topological order, and magnetic states in thin flakes of MnBi 2Te 4. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 411 | Quantum Oscillations in the Field-Induced Ferromagnetic State of MnBi2-xSbxTe4 | Jiang, Qianni; Wang, Chong; Malinowski, Paul; Liu, Zhaoyu; Shi, Yue; Lin, Zhong; Fei, Zaiyao; Song, Tiancheng; Graf, David; Chikara, Shalinee; Xu, Xiaodong; Yan, Jiaqiang; Xiao, Di; Chu, Jiun-Haw | Here, we present Shubnikov–de Haas oscillations of MnBi 2-xSb xTe 4 in a wide range of Sb concentrations close to the charge neutrality point (0.33 ≤ x ≤ 1.21) in the FM state. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 412 | Ferromagnetic MnSb2Te4: A p-type topological insulator with magnetic gap closing at high Curie temperatures of 45-50 K | Rader, Oliver; Wimmer, S.; Sánchez-Barriga, J.; Küppers, P.; Ney, A.; Schierle, Enrico; Freyse, F.; Caha, O.; Michalicka, J.; Liebmann, M.; Primetzhofer, D.; Hoffmann, M.; Ernst, A.; Otrokov, Mikhail; Bihlmayer, Gustav; Weschke, Eugen; Lake, Bella; Chulkov, Eugene; Morgenstern, Markus; Bauer, Guenther; Springholz, G. | We identify the influences of structural and magnetic disorder that render MnSb 2Te 4 the ideal system for tuning electric and magnetic properties of quantum anomalous Hall systems. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 413 | Coexistence of a Gapless Topological State and Surface Ferromagnetism in MnBi2Te4 | Nevola, Daniel; Li, Haoxiang; Yan, Jiaqiang; Moore, Robert; Lee, Ho Nyung; Miao, Hu; Johnson, Peter | We use both static and time resolved ARPES to show that bulk magnetism does extend to the surface of MnBi 2Te 4. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 414 | Absence of Correlation Between Carrier Type and Magnetic Properties of MnBi2Te4 | Koller, Kerrie; Bac, Seul-Ki; Liu, Xinyu; Riney, Logan; Wang, Jiashu; Powers, William; Zhukovskyi, Maksym; Orlova, Tatyana; Dobrowolska, Malgorzata; Furdyna, Jacek; Assaf, Badih | Here we investigate the magnetic properties of MnBi 2Te 4 samples with n-type and p-type carriers grown by molecular beam epitaxy. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 415 | Neutron diffraction study of magnetism in van der Waals layered MnBi2nTe3n+1 | DING, LEI; Hu, Chaowei; Feng, Erxi; Chi, Miaofang; Ni, Ni; Cao, Huibo | We present a systematic investigation of the crystal structure and magnetism of MnBi 2nTe 3n+1 (n = 1, 2, 3, 4) which have been recently found to be intrinsic magnetic topological insulators. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 416 | Giant photogalvanic effect and second-harmonic generation in magnetic axion insulators | Fei, Ruixiang; Song, Wenshen; Yang, Li | Combining quantum perturbation theory and first-principles simulation, we predict giant nonlinear optical responses (NLOs) in even septuple layers of MnBi 2Te 4 family materials (MBTs), which are the zero-plateau quantum anomalous Hall systems (QAHs). | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 417 | Magnetic structure evolution of the Mn(Bi,Sb)2Te4 family of intrinsic magnetic topological insulators | Heikes, Colin; Quarterman, Patrick; Chen, Yangyang; Chuang, Ya-Wen; Lee, Seng Huat; Zhu, Yanglin; Honz, Kevin; Guan, Yingdong; Wang, Yu; Wang, Ke; Mao, Zhiqiang; Zhu, Jun; Zajdel, Pawel; Borchers, Julie; Ratcliff, William | We will present structural and magnetic neutron scattering measurements and other magnetic characterization of the Mn(Bi,Sb) 2Te 4 family of compounds to clarify this evolution. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 418 | Switching on ferromagnetic coupling by Mn/Sb antisite disorder in Mn(Bi1-xSbx)4Te7 | Hu, Chaowei; Mackey, Scott; Ni, Ni | We present a continuous control of the interlayer magnetic coupling in the newly-discovered intrinsic topological insulator MnBi 4Te 7 by Sb-doping. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 419 | Strongly Gapped Topological Surface States in MnBi2Te4(Bi2Te3)n Family | Gordon, Kyle; Hu, Chaowei; Sun, Hongyi; Linn, Garrison; Berggren, Bryan; Chang, Tay-Rong; Liu, Qihang; Ni, Ni; Dessau, Daniel | In this talk, we present Angular Resolved Photoemission Spectroscopy (ARPES) experiments on MnBi 4Te 7, MnBi 6Te 10, and MnBi 8Te 13, demonstrating the topological nature of each material. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 420 | Magnetic topological properties of MnBi2Te4 tuned by electric coupling | Luo, Wei; Du, Maohua; Reboredo, Fernando; Yoon, Mina | We propose a mechanism to control its electronic, magnetic and topological properties by electric field. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 421 | Electronic structure and magnetic properties of MnBi2Te4 and MnSb2Te4 | Lee, Yongbin; McQueeney, Robert; Ke, Liqin | Using ab initio methods and atomic spin dynamics, we investigate the electronic structure and magnetism in MnBi 2Te 4 and MnSb 2Te 4. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 422 | Coupling of topology and magnetic ordering in Axion Insulator and Weyl semimetal phases of MnB2X4 (A = Sb, Bi; X = Se, Te) | Chowdhury, Sugata; Garrity, Kevin; McCreary, Amber; Hight Walker, Angela; Tavazza, Francesca | We find that the direction of magnetic moment and the magnetic properties depend on the choice of chalcogenide, while the choice of B atom modifies the amount of band inversion. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 423 | Experimental evidence of the field-induced Weyl state in Mn(Bi1-xSbx)2Te4 | Lee, Seng Huat; Graf, David; Zhu, Yanglin; Yi, Hemian; Ciocys, Samuel; Choi, Eun Sang; Basnet, Rabindra; Fereidouni, Arash; Wegner, Aaron; Zhao, Yifan; Min, Lujin; Verlinde, Katrina; He, Jingyang; Redwing, Ronald; Gopalan, Venkatraman; Churchill, Hugh; Lanzara, Alessandra; SAMARTH, NITIN; Chang, Cui-Zu; Mao, Zhiqiang | In this talk, we report the experimental evidence of the field-induced Weyl state in Mn(Bi 1-xSb x) 2Te 4 6. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 424 | Analytical solution to the surface states of antiferromagnetic topological insulator MnBi2Te4 | Sun, Hai-Peng; Wang, Chunming; Zhang, Songbo; Chen, Rui; Lu, Haizhou; Xie, X. C. | To address this issue, we analytically derive an effective model for the 2D surface states by starting from a 3D Hamiltonian for bulk MnBi 2Te 4 and taking into account the spatial profile of the bulk magnetization. | Session 35: Magnetic Topological Materials 2:Mn-Bi-Te |
| 425 | Nonreciprocal charge transport at magnetic topological insulator interfaces | Yasuda, Kenji; Morimoto, Takahiro; Yoshimi, Ryutaro; Mogi, Masataka; Tsukazaki, Atsushi; Kawamura, Minoru; Takahashi, Kei; Kawasaki, Masashi; Nagaosa, Naoto; Tokura, Yoshinori | In this talk, we will introduce another example of exotic transport in magnetic topological insulators: nonreciprocal charge transport, where the sample’s resistance depends on the current direction [1]. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 426 | Interfacing topological insulators and ferrimagnets: Bi2Te3 and Fe3O4 heterostructures grown by molecular beam epitaxy | Mota Pereira, Vanda; Wu, Chi-Nan; Knight, Cariad-A.; Choa, Arnold; Tjeng, Liu; Altendorf, Simone | We find the heterostructure Bi 2Te 3 on Fe 3O 4 to be a more viable approach, with transport signatures in agreement with a gap opening in the topological surface states. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 427 | Magnetic Weyl semimetal emerging from non-magnetic doping | Carnevali, Virginia; Obeysekera, Dimuthu; Supka, Andrew; Dela Cruz, Clarina; Fornari, Marco; Yang, Junjie | Here we report the enhancement of FM component induced by non-magnetic doping and the emergence of magnetic Weyl states in SrMn 1-xZn xSb 2. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 428 | High-throughput search of magnetic topological insulators and semi-metals using spin-orbit spillage and machine-learning methods | Choudhary, Kamal; Garrity, Kevin | In this work, we use a systematic high-throughput density functional theory based computational workflow to identify possible intrinsic Chern insulators and semi-metals among 40000 three-dimensional materials in the JARVIS-DFT database (https://jarvis.nist.gov/jarvisbdft). | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 429 | Charge Density Waves as a Tool to Achieve Idealized Topological Semimetals | Lei, Shiming; Teicher, Samuel; Topp, Andreas; Cai, Kehan; Lin, Jingjing; Rodolakis*, Fanny; McChesney, Jessica; Krivenkov, Maxim; Marchenko, Dmitry; Varykhalov, Andrei; Ast, Christian; Car, Roberto; Cano, Jennifer; Garcia Vergniory, Maia; Ong, Nai; Schoop, Leslie | Here we introduce a new strategy to design nearly idealized topological semimetals, by taking advantage of a charge density wave (CDW) and non-symmorphic symmetry. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 430 | Topological surface currents accessed through reversible hydrogenation of the bulk | Deng, Haiming; Zhao, Lukas; Park, Kyungwha; Yan, Jiaqiang; Sobczak, Kamil; Krusin-Elbaum, Lia | Here we report a new hydrogenation approach resolving an outstanding challenge in chalcogenide classes of topological materials — the control of intrinsic bulk conduction — using an aqueous HCl solution rich in H +. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 431 | Quasi-Periodic Bulk-Boundary Correspondence and the 1D Metal-Insulator Transition | Borgnia, Dan; Slager, Robert-Jan; Vishwanath, Ashvin | Focusing on the almost-Matthieu operator (Andre-Aubry-Harper model) and its 1D Metal-Insulator Transition (MIT), we provide a novel approach to Barry Simon’s "Dry Ten Martini" problem in the singularly continuous regime. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 432 | Disentangling the magnetic proximity effect in topological insulators with Mg(Al,Fe)2O4/Bi2Se3 thin films | Riddiford, Lauren; Grutter, Alexander; Pillsbury, Timothy; Samarth, Nitin; Suzuki, Yuri | In this talk, we have studied heterostructures of the ferromagnetic insulator Mg(Al,Fe) 2O 4 and TI Bi 2Se 3 to explore a possible magnetic proximity effect. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 433 | Effect of dilute magnetism in a topological insulator | Kabir, Firoza; Hosen, Md Mofazzel; Ding, Xiaxin; Lane, Christopher; Dhakal, Gyanendra; Liu, Yangyang; Dimitri, Klauss; Sims, Christopher; Regmi, Sabin; Persaud, Luis; Liu, Yong; Pathak, Arjun; Zhu, Jian-Xin; Gofryk, Krzysztof; Neupane, Madhab | Our study shows that Gd doped Sb 2Te 3 is a spin-orbit-induced bulk band-gap material, whose surface is characterized by a single topological surface state. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 434 | Nanoscale synthesis and characterization of heterostructures coupling antiferromagnetic MnTe and topological insulator Bi2Te3 | LaFleur, Alexander; Rachmilowitz, Bryan; Zhao, He; Ren, Zheng; Li, Hong; Sharma, Shrinkala; Alamgir Tehrani, Nastaran; Zeljkovic, Ilija | Here, we use molecular beam epitaxy (MBE) to grow MnTe films, and bilayers of MnTe and prototypical topological insulator Bi2Te3. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 435 | Scanning SQUID Microscopy of the Quantum Anomalous Hall Effect | Ferguson, George; Xiao, Run; Low, David; Zhou, Ling-Jie; Richardella, Anthony; Chang, Cui-Zu; Samarth, Nitin; Nowack, Katja | We report magnetic imaging of Cr-doped (Bi,Sb) 2Te 3 heterostructures in the quantum anomalous hall regime. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 436 | Spontaneous ferromagnetism and finite surface energy gap in the topological insulator Bi2Se3 from surface BiSe antisite defects | Nahas, Suhas; Sanyal, Biplab; Black-Schaffer, Annica | We perform ab-initio calculations on Bi Se antisite defects in the surface of Bi 2Se 3, finding strong low-energy defect resonances with spontaneous ferromagnetism, fixed to an out-of-plane orientation due to an exceptionally large magnetic anisotropy energy. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 437 | The Rabbi Limit of Current Rectification in Solids | Matsyshyn, Oles; Piazza, Francesco; Moessner, Roderich; Sodemann, Inti | Employing a combination of the Keldysh technique and Floquet theory, we show that this is an artefact of perturbation theory and that there is a well-defined periodic steady-state akin to Rabbi oscillations leading to finite rectified currents in the clean limit. | Session 36: Magnetic Topological Materials 3: Doped Bi2Te3 |
| 438 | Tunneling into topological magnets: discovery of Chern and many-body phenomena | Yin, Jiaxin | Via spectroscopic Landau quantization and edge state imaging, we discover the Chern phase in TbMn6Sn6 [1]. | Session 37: Magnetic Topological Materials 4: STM |
| 439 | Visualizing Quantum Anomalous Hall States at the atomic scale with STM Landau Level Spectroscopy | Chong, Yi Xue; Liu, Xiaolong; Sharma, Rahul; Kostin, Andrey; Gu, Genda; Fujita, Kazuhiro; Davis, James; Sprau, Peter | Visualizing Quantum Anomalous Hall States at the atomic scale with STM Landau Level Spectroscopy | Session 37: Magnetic Topological Materials 4: STM |
| 440 | Magnetic and transport properties of topological semimetal candidate LnSbTe (Ln = Sm, Nd) | Pandey, Krishna; Basnet, Rabindra; Acharya, Gokul; Wegner, Aaron; Nabi, Md Rafique Un; Hu, Jin | Here, we report magnetic and transport properties of previously unexplored topological nodal line semimetal candidates NdSbTe and SmSbTe. | Session 37: Magnetic Topological Materials 4: STM |
| 441 | Anomolous transport above the magnetic transition temperature of magnetic Weyl Semimetal CeAlGe | Drucker, Nathan; Han, Fei; Nguyen, Thanh; Andrejevic, Nina; Nguyen, Quynh; Li, Mingda | We propose a mechanism for this new phase arising from the interaction between the Weyl fermions and fluctuating magnetic moments. | Session 37: Magnetic Topological Materials 4: STM |
| 442 | Quantum transport evidence of Weyl fermions in an epitaxial ferromagnetic oxide SrRuO3 thin film | Takiguchi, Kosuke; Wakabayashi, Yuki; Irie, Hiroshi; Krockenberger, Yoshiharu; Otsuka, Takuma; Sawada, Hiroshi; Nikolaev, Sergey; Das, Hena; Tanaka, Masaaki; taniyasu, yoshitaka; Yamamoto, Hideki | Here, we demonstrate the quantum transport evidence of the Weyl fermions in an epitaxial SrRuO 3 film with the best crystalline quality ever reported. | Session 37: Magnetic Topological Materials 4: STM |
| 443 | The Angular Dependence of Magnetoresistance in YMn6Sn6 | Siegfried, Peter; Mazin, Igor; Jones, David; Bhandari, Hari; Ghimire, Nirmal | Here we report signatures in the magnetoresistance indicating strong coupling between the magnetic structure and the electronic band structures. | Session 37: Magnetic Topological Materials 4: STM |
| 444 | Neutron diffraction studies on the magnetic structures of the topologically nontrivial itinerant kagome antiferromagnet, YMn6Sn6 | Dally, Rebecca; Ghimire, Nirmal; Jones, David; Michel, Dina; McGuire, Michael; Jiang, J; Mitchell, John; Lynn, Jeffrey; Mazin, Igor | Neutron diffraction studies on the magnetic structures of the topologically nontrivial itinerant kagome antiferromagnet, YMn6Sn6 | Session 37: Magnetic Topological Materials 4: STM |
| 445 | Scanning Tunneling Microscopy and Spectroscopy Investigation of a Kagome Magnet YMn6Sn6 | Li, Hong; Zhao, He; Wang, Qi; Yin, Qiangwei; Zhao, Ning-Ning; Liu, Kai; Wang, Ziqiang; Lei, Hechang; Zeljkovic, Ilija | We use low-temperature spectroscopic-imaging scanning tunneling microscopy (SI-STM) to investigate the surface structure and low energy electronic properties of a kagome magnet YMn 6Sn 6. | Session 37: Magnetic Topological Materials 4: STM |
| 446 | Spin-polarized scanning tunneling microscopy and quasiparticle interference imaging of the magnetic Weyl candidate CeBi | Liu, Yu; Matt, Christian; Pirie, Harris; Drucker, Nathan; Slager, Robert-Jan; Jo, Na Hyun; Kuthanazhi, Brinda; Budko, Sergey; Huang, Zhao; Lane, Christopher; Zhu, Jian-Xin; Canfield, Paul; Hoffman, Jenny | Here we focus on the ferrimagnetic and fully-polarized phases of CeBi, where our density functional theory (DFT) calculations predict several Weyl nodes near the Fermi level (EF). | Session 37: Magnetic Topological Materials 4: STM |
| 447 | Electronic structure and quantum oscillations of the kagome metal YMn6Sn6 | Ghimire, Nirmal; Siegfried, Peter; Mazin, Igor; Kyriazi, Eleni; Tutchton, Roxanne; Singleton, John | Here we present the calculated electronic structure of YMn 6Sn 6 along with de Haas-van Alphen and Shubnikov-de Haas oscillation data in magnetic fields of up to 60 T and temperatures down to 0.5 K. | Session 37: Magnetic Topological Materials 4: STM |
| 448 | Planar Schottky tunneling spectroscopy of antiferromagnetic kagome metal FeSn | Han, Minyong; Inoue, Hisashi; Fang, Shiang; John, Caolan; Ye, Linda; Chan, Mun; Graf, David; Suzuki, Takehito; Ghimire, Madhav; Cho, Won Joon; Kaxiras, Efthimios; Checkelsky, Joseph | We present measurements across a wide range of temperatures, barrier widths, and magnetic fields probing the underlying electronic structure. | Session 37: Magnetic Topological Materials 4: STM |
| 449 | First-principles study of Dirac fermions in the ferromagnetic kagome metal Fe3Sn2 | Fang, Shiang; Ye, Linda; Ghimire, Madhav; Kang, Min Gu; Comin, Riccardo; Kaxiras, Efthimios; Checkelsky, Joseph | Here we present a comprehensive first-principles study of the electronic structure of Fe 3Sn 2 to clarify the origin of the observed Dirac fermions and the nature of the electronic topology in the system. | Session 37: Magnetic Topological Materials 4: STM |
| 450 | Using nonlocal surface transport to identify the axion insulator | Chen, Rui; Li, Shuai; Sun, Hai-Peng; Lu, Haizhou; Xie, X. C. | Here, we propose a nonlocal surface transport device, in which the axion insulator can be distinguished from normal insulators without a precise measurement of the half-quantization. | Session 37: Magnetic Topological Materials 4: STM |
| 451 | Bose-Einstein condensate of Dirac magnons | Sukhachov, Pavlo; Banerjee, Saikat; Balatsky, Alexander | We derive a phenomenological multi-component model of pumped bosons together with bosons residing at Dirac nodes and study the dynamics of the condensates. | Session 38: Magnetic Topological Materials 5: Magnons |
| 452 | Para-Hermitian perturbation theory and nodal lines in magnon systems | Massarelli, Geremia; Khait, Ilia; Paramekanti, Arun | We present a systematic quasidegenerate perturbation theory scheme for para-Hermitian Hamiltonians, which faithfully reproduces the spectrum of any set of neighbouring energy eigenstates order by order, regardless of possible degeneracies. | Session 38: Magnetic Topological Materials 5: Magnons |
| 453 | Light-induced topological magnons in two-dimensional van der Waals magnets | Vinas Boström, Emil; Claassen, Martin; McIver, James; Jotzu, Gregor; Rubio, Angel; Sentef, Michael | We show that this mechanism can stabilize topological magnon excitations in honeycomb ferromagnets and in optical lattices. | Session 38: Magnetic Topological Materials 5: Magnons |
| 454 | Thermal and magnetoelastic properties of α-RuCl3 in the field-induced low temperature states | Schoenemann, Rico; Imajo, Shusaku; Weickert, Franziska; Yan, Jiaqiang; Mandrus, David; Takano, Yasumasa; Brosha, Eric; Rosa, Priscila; Nagler, Stephen; Kindo, Koichi; Jaime, Marcelo | Here we discuss the implications that new magnetocaloric, thermal expansion and magnetostriction data of α-RuCl 3 single crystals have on its temperature-field phase diagram and uncover the magnetic-field dependence of an apparent energy gap Δ(H), extracted from thermal expansion measurements, that evolves when the low temperature antiferromagnetic order is suppressed. | Session 38: Magnetic Topological Materials 5: Magnons |
| 455 | Topological thermal Hall effect of strongly interacting bosons in a disordered quantum magnet SrCu2(BO3)2 | Suetsugu, Shota; Yokoi, Taichi; Tanaka, Ibuki; Kasahara, Yuichi; Kasahara, Shigeru; Chengchao, Zhong; Totsuka, Keisuke; Kageyama, Hiroshi; Matsuda, Yuji | Here we report high resolution κ xy measurements on SrCu 2(BO 3) 2. | Session 38: Magnetic Topological Materials 5: Magnons |
| 456 | Topological Weyl magnons and thermal Hall effect in layered honeycomb ferromagnets | Li, Shuyi; Nevidomskyy, Andriy | We study the topological properties and magnon Hall effect of a 3D ferromagnet in the ABC stacked honeycomb lattice, relevant to the recent inelastic neutron scattering study of CrI3 [1]. | Session 38: Magnetic Topological Materials 5: Magnons |
| 457 | Topological properties of magnons in Ferromagnet-Superconductor heterostructure | Parajuli, Bishal; Chien, Chih-Chun; Lin, Shi-Zeng | Here, we present topological properties of magnons in a ferromagnet-superconductor heterostructure in the presence of a magnetic field. | Session 38: Magnetic Topological Materials 5: Magnons |
| 458 | Chiral Hinge Magnons in Second-Order Topological Magnon Insulators | Mook, Alexander; Diaz, Sebastian; Klinovaja, Jelena; Loss, Daniel | We theoretically unveil and numerically confirm a novel ferromagnetic state in three dimensions dubbed second-order TMI, whose hallmarks are excitations at its hinges, where facets intersect. | Session 38: Magnetic Topological Materials 5: Magnons |
| 459 | Dirac surface states in topological crystalline magnon insulators | Kondo, Hiroki; Akagi, Yutaka | In this study, we propose magnetic models having magnon surface states with Dirac dispersion. | Session 38: Magnetic Topological Materials 5: Magnons |
| 460 | Spin fluctuations in quantized transport of magnetic topological insulators | Li, Yuhang; Cheng, Ran | We show that considering the exchange gaps at the mean-field level is inadequate to predict phase transitions between electronic states of distinct topology. | Session 38: Magnetic Topological Materials 5: Magnons |
| 461 | π-flux Dirac Triplon and Thermal Hall Effect in Shastry-Sutherland model | Sun, Hao; Yang, Bo | In this letter, we introduce a effective 2-dimer tight-binding model to reveal significant physical observable when pseudospin (two sublattices) couples the tilted external magnetic field. | Session 38: Magnetic Topological Materials 5: Magnons |
| 462 | Quantum Hall-like transitions in the thermal Hall behavior of multilayer topological magnon insulators | Hofer, Stephen; Datta, Trinanjan; Tewari, Sumanta; Mazumdar, Dipanjan | In this study, we show that ABC-stacked honeycomb lattice multilayers with alternating Dzyaloshinskii-Moriya interaction (DMI) reveal a rich topological magnon phase diagram. | Session 38: Magnetic Topological Materials 5: Magnons |
| 463 | Multifunctional Antiperovskites driven by Strong Magnetostructural Coupling | Singh, Harish Kumar; Samathrakis, Ilias; Fortunato, Nuno; Zemen, Jan; Shen, Chen; Gutfleisch, Oliver; Zhang, Hongbin | Multifunctional Antiperovskites driven by Strong Magnetostructural Coupling | Session 38: Magnetic Topological Materials 5: Magnons |
| 464 | Magnetoelastic behaviors in holmium antimonide topological semimetal: magnetic torque studies | Poudel, Narayan; Hosen, M. Mofazzel; Islam, Zahirul; Kaczorowski, Dariusz; Neupane, Madhab; Gofryk, Krzysztof | We show that the magnetic torque exhibits large anisotropy in the antiferromagnetic phase. | Session 38: Magnetic Topological Materials 5: Magnons |
| 465 | Skyrmion lattice creep at ultra-low current densities | Luo, Yongkang; Lin, Shi-Zeng; Leroux, Maxime; Fobes, David; Bauer, Eric; Thompson, Joe; Janoschek, Marc; Maiorov, Boris | Here we show using resonant ultrasound spectroscopy – a probe highly sensitive to the coupling between skyrmion and atomic lattices – that in the prototypical skyrmion lattice material MnSi depinning occurs at jc that is only 4 percent of jc. | Session 38: Magnetic Topological Materials 5: Magnons |
| 466 | Scaling behavior of the quantum phase transition from a quantum anomalous Hall insulator to an axion insulator. | Wu, Xinyu; Xiao, Di; Chen, Chuizhen; Sun, Jian; Zhang, Ling; Chan, Moses; Samarth, Nitin; Xie, X. C.; Lin, Xi; Chang, Cui-Zu | We performed the scaling behavior study of quantum phase transition from quantum anomalous Hall state(QAHS) to axion insulator state in magnetic topological insulator sandwich samples. | Session 39: Magnetic Topological Materials 6: Hall |
| 467 | Hall viscosity, anisotropy & internal angular momentum | Rao, Pranav; Bradlyn, Barry | We describe a similar redundancy for dissipative viscosities, and present hydrodynamic implications of this for pipe flows and free surface waves. | Session 39: Magnetic Topological Materials 6: Hall |
| 468 | Giant Anomalous Nernst Effect in Nodal Web Ferromagnets Fe3X (X = Ga, Al) | Sakai, Akito; Minami, Susumu; Koretsune, Takashi; Chen, Taishi; Higo, Tomoya; Wang, Yangming; Nomoto, Takuya; Hirayama, Motoaki; Miwa, Shinji; Nishio-Hamane, Daisuke; Ishii, Fumiyuki; Arita, Ryotaro; Nakatsuji, Satoru | In this talk, we will present the newly discovered topological magnet Fe 3 X ( X = Ga, Al) [6]. | Session 39: Magnetic Topological Materials 6: Hall |
| 469 | Giant Anomalous Hall Effect in quasi-2D Layered Antiferromagnet Co1/3NbS2 | Tenasini, Giulia; Martino, Edoardo; Ubrig, Nicolas; Ghimire, Nirmal; Berger, Helmuth; Zaharko, Oksana; Wu, Fengcheng; Mitchell, John; Martin, Ivar; Forro, Laszlo; Morpurgo, Alberto | Here, we present experiments on the layered AFM Co 1/3NbS2, which exhibits AHE below the Néel temperature T N=29 K in bulk crystals [1]. | Session 39: Magnetic Topological Materials 6: Hall |
| 470 | Giant Anomalous Hall Effect due to Double-Degenerate Quasi Flat Bands | Jiang, Wei; Sousa, Duarte; Wang, Jianping; Low, Tony | We propose a novel approach to achieve giant AHE in materials with flat bands (FBs). | Session 39: Magnetic Topological Materials 6: Hall |
| 471 | Persistent currents and spin torque caused by percolated quantum spin Hall state | Zegarra, Antonio; Egues, Carlos; Chen, Wei | Motivated by recent experiments, we investigate the quantum spin Hall state in 2D topological insulator/ferromagnetic metal planar junctions by means of a tight-binding model and linear response theory. | Session 39: Magnetic Topological Materials 6: Hall |
| 472 | A new cubic Hall viscosity in three-dimensional topological semimetals | Robredo, Iigo; Rao, Pranav; De Juan, Fernando; Bergara, Aitor; Mañes, Juan Luis; Cortijo, Alberto; Garcia Vergniory, Maia; Bradlyn, Barry | In this talk, we explore this issue for the first time by examining the viscous response of a threefold degenerate "spin-1" fermion in the cubic (magnetic) space group P2 13 (198), with time-reversal symmetry breaking chiral magnetism. | Session 39: Magnetic Topological Materials 6: Hall |
| 473 | Longitudinal and anomalous Hall conductivity of a general two-band model | Mitscherling, Johannes | In this talk, I present a microscopic approach to the longitudinal and the anomalous Hall conductivity for a general two-band model, which captures a broad spectrum of systems with very different and rich physics like Chern insulators, ferromagnets and spiral spin density waves. | Session 39: Magnetic Topological Materials 6: Hall |
| 474 | Quantum anomalous Hall effect in two-dimensional magnetic insulator heterojunctions | Pan, Jinbo; Yu, Jiabin; Zhang, Yanfang; Du, Shixuan; Janotti, Anderson; Liu, Chaoxing; Yan, Qimin | In this talk, we propose an alternative approach to realize the quantum anomalous Hall (QAH) effect, a typical example of a magnetic topological phase, via engineering two-dimensional (2D) magnetic van der Waals heterojunctions. | Session 39: Magnetic Topological Materials 6: Hall |
| 475 | Unconventional Anomalous Hall Effect in a New Noncollinear Ferromagnetic Weyl Semimetal CeAlSi with Tunable Fermi Level | Yang, Hung-Yu; Singh, Bahadur; Gaudet, Jonathan; Lu, Baozhu; Huang, Cheng-Yi; Chiu, Wei-Chi; Huang, Shin-Ming; Wang, Baokai; Bahrami, Faranak; Xu, Bochao; Franklin, Jacob; Sochnikov, Ilya; Graf, David; Xu, Guangyong; Zhao, Yang; Hoffmann, Christina; Lin, Hsin; Torchinsky, Darius; Broholm, Collin; Bansil, Arun; Tafti, Fazel | Importantly, we observe an unconventional anomalous Hall effect (AHE) that appears (disappears) as the Fermi level lies close to (away from) the Weyl nodes. | Session 39: Magnetic Topological Materials 6: Hall |
| 476 | Tuning Chern Number in Quantum Anomalous Hall Insulators | Zhao, Yifan; Zhang, Ruoxi; Mei, Ruobing; Zhou, Ling-Jie; Yi, Hemian; Zhang, Ya-Qi; Yu, Jiabin; Xiao, Run; Wang, Ke; Samarth, Nitin; Chan, Moses; Liu, Chaoxing; Chang, Cui-Zu | Here we used molecular beam epitaxy to fabricate magnetic TI multilayers and realized the well-defined QAH effect with tunable Chern number up to 5. | Session 39: Magnetic Topological Materials 6: Hall |
| 477 | Quantum anomalous Hall effect using interfacial Green’s function method for an accurate mass gap | Kim, Jinwoong; Vanderbilt, David | In this study, we enumerate several combinations of topological crystalline insulators and magnetic insulators in a search for an optimal electronic structure, where a large mass gap is isolated inside a bulk insulating gap. | Session 39: Magnetic Topological Materials 6: Hall |
| 478 | Unconventional anomalous Hall, Nernst and thermal Hall responses in Fe3GeTe2 | Ratkovski, Danilo; Macy, Juan; Chiu, Yu Che; Zheng, Wenkai; Casas, Brian; Choi, Eun Sang; Balicas, Luis | Here, we evaluate the anomalous Hall, Nernst and thermal responses of the layered ferromagnet Fe 3GeTe 2 as a function of the temperature and field orientation. | Session 39: Magnetic Topological Materials 6: Hall |
| 479 | Half-integer quantized anomalous thermal Hall effect and topological Chern number in the Kitaev material α-RuCl3 | Kasahara, Yuichi; Yokoi, Taichi; Ma, Sixiao; Kasahara, Shigeru; Shibauchi, Takasada; Kurita, Nobuyuki; Tanaka, Hidekazu; Nasu, Joji; Motome, Yukitoshi; Hickey, Ciaran; Trebst, Simon; Matsuda, Yuji | We find that the thermal Hall plateau appears even for a magnetic field with no out-of-plane components, which is in stark contrast to the conventional electronic Hall effect that requires a perpendicular magnetic field. | Session 39: Magnetic Topological Materials 6: Hall |
| 480 | Correlation Between Chiral Fluctuations and Topological Hall Effect Above Room Temperature | Dao, Tan; Zang, Jiadong | In this project, we performed the Monte Carlo simulation of a two-dimensional model of the chiral magnet and studied the correlation between Hall conductivity and the chiral fluctuations at elevated temperatures. | Session 39: Magnetic Topological Materials 6: Hall |
| 481 | Ultrafast carrier dynamics in the ferromagnetic semimetal EuCd2As2 | ONeal, Ken; Padmanabhan, Prashant; Mix, La Moyne; Lee, Min; Sirica, Nicholas; Kuthanazhi, Brinda; Bud’ko, Sergey L.; Canfield, Paul; Prasankumar, Rohit; Yarotski, Dmitry | We report the near-infrared pump-probe ultrafast response of the ferromagnetic candidate Weyl semimetal EuCd 2As 2. | Session 40: Magnetic Topological Materials 7: New Materials |
| 482 | Broken-helix antiferromagnetic order protecting a crystalline axion insulator phase and exotic surface states in EuIn2As2 | Riberolles, Simon; Victa Trevisan, Thais; Kuthanazhi, Brinda; Heitmann, Thomas; Ye, Feng; Johnston, David; Bud’ko, Sergey L.; Ryan, Dominic; Canfield, Paul C.; Kreyssig, Andreas; Vishwanath, Ashvin; McQueeney, Robert; Wang, Lin-Lin; Orth, Peter; Ueland, Benjamin | We predict that modest values of applied magnetic field can switch between the different surfaces states. | Session 40: Magnetic Topological Materials 7: New Materials |
| 483 | Anomalous Quantum oscillations of magnetic topological semimetal EuCd2Sb2 | Shi, Yue; Jiang, Qianni; Liu, Zhaoyu; Chu, Jiun-Haw | In this talk, I will present the quantum oscillations study of an antiferromagnetic topological insulator EuCd2Sb2, which was proposed to be a magnetic Weyl semimetal in the field-induced ferromagnetic state. | Session 40: Magnetic Topological Materials 7: New Materials |
| 484 | Solution growth and physical properties of RPd3S4 topological semimetals | Slade, Tyler; Wang, Lin-Lin; Budko, Sergey; Canfield, Paul C. | We present a study of the sulfide bronzes RPd 3S 4 (R = rare earth), which adopt the cubic Pm-3n structure. | Session 40: Magnetic Topological Materials 7: New Materials |
| 485 | Experimental electronic structure of the electronically switchable antiferromagnet, CuMnAs | Linn, Andrew; Gordon, Kyle; HAO, PEIPEI; Narayan, Dushyant; Berggren, Bryan; Speiser, Nathaniel; Reimers, Sonka; Smejkal, Libor; Jungwirth, Thomas; Denlinger, Jonathan; Wadley, Peter; Dessau, Daniel | We report direct measurements of the electronic structure of single-crystalline thin films using ARPES. | Session 40: Magnetic Topological Materials 7: New Materials |
| 486 | Topological Descendants of Multicritical EuTl2 | Wang, Lin-Lin; Po, Hoi Chun; Slager, Robert-Jan; Vishwanath, Ashvin | Here we describe a paradigmatic semimetal that simultaneously incorporates multiple, and sometimes conflicting topology which guarantees gaplessness and leads to an exceptionally rich family of descendent phases on lowering symmetry. | Session 40: Magnetic Topological Materials 7: New Materials |
| 487 | Exploring broken time-reversal symmetry in Cd3As2/(Ga,Mn)Sb Dirac semimetal/ferromagnetic semiconductor heterostructures | Mitra, Arpita; Xiao, Run; Grutter, Alexander; Borchers, Julie; Kirby, Brian; Quarterman, Patrick; SAMARTH, NITIN | We aim to break time reversal symmetry (TRS) in Cd 3As 2 by interfacing with a ferromagnetic semiconductor (Ga,Mn)Sb.We have grown epitaxial Cd 3As 2 /(Ga,Mn)Sb bilayers by molecular beam epitaxy on GaSb(111) buffer layer using GaAs(111)B substrates.High-resolution XRD shows good crystalline quality of Cd 3As 2 layers with full width half maximum of rocking curves ~0.11°. | Session 40: Magnetic Topological Materials 7: New Materials |
| 488 | Investigation into the Eu Based 122 Family of Magnetic Topological Candidates | Marshall, Madalynn; Pletikosić, Ivo; Chang, Tay-Rong; Cao, Huibo; Xie, Weiwei | This research highlights the new intrinsic magnetic topological quantum material candidate, EuMg2Bi2. | Session 40: Magnetic Topological Materials 7: New Materials |
| 489 | Linear and Nonlinear Optical Spectroscopy Studies of a Magnetic Weyl Semimetal Co3Sn2S2 | Ahn, Youngjun; Owen, Rachel; Drueke, Elizabeth; Qu, Kejian; Xue, Rui; Mandrus, David; Zhao, Liuyan | In this talk, we will present our selective studies of the surface and bulk properties by conducting optical rotational anisotropy experiments of second and third harmonic generations (S/THG), respectively, using near-infrared wavelength light. | Session 40: Magnetic Topological Materials 7: New Materials |
| 490 | Time- and angle-resolved photoemission spectroscopy of the intrinsic antiferromagnetic topological insulator EuSn2P2 | Bielinski, Nina; Kim, Soyeun; Gebre, Mebatsion; Shoemaker, Daniel; Mahmood, Fahad | Here we use time- and angle- resolved photoemission spectroscopy (tr-ARPES) to observe and characterize the Dirac surface states of EuSn 2P 2 both above and below T N. | Session 40: Magnetic Topological Materials 7: New Materials |
| 491 | Magnetic sturcutre of an intrinsic magnetic topological insulator, EuSn2As2, probed via X-ray resonant exchange scattering | Islam, Zahir; Welp, Ulrich; Chung, Duck Young; Kwok, Wai-Kwong; Kanatzidis, Mercouri | In this work, we used high-resolution resonant X-ray scattering to study magnetic long-range order in the recently discovered topological material EuSn 2As 2. | Session 40: Magnetic Topological Materials 7: New Materials |
| 492 | Structural and physical properties of topological semimetal candidate EuZn2As2 | Blawat, Joanna; Marshall, Madalynn; Cao, Huibo; Xie, Weiwei; Jin, Rongying | Structural and physical properties of topological semimetal candidate EuZn2As2 | Session 40: Magnetic Topological Materials 7: New Materials |
| 493 | Magnetic order in the Dirac material EuMnSb2 | Wilde, John; Ueland, Benjamin; Riberolles, Simon; Ryan, Dominic; Kreyssig, Andreas; Vaknin, David; Heitmann, Thomas; Liu, Yong; Budko, Sergey; McQueeney, Robert | Here we present results from single-crystal neutron diffraction experiments on EuMnSb 2. | Session 40: Magnetic Topological Materials 7: New Materials |
| 494 | Onset of non-linear IV transport with magnetic order in a Mott insulator | Berry, Tanya; Ryan, Dominic; Stern, Raivo; Kumar, Nitesh; Varnava, Nicodemos; Stewart, Veronica; Schnelle, Walter; Banda, Rishi; Morano, Vincent; Lui, Defa; Mu, Qingge; Bhaskaran, Lakshmi; Pasco, Christopher; Ali, Mazhar; Armitage, Norman; Broholm, Collin; Felser, Claudia; Vanderbilt, David; McQueen, Tyrel | Our results in this work could reveal some unanswered questions of conduction and spins in the Mott Insulator model. | Session 40: Magnetic Topological Materials 7: New Materials |
| 495 | Magnetic generation and switching of topological quantum phases in a trivial semimetal α-EuP3 | Mayo, Alex; Takahashi, Hidefumi; Bahramy, Mohammad; Nomoto, Atsuro; Sakai, Hideaki; Ishiwata, Shintaro | So far, we have observed the anomalous Hall effect, which abruptly emerges at a certain value of magnetization. | Session 40: Magnetic Topological Materials 7: New Materials |
| 496 | Picosecond-long spin current generation along the low-symmetry axis of WTe2 | Lee, Kyusup; Chen, Mengji; Li, Jie; Cheng, Liang; Wang, Qisheng; Cai, Kaiming; Chia, Ee Min; Chang, Haixin; Yang, Hyunsoo | The temperature dependent study reveals that the CPGE vanishes at 175 K due to the carrier compensation. | Session 41: Magnetic Topological Materials 8: New Materials |
| 497 | Low-frequency ferromagnetic resonance in CeAlSi | Sun, Yue; Lee, Changmin; Yang, Hung-Yu; Reshetikhin, Pasha; Ajoy, Ashok; Torchinsky, Darius; Tafti, Fazel; Orenstein, Joseph | We observe a ferromagnetic resonance (FMR) in CeAlSi with a novel time-resolved magneto-optical setup, which can resolve both amplitude and direction changes of magnetization based on polarimetry. | Session 41: Magnetic Topological Materials 8: New Materials |
| 498 | Controlling magnetic order, magnetic anisotropy, and band topology in the semimetals Sr(Mn0.9Cu0.1)Sb2 and Sr(Mn0.9Zn0.1)Sb2 | ISLAM, FARHAN; Choudhary, Renu; Liu, Yong; Ueland, Benjamin; Paudyal, Durga; Heitmann, Thomas; McQueeney, Robert; Vaknin, David | Neutron diffraction and magnetic susceptibility studies show that orthorhombic single-crystals of the topological semimetals Sr(Mn 0.9Cu 0.1)Sb 2 and Sr(Mn 0.9Zn 0.1)Sb 2 undergo three-dimensional C-type AFM ordering at a significantly lower T N than that of the parent compound SrMnSb 2. | Session 41: Magnetic Topological Materials 8: New Materials |
| 499 | Phenomenology of anomalous Kerr effect in SrRuO3 thin films | Bartram, F. Michael; Sorn, Sopheak; Li, Zhuolu; Hwangbo, Kyle; Shen, Shengchun; Frontini, Felix; He, Liqun; Yu, Pu; Paramekanti, Arun; Yang, Luyi | We formulate a phenomenological theory for the unusual Kerr effect which is shown to arise from the interplay between two non-skyrmion sources: (1) magnetic domains which are naturally present during the magnetization reversal and (2) an unsual nonmonotonic relation between the Kerr angle and the magnetization. | Session 41: Magnetic Topological Materials 8: New Materials |
| 500 | Magneto-terahertz studies on the Kondo-Weyl Mn3+xSn1-x films | Han, Xingyue; Khadka, Durga; Thapaliya, Tilak; Huang, Sunxiang; Wu, Liang | In this work, we study the doping dependece in epitaxial Mn 3+xSn 1-x films by time domain terahertz spectroscopy under a magnetic field up to 7T. | Session 41: Magnetic Topological Materials 8: New Materials |
| 501 | Breaking Lorentz Reciprocity in the Weyl Semimetal Co3Sn2S2 to Enable Time-Asymmetric Photonics | Nagpal, Arun; Nenno, Dennis; Garcia, Christina; Shekhar, Chandra; Felser, Claudia; Narang, Prineha; Atwater, Harry | Here we use electromagnetic and ab initio simulations, and experimental measurements of infrared light scattering to demonstrate the breaking of Lorentz reciprocity in the ferromagnetic phase of Co 3Sn 2S 2 through calculations and measurement of nonequivalent reflection coefficients of opposing channels. | Session 41: Magnetic Topological Materials 8: New Materials |
| 502 | Magnetic Dipole Transitions in the Second Harmonic Generation Response of the LnAlSi (Ln = La, Ce, Pr, Nd) Series of Weyl Semimetals | Subedi, Sujan; Lu, Baozhu; Yang, Hung-Yu; Tafti, Fazel; Torchinsky, Darius | In this talk, we present evidence of strong MD transitions that occur in the non-magnetically ordered states of the LnAlSi (Ln = La, Ce, Pr, Nd) series of Weyl semimetals and we discuss this observation in the context of the physics of these materials. | Session 41: Magnetic Topological Materials 8: New Materials |
| 503 | Long-wavelength incommensurate spin structure in the non-centrosymmetric Weyl semimetal NdAlSi | Gaudet, Jonathan; Yang, Hung-Yu; Baidya, Santu; Lu, Baozhu; Xu, Guangyong; Zhao, Yang; Rodriguez-Rivera, Jose; Hoffmann, Christina; Graf, David; Torchinsky, Darius; Vanderbilt, David; Tafti, Fazel; Broholm, Collin | To do so, we characterized the magnetism of NdAlSi using neutron diffraction and found a ferrimagnetic state at low temperature, which is followed by a long-wavelength incommensurate order at finite temperature. | Session 41: Magnetic Topological Materials 8: New Materials |
| 504 | Topology and Magnetism in Monolayers and Bilayers of ReX3 (X = Br, I) | Mahatara, Sharad; Kiefer, Boris | In this contribution, we have computed electronic, magnetic and topological properties of 2D (mono- and bi-layers) of ReX 3 (X = Br, I) with density functional theory (DFT) including vdW interactions and SOC. | Session 41: Magnetic Topological Materials 8: New Materials |
| 505 | Machine-learning-assisted growth of ultrahigh-quality epitaxial 4d ferromagnetic Weyl semimetal SrRuO3 | Wakabayashi, Yuki; Otsuka, Takuma; Krockenberger, Yoshiharu; Sawada, Hiroshi; taniyasu, yoshitaka; Yamamoto, Hideki | State-of-the-art oxide thin film growth technologies, augmented by machine learning techniques, may allow access to such topological matter, which we have actually accomplished [2] using machine-learning-assisted molecular beam epitaxy (ML-MBE)[3]. | Session 41: Magnetic Topological Materials 8: New Materials |
| 506 | Observation of magnetic Weyl fermion excitation in antiferromagnetic kagome Mn3Pt thin films | Mukherjee, Joynarayan; Bandyopadhyay, Subhadeep; Dasgupta, Indra; Saha-Dasgupta, Tanusri; Raman, Karthik | Here, we report the observation of linearly dispersive Weyl nodes in strongly correlated kagome Mn 3Pt epitaxial films using magnetotransport measurements and density functional theory (DFT) calculations. | Session 41: Magnetic Topological Materials 8: New Materials |
| 507 | Epitaxial growth of Kagome semimetal Mn3Ge | Hong, Deshun; Liu, Changjiang; Hsiao, Haw-Wen; Zuo, Jian-Min; Liu, Haihua; Arslan, Ilke; Pearson, John; Jiang, J; Bhattacharya, Anand | This work makes tunability in topological semimetal possible and opens a pathway for both the Kagome materials related physics and devices. | Session 41: Magnetic Topological Materials 8: New Materials |
| 508 | The origin of complex magnetic phases in Fe based binary Fe3Ga4 compound | Afshar, Mahdi; Mazin, Igor | Based on our density functional theory calculations and a phenomenological model Hamiltonian, we try to elucidate the origin of different magnetic interactions and magnetic ordering in this compound. | Session 41: Magnetic Topological Materials 8: New Materials |
| 509 | Imaging the motion of individual domain walls in the magnetic Weyl semimetal Co3Sn2S2 | Lee, Changmin; Vir, Praveen; Manna, Kaustuv; Lachman, Ella; Shekhar, Chandra; Analytis, James; Felser, Claudia; Orenstein, Joseph | Here we use scanning magneto-optic Kerr microscopy to measure the motion of individual domain walls in response to oscillating magnetic fields in the frequency range from 10 Hz to 10 kHz. | Session 41: Magnetic Topological Materials 8: New Materials |
| 510 | Ferromagnetic Weyl semimetals and their electromagnetic response in RAlX materials class (R= Ce or Pr and X = Si or Ge) | Huang, Cheng-Yi; Singh, Bahadur; Yang, Hung-Yu; Lu, Baozhu; Bahrami, Faranak; Gaudet, Jonathan; Xu, Bochao; Franklin, Jacob; Sochnikov, Ilya; Graf, David; Xu, Guangyong; Zhao, Yang; Hoffmann, Christina; Broholm, Collin; Chiu, Wei-Chi; Huang, Shin-Ming; Wang, Baokai; Lin, Hsin; Torchinsky, Darius; Bansil, Arun; Tafti, Fazel | Here we present RAlX materials (R= Ce, Pr; X = Si, Ge) as new FMWSMs where the Weyl nodes are stabilized by breaking the inversion symmetry and their separation is controlled by breaking TRS. | Session 41: Magnetic Topological Materials 8: New Materials |
| 511 | Prediction of Anti-Kramers Antiferromagnetism (AKAF) in doped FeSb2 | Mazin, Igor; Smejkal, Libor; Johannes, Michelle; Gonzalez-Hernandez, Rafael; Koepernik, Klaus | In this talk we concentrate on a well known semiconductor, FeSb 2, and show several highly unexpected features: (1) DFT ground state is not paramagnetic, and not, as suggested by some, ferro-, but antiferromagnetic (AF); (2) two different AF exist, and the most stable one corresponds to the so-called AFMe order, observed experimentally in CrSb 2 (which is NOT AKAF); (3) the energetically favorable AKAF state is metallic, and the nonmagnetic one semiconducting, which is highly unusual; (4) the AFMe order is preferential to the AKAF one, since it has a pseudogap at E F. and the paramagnetic one is realized in nature because of the gap opening; (5) doping with Cr or Co reduces the advantage of (pseudo-)gapping, and in a narrow range of doping the AKAF becomes the ground state. | Session 42: Magnetic Topological Materials 9: Theory |
| 512 | Pinch-point singularities in spectroscopy guarantee topological criticality | Yan, Han | In this work we discuss how to identify topologically critical gap-closing points from energy and momentum-resolved spectroscopy without any additional knowledge of the system. | Session 42: Magnetic Topological Materials 9: Theory |
| 513 | Unlocking of time reversal, space-time inversion and rotation invariants in magnetic materials | Yang, Jian; Fang, Chen | Here we show that for elementary excitations in magnetic materials, this “locking” between quantum numbers is lifted: T 2 and (PT) 2 take all four combinations of +1 and −1 regardless of the value of the spin, where T now represents the composite symmetry of time reversal and lattice translation. | Session 42: Magnetic Topological Materials 9: Theory |
| 514 | Non-Axionic Magnetic Higher-Order Topological Insulators and High-Throughput Magnetic Topological Materials Discovery from Magnetic Topological Quantum Chemistry | Wieder, Benjamin; Xu, Yuanfeng; Elcoro, Luis; Song, Zhida; Garcia Vergniory, Maia; Bradlyn, Barry; Regnault, Nicolas; Chen, Yulin; Felser, Claudia; Bernevig, Andrei | In [Bradlyn*, Elcoro*, Cano*, Vergniory*, Wang*, et al., Nature (2017)], we introduced Topological Quantum Chemistry (TQC) – a real-space predictive theory of band topology in nonmagnetic crystals. | Session 42: Magnetic Topological Materials 9: Theory |
| 515 | Flavors of noise in a magnetic Weyl semimetal | Zhang, Shu; Tserkovnyak, Yaroslav | In this work, we investigate the magnetic noise induced by the fluctuations of the charge current, the valley (chiral) current and the spin density, respectively. | Session 42: Magnetic Topological Materials 9: Theory |
| 516 | Analog of Lieb-Schultz-Mattis argument for low dimensional antiferromagnets in the semiclassical sigma model framework | Tanaka, Akihiro; Nonomura, Yoshihiko | We revisit the Lieb-Schultz-Mattis argument as generalized by Oshikawa, and discuss how the program can be carried through in the sigma model + topological term effective action framework for antiferromagnets. | Session 42: Magnetic Topological Materials 9: Theory |
| 517 | Strong anisotropy and gyrotropy of electromagnetic wave propagation in magnetic Weyl semimetals | Belyanin, Alexey; Chen, QianFan; Oladyshkin, Ivan; Erukhimova, Maria; Tokman, Mikhail | We present rigorous quantum-mechanical derivation of bulk and surface conductivity tensors including both intraband and interband optical transitions and taking into account all possible combinations of bulk-to-bulk, bulk-to-surface, and surface-to-surface transitions. | Session 42: Magnetic Topological Materials 9: Theory |
| 518 | Topological magnetism in correlated insulators and Weyl semimetals | Nikolic, Predrag | After outlining the theory behind these conclusions, I will discuss the observable implications: magnetic orders with skyrmions and hedgehogs, spin-momentum locking of magnetic excitations, transport properties, and the prospects for 3D quantum spin liquids with topological order. | Session 42: Magnetic Topological Materials 9: Theory |
| 519 | Topological Hopf insulating phases of magnetic materials | Wang, Yuxin; Goswami, Pallab | To answer this question affirmatively, we have developed third homotopy classification scheme for n-band, Bloch Hamiltonians, belonging to the unitary class, with n≥2. | Session 42: Magnetic Topological Materials 9: Theory |
| 520 | Controlling a quantum point junction on the surface of an antiferromagnetic topological insulator | Varnava, Nicodemos; Wilson, Justin; Pixley, Jed; Vanderbilt, David | We propose to achieve this control using an antiferromagnetic topological insulator that supports two distinct types of gapless unidirectional channels on its surface, one from antiferromagnetic domain walls and the other from single-height steps. | Session 42: Magnetic Topological Materials 9: Theory |
| 521 | New topological invariants and real-space constructions of topological states protected by magnetic space group symmetries | Peng, Bingrui; Jiang, Yi; Fang, Chen | Using real-space recipes, we construct all gapped topological states protected by magnetic space groups (MSGs) for free fermion systems with spin-orbit coupling, and enumerate all topological invariants for MSG symmetries and their corresponding surface states, many of which are discovered for the first time. | Session 42: Magnetic Topological Materials 9: Theory |
| 522 | From symmetry-based indicators to topological states in magnetic space groups | Peng, Bingrui; Jiang, Yi; Fang, Chen | Here we develop the complete theory of SI in all MSGs, which includes the explicit formulas of SIs, their physical meanings and quantitative mappings to topological invariants, and their correspondence to real-space constructions of magnetic topological states. | Session 42: Magnetic Topological Materials 9: Theory |
| 523 | Towards a Theory of Surface Orbital Magnetization | Seleznev, Daniel; Vanderbilt, David | In this talk, we explore the possibility of defining a surface orbital magnetization on the boundary of a three-dimensional bulk system. | Session 42: Magnetic Topological Materials 9: Theory |
| 524 | Inversion-Asymmetric Chiral Hinge States Due to the Inversion-Z4 Topology | Tanaka, Yutaro; Takahashi, Ryo; Zhang, Tiantian; Murakami, Shuichi | We study positions of chiral hinge states in higher-order topological insulators with inversion symmetry, and we find inversion-asymmetric hinge states, which are different from the conventional inversion-symmetric hinge states in the higher-order topological insulators. | Session 42: Magnetic Topological Materials 9: Theory |
| 525 | Topological Invariant for Bosonic Bogoliubov-de Gennes Systems with Disorder | Akagi, Yutaka | In this study, we define a topological invariant corresponding to the conventional Chern number in disordered magnon Hall systems, using the method of non-commutative geometry. | Session 42: Magnetic Topological Materials 9: Theory |
| 526 | Propagation Control of Octahedral tilt in Atomically Designed Oxide Heterostructures | Jeong, Seung Gyo; Han, Gyeongtak; Song, Sehwan; Min, Taewon; Mohamed, Ahmed Yousef; Park, Sungkyun; Lee, Jaekwang; Jeong, Hu Young; Kim, Young-Min; Cho, Deok-Yong; Choi, Woo Seok | Here, we propose a strategy to selectively modulate the octahedral bonding geometries via atomic-scale heterostructuring. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 527 | Emergent Structural and Vibrational Properties in SrTiO3-CaTiO3 Superlattices using Atomic-resolution Microscopy and Theory | Hoglund, Eric; Hachtel, Jordan; Beechem, Thomas; Bao, De-Liang; Piontkowski, Zachary; Caldwell, Joshua; Ihlefeld, Jon; Ravichandran, Jayakanth; O’Hara, Andrew; Matson, Joseph; Ramesh, Ramamoorthy; Pantelides, Sokrates; Hopkins, Patrick; Howe, James | Here we combine atomic-resolution scanning-transmission-electron microscopy, vibrational electron energy-loss spectroscopy, and density-functional-theory calculations to probe the phonon spectra of a series of SrTiO 3-CaTiO 3 SLs with 1 to 27 unit-cells per layer. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 528 | Strain-tuned properties of hybrid improper ferroelectric superlattices through first-principles calculations and machine learning | Shaikh, Monirul; Karmakar, Madhusudan; Ghosh, Saurabh | We have performed first-principles density functional theory (DFT) calculations and machine learning (ML) to investigate the effect of biaxial strain on ferroelectric and magnetic properties of hybrid improper ferroelectric (LaFeO 3) 1 /(LnFeO 3) 1 superlattices (SL) where Ln= La-Lu and Y. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 529 | Effect of interfaces on band hybridization, orbital polarization, and helical magnetism in SrFeO3/CaFeO3 heterostructures | May, Steven | In this talk, I will present how the Fe-O band hybridization and Fe 3 d orbital occupancy changes across interfaces in isoelectronic SrFeO 3/CaFeO 3 superlattices. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 530 | Controlling spin-polarized carriers at the SrTiO3/EuO interface via the ferroelectric field effect | Li, Wente; Demkov, Alexander | To investigate the ferroelectric polarization morphology, we use the phenomenological Landau-Khalatnikov model and compare it with the results of first principle calculations. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 531 | Anomalous magnetoresistance due to longitudinal spin fluctuations in a Jeff = 1/2 Mott semiconductor | Hao, Lin; Wang, Zhentao; Yang, Junyi; Meyers, Derek; Chu, Jiun-Haw; Dean, Mark; Batista, Cristian; Liu, Jian | Here we will present the observation of a positive magnetoresistance that probes the staggered susceptibility of a Jeff = 1/2 Mott semiconductor, which is built as a strong spin-orbit coupled SrIrO3/SrTiO3 superlattice [Phys. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 532 | Structural modulated inteplay between charge and spin in the pseudospin-1/2 state within Slater-Mott crossover regime | Yang, Junyi; Hao, Lin; Zhang, Han; Pandey, Shashi; Gong, Dongliang; Liu, Jian | In virtue of epitaxial strain tuning of iridate thin films, we show that the pseudospin-1/2 electronic state is highly susceptible to structural degree of freedom, enabling an effective tuning of the electron correlation within the crossover regime. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 533 | Reviving dead layer magnetism by interface tailoring with strong spin-orbit materials | Howe, David; Saghayezhian, Mohammad; Wang, Zhen; Ali, Zeeshan; Siwakoti, Prahald; Zhu, Yimei; Plummer, E; Zhang, Jiandi | We have discovered that below the dead-layer thickness, through interfacial coupling, a strong re-entrant FM-insulating phase with very large magneto-resistance can appear. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 534 | Origin of orbital polarization in LaCoO3+LaTiO3: DFT+U and DMFT study | Lee, Alex; Ismail-Beigi, Sohrab | We systematically study the origin of the orbital polarization of Co 2+ by considering the various structural phases of (LCO) 1+(LTO) 1 superlattices and the La 2CoTiO 6 double perovskite, using density functional theory (DFT)+U and dynamical mean-field theory (DMFT) calculations. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 535 | Cooperative evolution of polar distortion and nonpolar rotation of oxygen octahedra in oxide heterostructures | Lee, Jaekwang; Min, Taewon; Seo, Jinsol; Han, Gyeongtak; Kim, Young-Min; Oh, Sang Ho; Jeong, Hu Young; Lee, Hyungwoo; Lee, Jungwoo; Eom, Kitae; Eom, Chang-Beom; Choi, Wooseon; Song, Kyung; Ryu, Sangwoo | Here, by using density functional theory (DFT) calculations, we show that the AFD and FE modes are cooperatively coupled in the (111)- oriented LAO/STO heterostructure; they coexist below the critical thickness (t c ) and disappear simultaneously above t c with the formation of 2DEG. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 536 | Octahedra rotations coupling in perovskite vanadate heterostructures | Gariglio, Stefano; Meley, Hugo; Alexander, Duncan; Triscone, Jean-Marc | In this work, we investigate by scanning transmission electron microscopy (STEM) the interface between two orthorhombic structures which display in their bulk part a different orientation of their tilt patterns. | Session 43: Magnetic and Structural Coupling Across Perovskite Interfaces and Superlattices |
| 537 | Robust edge states in magnetic-texture based metamaterials | Yan, Peng | Through analytical and numerical calculations, we predict (higher-order) topological insulator states in magnetic-texture (e.g., skyrmion and vortex) based metamaterials, which manifests robust edge and/or corner states at device boundaries and is characterized by the quantized Chern number and the Z N Berry phase. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 538 | Fingerprints of Universal Spin-Stiffness Jump in Two-Dimensional Ferromagnets | Troncoso, Roberto | Here we demonstrate that the spatial correlations of injected spin-currents into a pair of metallic leads can be used to measure the predicted universal jump of 2/π in the ferromagnet spin-stiffness. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 539 | Van der Waals interactions in molecules and solids from quantum Monte Carlo | Heinonen, Olle; Shin, Hyeondeok; Benali, Anouar | Van der Waals interactions in molecules and solids from quantum Monte Carlo | Session 44: Magnetism Quantum Theory and Computation Studies |
| 540 | Unusual Friedel and RKKY responses in 3D quadratic band-touching Luttinger semimetals | J. Godbout, Louis; Tchoumakov, Serguei; Witczak-Krempa, William | We study the response of Luttinger semimetals, such as alpha-Sn, HgSe, HgTe, YPtBi and Pr 2Ir 2O 7, to charge and magnetic impurities. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 541 | Analogues of light and gravity in the collective excitations of quantum magnets | Chojnacki, Leilee; Pohle, Rico; Shannon, Nicholas | Through explicit simulation, we show how the quadrupole waves of a spin-1 magnet can mimic the gravitational radiation observed from binary mergers of black holes. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 542 | Detection of Kardar-Parisi-Zhang Hydrodynamics in a quantum Heisenberg spin-half chain | Sherman, Nicholas; Scheie, Allen; Dupont, Maxime; Nagler, Stephen; Stone, Matthew; Granroth, Garrett; Moore, Joel; Tennant, David | In this work, we study the dynamical structure factor using a tensor network approach, and show signatures of KPZ survive at finite temperatures. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 543 | First Principles Studies of Fe-intercalated $\mathrm{NbS_2}$ | Weber, Sophie; Neaton, Jeffrey | To shed light on these findings, we examine the magnetic properties and transport of $\mathrm{Fe_{1/3}NbS_2}$ using density functional theory calculations. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 544 | Domain wall displacement in multisegmented nanowires | Dolocan, Voicu | In this presentation, we show that using a multisegmented nanowire, the precise manipulation of transverse DWs can be achieved depending on the segments length and materials parameters. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 545 | A Superatomic Dimer with Massive Spin Magnetic and Internal Electric Dipole Moments | Bista, Dinesh; Sengupta, Turbasu; Reber, Arthur; Khanna, Shiv | In this work, the electronic and magnetic properties of the Fe 6S 8 cluster attached with ligands and the fused superatomic dimer are investigated using the first-principles density functional theory. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 546 | Quantum spin Hall effect in two-dimensional metals without spin-orbit coupling | Klemm, Richard; Zhao, Aiying; Gu, Qiang; Bullard, Thomas; Haugan, Timothy | We propose an experiment to measure the QSHE of an electron or hole in a two-dimensional (2D) metal without SOC. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 547 | Heterogeneous Chaos in Few-body Dynamics | Moharrami Allafi, Negin; Oganesyan, Vadim | We study the time-evolution of classical spin-dimer system and nature of the transition from non-chaotic into the chaotic region of phase space. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 548 | Magnetic oxygen in transition metal oxides: A case study of Ba2CoO4 | Hou, Lin | We find that the magnetic moment is not only localized on Co atoms, as assumed in all conventional data analysis, but also distributed on its tetrahedrally-coordinated O atoms, making CoO4 the magnetic building block instead of Co alone. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 549 | Exact solution of the linearized Boltzmann equation for the low-temperature resistivity in metallic ferromagnets. | Amarel, James; Belitz, Dietrich; Kirkpatrick, Theodore | We present a rigorous proof of Bloch’s T^5 law due to electron-phonon scattering [2] and give the corresponding result for scattering by magnons [3]; the prefactor of the exponential is asymptotically independent of the temperature. | Session 44: Magnetism Quantum Theory and Computation Studies |
| 550 | Particle size-dependent magnetic hyperthermia in gadolinium silicide micro- and nano-particles from calorimetry and AC magnetometry | Boekelheide, Zoe; Hunagund, Shivakumar; Hussein, Zainab; Miller, Jackson; El-Gendy, Ahmed; Hadimani, Magundappa | This work presents measurements of size-separated ball-milled Gd 5Si 4 particles, showing that the magnetization and specific loss power both decrease with decreasing particle size. | Session 45: Magnetism in Biomedicine |
| 551 | Quintuple Carbon Steel Core Coil for Highly Focused Transcranial Magnetic Stimulation in Small Animals | Carmona, Ivan; Kumbhare, Deepak; Baron, Mark; Hadimani, Magundappa | Using FEM in ANSYS Maxwell, we obtained results for a customized array of five double-winding solenoids to restrict the stimulation to areas as small as 1 mm2. | Session 45: Magnetism in Biomedicine |
| 552 | Dual-mode nanoparticle MRI contrast agents | Van Keuren, Edward; Zheng, Xiaowan; Dahanayake, Vidumin; Lyons, Trevor; Stoll, Sarah; Albanese, Christopher; Fricke, Stanley; Rodriguez, Olga | We have developed a series of CAs based on Fe and Mn oxo-metallic clusters encapsulated in polymer nanoparticles which display a large contrast enhancement for both T1- and T2- imaging. | Session 45: Magnetism in Biomedicine |
| 553 | Temperature maps and accuracy in Magnetic Resonance Imaging thermometry using temperature sensitive superparamagnetic particles | Hankiewicz, Janusz; Stupic, Karl; Celinski, Zbigniew; Przybylski, Marek | We present data for the estimation of the accuracy of temperature determination in MRI thermometry using a homogenous phantom with embedded superparamagnetic particles exposed to a temperature gradient. | Session 45: Magnetism in Biomedicine |
| 554 | Self-assembly of superparamagnetic nanoparticles used in MRI thermometry | Stroud, John; Lachowicz, Dorota; Hankiewicz, Janusz | In this work we analyze the effects of the local magnetic fields generated by these pentagonal structures on water proton nuclear magnetic relaxation. | Session 45: Magnetism in Biomedicine |
| 555 | Tuning the heating efficiency of hybrid core/shell nanoparticles by modulating the shell composition and thickness | Lavorato, Gabriel; Das, Raja; Xing, Yutao; Robles, Joshua; Attanayake, Supun; Litterst, F. Jochen; Baggio-Saitovitch, Elisa; Phan, Manh-Huong; Srikanth, Hariharan | We studied Fe 3O 4/Co xZn 1-xFe 2O 4 core/shell nanoparticles with 12 nm cores and variable shell composition ( x=0-1) and thickness ( t=0-4 nm). | Session 45: Magnetism in Biomedicine |
| 556 | Hydraulic Permeability reconstruction in Magnetic Resonance Elstography | Sowinski, Damian; McGarry, Matthew; Gordon-Wiley, Scott; Weaver, John; Paulsen, Keith | I will explore recent advances made by our group in applying poroelasticity to MRE data, focusing on the inference of hydraulic permeability – a tissue’s capacity for permitting fluid to filtrate through it – in both simulations and phantoms, paving the way for eventual clinical use. | Session 45: Magnetism in Biomedicine |
| 557 | Analysis of resting motor threshold, coil-cortex distance and IC3-IC4 functional connectivity in schizophrenia patients during transcranial magnetic stimulation | Cheng, Emily; Pandurangi, Ananda; Mehta, Uravakhsh; Hadimani, Magundappa | We developed anatomically accurate head models of 20 schizophrenia patient using thier MRIs in SimNIBS pipeline. | Session 45: Magnetism in Biomedicine |
| 558 | A lattice Boltzmann method for simulation of diffusion-weighted MRI in biological tissue | Naughton, Noel; Georgiadis, John | The lattice Boltzmann method (LBM) is used to integrate the Bloch-Torrey equation, which describes the evolution of the magnetization signal in diffusion-weighted magnetic resonance imaging (dMRI). | Session 45: Magnetism in Biomedicine |
| 559 | Magnetism in Medicine: Magnetic Particle Imaging and Beyond | Connolly, Steve | Magnetism in Medicine: Magnetic Particle Imaging and Beyond | Session 45: Magnetism in Biomedicine |
| 560 | Standards for Spin-Based Diffusion Measurements for Quantitative MRI | Russek, Stephen | We present an examination of uncertainties in simple materials such as water, moderately complex materials such as polymer solutions, and finally in tissue. | Session 45: Magnetism in Biomedicine |
| 561 | Role of magnetic anisotropy on the hyperthermia efficiency of spherical Fe3-xCoxO4 (x = 0 – 1) nanoparticles | Das, Raja; Pham, Kim Ngoc; Attanayake, Supun; Phan, Manh-Huong; Srikanth, Hariharan | In this study, we demonstrate a simple strategy to enhance the heating efficiency of Fe 3O 4 nanoparticles through substitution of Fe +2 ions with Co +2 ions. | Session 45: Magnetism in Biomedicine |
| 562 | A Novel Magnetic Respiratory Sensor for Human Healthcare Monitoring | Hwang, Kee Young; Jimenez, Valery; Muchharla, Baleeswaraiah; Phan, Manh-Huong | In this study, we have developed a novel, non-invasive, and contactless magnetic sensing platform that can precisely monitor a patient’s breathing, movement, or sleep patterns. | Session 45: Magnetism in Biomedicine |
| 563 | Ferrimagnetic thin film systems for spintronic THz emitters | Albrecht, Manfred | We find that the THz emission amplitude closely follows the in-plane magnetization of the Fe sublattice. | Session 46: Magnetization Dynamics |
| 564 | Voltage-Controlled Dynamic Modulation of Electromagnetic Response in Antiferromagnetic Materials at Terahertz Frequencies | Xu, Xinyi; Semenov, Yuriy; Kim, Ki | In this study, we theoretically applied such features on the dynamic manipulation of electromagnetic responses with a broad tunable spectral range. | Session 46: Magnetization Dynamics |
| 565 | Ferromagnetic Resonance in Permalloy film – Platinum/Cobalt Island Hybrid Systems | Rable, Jeffrey; Kempinger, Susan; Huang, Yu-Sheng; Vogel, Michael; Hoffmann, Axel; Schiffer, Peter; Samarth, Nitin | Here, we characterize the dynamics of this hybrid Ising ASI via optically detected ferromagnetic resonance (ODFMR) probed using nitrogen-vacancy (NV) center magnetometry. | Session 46: Magnetization Dynamics |
| 566 | FMR Modes in Connected Kagome Artificial Spin Ice | Frotanpour, Ali; Woods, Justin; De Long, Lance | We use broad-band ferromagnetic resonance (FMR) and micromagentic simulations to characterize FMR modes in connected, Kagome ASI that is complicated by additional short-range exchange interactions and domain walls within lattice vertices. | Session 46: Magnetization Dynamics |
| 567 | Coherent Sub-Terahertz Spin Pumping from an Insulating Antiferromagnet | Del Barco, Enrique; Vaidya, Priyanka; Morley, Sophie; Van Tol, Johan; Liu, Yan; Cheng, Ran; Brataas, Arne; Lederman, David | I will present the first evidence of sub-terahertz coherent spin pumping at the interface of a uniaxial insulating antiferromagnet MnF 2 and a platinum thin film, measured by the ISHE voltage signal arising from spin-charge conversion in the platinum layer. | Session 46: Magnetization Dynamics |
| 568 | Using magnetic tunnel junctions to probe quantum properties of materials | Bales, Calvin; Garcia, Erick; Zhang, Yiou; Xiao, Gang; Mitrovic, Vesna | In this talk, we will present modes in which MTJ based-sensors can be optimized to probe quantum properties of materials. | Session 46: Magnetization Dynamics |
| 569 | Nanoscale Detection of Magnon Excitations with Variable Wavevectors Through a Quantum Spin Sensor | Lee-Wong, Eric; Xue, Ruolan; Ye, Feiyang; Kreisel, Andreas; Van der Sar, Toeno; Yacoby, Amir; Du, Chunhui | Building on the transformative nitrogen vacancy (NV) based quantum sensing platform, we have achieved local detection of a range of spin wave modes in magnetic insulator Y3Fe5O12 thin films over a 100-nanometer length scale. | Session 46: Magnetization Dynamics |
| 570 | Probe and Control of Photo-excited Magnetization Precession in Co/Pd Multilayer Films | Smith, Nicholas; Magill, Brenden; Herath Mudiyanselage, Rathsara; Munekata, Hiro; Khodaparast, Giti | In this talk, we present the dynamics of photo-excited precession of magnetization (PEPM) in Co/Pd multilayer films using time resolved magneto-optical Kerr effect (TRMOKE) for different pump fluences. | Session 46: Magnetization Dynamics |
| 571 | Magnetization and relaxation dynamics of core-shell magnetic nanoparticles over broad temperatures and frequencies | Bui, Thinh; Biacchi, Adam; Correa, Eduardo; Tew, Weston; Hight Walker, Angela; Dennis, Cindi; Woods, Solomon | Here, we present magnetic characterization results for our synthesized doped ferrite core-shell nanoparticles over a range of temperatures (250-330 K), magnetic field amplitudes (0-20 mT RMS), and frequencies (DC-10 MHz) to quantify magnetic anisotropy, relaxation times, and hysteresis. | Session 46: Magnetization Dynamics |
| 572 | Magnetization dynamics and spin transport in compensated ferrimagnets | Lee, Kyung-Jin | We will describe calculations and measurements of domain wall and skyrmion motion at the angular momentum compensation point. | Session 47: Magnetization Dynamics in Novel Materials |
| 573 | Effect of Notch Defects on Superfluid-Like Spin Transport | Smith, David; Ramos-Diaz, Fernando; Simmers, Matthew; Takei, So; Emori, Satoru | We examine the effects of pinning potentials (notch defects) on superfluid-like spin transport [1] in magnetic nanostrips using a one-dimensional model and micromagnetic simulations. | Session 47: Magnetization Dynamics in Novel Materials |
| 574 | Ultra-low critical velocity switching of magnetic vortex core polarity | Mehrnia, Mahdi; Trimble, Jeremy; Heinonen, Olle; Berezovsky, Jesse | In pristine samples with weak defects, we observe normal gyrations of the vortex core. | Session 47: Magnetization Dynamics in Novel Materials |
| 575 | Challenges and opportunities for skymionic racetrack devices | Vakilitaleghani, Hamed; Morshed, Golam; Ghosh, Avik | We propose to use the current-induced displacement of voltage gated skyrmions as a native memory for temporal computing 1 as well as conventional Boolean logic operations 2. | Session 47: Magnetization Dynamics in Novel Materials |
| 576 | Electrically reconfigurable skyrmion lattice based self-adaptive oscillating neurons | Jadaun, Priyamvada; Cui, Can; Incorvia, Jean Anne | Here, we utilize an electrically reconfigurable skyrmion lattice to design and simulate a novel artificial neuron that incorporates two advanced neural behaviors: oscillatory dynamics and neuromodulation. | Session 47: Magnetization Dynamics in Novel Materials |
| 577 | Guided Motion for Skyrmions Along Square Obstacle Arrays Interface | Vizarim, Nicolas; Reichhardt, Cynthia; Venegas, Pablo; Reichhardt, Charles | In this work we simulate the skyrmion motion when subjected to an ac drive in the presence of a square obstacle array. | Session 47: Magnetization Dynamics in Novel Materials |
| 578 | Chemisorption-Induced Dzyaloshinskii-Moriya Interactions | Chen, Gong; Mascaraque, Arantzazu; Jia, Hongying; Zimmermann, Bernd; Robertson, Maccallum; Lo Conte, Roberto; Ophus, Colin; Fernandes Cauduro, Andre Luis; Hoffmann, Markus; BARRIO, MIGUEL; Ding, Haifeng; Wiesendanger, Roland; Michel, Enrique; Bluegel, Stefan; Schmid, Andreas; Liu, Kai | We find that the DMI at the oxygen/ferromagnet interface is comparable to that at ferromagnet/transition-metal interfaces. | Session 47: Magnetization Dynamics in Novel Materials |
| 579 | Skyrmion generation engineered by ionic liquid gating in ultra-thin films | Zhang, Yao; Dubuis, Guy; Granville, Simon | In this work, we investigated the skyrmion generation in MgO/Mn 2CoAl/Pd ultra-thin films with perpendicular magnetic anisotropy (PMA) by ionic liquid gating (ILG). | Session 47: Magnetization Dynamics in Novel Materials |
| 580 | Late stages in the ordering of magnetic skyrmion lattices | Stidham, James; Pleimling, Michel | Defining skyrmion displacements that change the connectivity of cells obtained in a Voronoi tesselation as events, we investigate event histograms as a function of the time elapsed since preparing the system as well as the histograms of consecutive events as a function of the time separating these two events. | Session 47: Magnetization Dynamics in Novel Materials |
| 581 | Operando Control of Skyrmion Density in a Lorentz Transmission Electron Microscope with Current Pulses | Park, Albert; Chen, Zhen; Zhang, Xiyue; Zhu, Lijun; Muller, David; Fuchs, Gregory | We investigate the behavior of skyrmions that are strongly bound to magnetic pinning sites using this method. | Session 47: Magnetization Dynamics in Novel Materials |
| 582 | Skyrmion lattice formation and destruction mechanisms probed with SANS | Liyanage, Namila; Tang, Nan; Quigley, Lizabeth; Shu, Guo-Jiun; Chou, Fangchang; Butch, Nicholas; Bleuel, Markus; Borchers, Julie; DeBeer-Schmitt, Lisa; Gilbert, Dustin | In this work, we have measured the slow dynamics on B20 skyrmion materials MnSi, FeCoSi, and Bloch skyrmions Cu 2OSeO 3, by using a magnetic field with a frequency of 0.1 Hz and measured with SANS. | Session 47: Magnetization Dynamics in Novel Materials |
| 583 | Large and local magnetoresistance in a state-of-the-art perpendicular magnetic medium | Williamson, Morgan; Wang, Cheng; Huang, Pin-Wei; Ju, Ganping; Tsoi, Maxim | Large and local magnetoresistance in a state-of-the-art perpendicular magnetic medium | Session 48: Magneto-Transports and Magnetic Interfaces |
| 584 | Longitudinal and transverse unidirectional magnetoresistances driven by interfacial spin-orbital scattering | Mehraeen, M.; Shen, Pengtao; Zhang, Shulei | The recent observation of the unidirectional spin Hall magnetoresistance (USMR) — a longitudinal magnetoresistance that changes sign with the reversal of either the in-plane electric field or the magnetization — in ferromagnetic and heavy metal bilayers has led to increased interest in the study of nonlinear magnetotransport effects. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 585 | Linear and Nonlinear Two-Terminal Spin-Valve Effect from Chirality-Induced Spin Selectivity | Liu, Tianhan; Wang, Xiaolei; Wang, Hailong; Lochner, Eric; Schlottmann, Pedro; Von Molnar, Stephan; Zhao, Jianhua; Xiong, Peng | Here, we report definitive observation of CISS-induced magnetoconductance in vertical heterojunctions of (Ga,Mn)As/AHPA-L molecules/Au, directly verifying spin filtering by the AHPA-L molecules via spin detection by the (Ga,Mn)As. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 586 | Electrical Switching of Antiferromagnetic FexNbS2 driven by the collective dynamics of a coexisting spin glass | Maniv, Eran; Nair, Nityan; Haley, Shannon; Doyle, Spencer; John, Caolan; Cabrini, Stefano; Maniv, Ariel; Ramakrishna, Sanath; Tang, Yun-Long; Ercius, Peter; Ramesh, Ramamoorthy; Tserkovnyak, Yaroslav; Reyes, Arneil; Analytis, James | In this talk, I will show that the coexistence of spin glass and antiferromagnetic order allows a novel mechanism to facilitate the switching of the intercalated transition metal dichalcogenide Fe 1/3±δNbS 2, which is rooted in the electrically stimulated collective winding of the spin glass. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 587 | Evidence for ideal memristive functionality in ferromagnet/antiferromagnet nanostructures revealed by spin Hall effect-driven harmonic measurements | Ivanov, Sergei; Urazhdin, Sergei | We study thin-film Pt/Permalloy(Py)/CoO nanostrips to demonstrate the possibility to drive viscous magnetization dynamics of Permalloy by the current-driven spin Hall effect in Pt and the Oersted field and detect it using the anisotropic magnetoresistance. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 588 | Observation of magnetoelastic Gilbert damping in highly magnetostrictive Fe0.7Ga0.3 thin films | Peria, William; Yu, Heshan; Lee, Seunghun; Takeuchi, Ichiro; Crowell, Paul | Here we report a large magnetoelastic contribution to the Gilbert damping in highly magnetostrictive Fe 0.7Ga 0.3 thin films, which grows to as large as 6 times greater than the intrinsic damping at 50 K. To show this, we present the orientational and temperature dependence of the Gilbert damping. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 589 | Chirality induced spin selectivity through time-reversal symmetric helical molecular junctions | Utsumi, Yasuhiro; Entin-Wohlman, Ora; Aharony, Amnon | Chirality induced spin selectivity through time-reversal symmetric helical molecular junctions | Session 48: Magneto-Transports and Magnetic Interfaces |
| 590 | Non-charge-carrier-mediated spin-transport in an organic semiconductor | Popli, Henna; Wang, Jingying; Liu, Xiaojie; Lafalce, Evan; Tennahewa, Taniya; Malissa, Hans; Vardeny, Valy; Boehme, Christoph | We report experiments scrutinizing existing theoretical pictures of spin-transport in organic thin films, based on the idea that this is due to the same mechanisms as charge transport [1, 2], as it is the case for many inorganic materials. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 591 | Substrate Effects on Spin Lattice Relaxation in the Molecular Qubit CuPc | Mullin, Kathleen; Rondinelli, James | To address this challenge, we performed electronic structure calculations on a substrate-supported molecular magnet system, comprising copper(II) phthalocyanine(CuPc) on graphene, and examined changes in relaxation times using a spin lifetime proxy. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 592 | Temperature dependence of shot noise in double barrier magnetic tunnel junctions | Niu, Jiasen; Liu, Liang; Feng, Jiafeng; Han, Xiufeng; Coey, J M; Zhang, Xiaoguang; Wei, Jian | We report measurement of shot noise in CoFeB/MgO/CoFeB/MgO/CoFeB double barrier magnetic tunnel junctions, which shows a strong temperature dependence. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 593 | ac Hanle effect in spin valves | Bazaliy, Yaroslaw | We study the combination of the two effects: an ac Hanle effect in spin valves and find that it results in new types of signatures in the non-local voltage dependencies. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 594 | Magnetic and Electron-Transport Properties of Co2Si Nanomagnets | Pahari, Rabindra; Balasubramanian, Balamurugan; George, Tom; Manchanda, Priyanka; Ullah, Ahsan; Skomski, Ralph; Sellmyer, David | In this work, we investigate ferromagnetism and magnetotransport in thin films of Co2Si nanoclusters experimentally and theoretically. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 595 | Current-induced unidirectional magnetoresistance in Pt/FeRh bilayers | Shim, Julie; Saglam, Hilal; Gibbons, Jonathan; Oh, Junseok; Li, Yi; Zhang, Wei; Zhang, Shulei; Hoffmann, Axel; Sklenar, Joseph; Mason, Nadya | In this work, we report a UMR effect in the antiferromagnetic phase of a Pt/FeRh bilayer. | Session 48: Magneto-Transports and Magnetic Interfaces |
| 596 | Bi-reflection of spin waves by magnon-phonon hybridization | Hioki, Tomosato; Hashimoto, Yusuke; Saitoh, Eiji | In this talk, we report the result of time-resolved magneto-optical microscopy of the reflection dynamics of the hybridized waves. | Session 49: Magnon Spin Current and Transport |
| 597 | Unitary magnon-mediated operations for quantum computing | Trevillian, Cody; Tyberkevych, Vasyl | Here, we show that dynamic tuning of magnon frequencies at timescales comparable to the magnon-photon energy exchange time allows one to achieve qualitatively new functionalities of such hybrid devices. | Session 49: Magnon Spin Current and Transport |
| 598 | Magnon supercurrent transport and interference effects | Hillebrands, Burkard | In our experiments, we have found a fingerprint of the supercurrent efflux of condensed magnons subjected to a phase gradient imposed by a local heating of the magnetic sample. | Session 49: Magnon Spin Current and Transport |
| 599 | A simple model for the description of Bose-Einstein condensation of magnons at room temperature | Artemchuk, Petro; Slavin, Andrei; Tyberkevych, Vasyl | We developed such an approximate model, and demonstrated that mBEC can be described as a gas of weakly-interacting bosonic quasi-particles with anisotropic effective mass in an infinite potential well formed by the ferromagnetic film. | Session 49: Magnon Spin Current and Transport |
| 600 | Diffusive Magnon Spin Nernst Effect in Antiferromagnets | Zhang, Hantao; Cheng, Ran | To properly accommodate these complexities, we formulate a diffusive theory of the SNE of antiferromagnetic magnons under a realistic device geometry. | Session 49: Magnon Spin Current and Transport |
| 601 | Spin transport in an electrically driven magnon gas near Bose-Einstein condensation: Hartree-Fock-Keldysh theory | Takei, So | The Keldysh path integral formalism is used to model the magnon gas driven into a nonequilibrium steady state by mismatched bath temperatures and/or electrical injection, and we analyze the magnon system in the normal state, but close to the instability to Bose-Einstein condensation, within the self-consistent Hartree-Fock approximation. | Session 49: Magnon Spin Current and Transport |
| 602 | Anisotropic magnon spin diffusion length in ultra-thin spinel ferrite thin films | Li, Ruofan; Li, Peng; Yi, Di; Suzuki, Yuri; Ralph, Daniel; nan, tianxiang | Here we demonstrate anisotropic magnon spin transport in coherently-strained ultra-thin epitaxial films of magnesium aluminum ferrite (MgAl 0.5Fe 1.5O 4, MAFO) with low Gilbert damping and a thickness of 6 nm. | Session 49: Magnon Spin Current and Transport |
| 603 | Unconventional Singularity in Anti-Parity-Time Symmetric Cavity Magnonics | Yang, Ying; Wang, Yi-Pu; Rao, J. W.; Gui, Y. S.; Yao, B. M.; Lu, W.; Hu, Can-Ming | By engineering an anti-parity-time (anti-PT) symmetric cavity magnonics system with precise eigenspace controllability, we observe two different singularities in the same system. | Session 49: Magnon Spin Current and Transport |
| 604 | Magnon-driven chiral charge and spin pumping and electron-magnon scattering from time-dependent quantum transport combined with classical atomistic spin dynamics | Suresh, Abhin; BAJPAI, UTKARSH; Nikolic, Branislav | In this study, we employ recently developed [M. D. Petrovic et. | Session 49: Magnon Spin Current and Transport |
| 605 | Mesoscopic Material Properties from Magnon Scattering in Thin Films | Esterlis, Ilya; Fechisin, Christopher; Zhou, Tony; Sels, Dries; Fernandez, Daniel; Demler, Eugene; Yacoby, Amir | Toward this end, we study the scattering of spin waves in magnetic thin films for application to our tabletop magnon scattering platform ( 1). | Session 49: Magnon Spin Current and Transport |
| 606 | Intrinsic Magnon Nernst Effect in Pyrochlore Iridate Thin Films | Ma, Bowen; Fiete, Gregory | We theoretically study the intrinsic magnon Nernst effect in pyrochlore iridate trilayer thin films grown along the [111] direction using a strong coupling approach. | Session 49: Magnon Spin Current and Transport |
| 607 | Magnon-Mediated Spin Transport in TmIG/Au/TmIG Valves with Perpendicular Magnetic Anisotropy | Da Silva Vilela, Gilvania; Santos, Eduardo; Abrao, Elias; Rezende, Sergio; Azevedo, Antonio; Moodera, Jagadeesh | In this work, we investigate the spin dynamics and the transport of thermally driven spin currents in valves composed of two layers of TmIG (Tm 3Fe 5O 12) thin films with PMA separated by Au. | Session 49: Magnon Spin Current and Transport |
| 608 | Birefringence-like spin transport via linearly polarized antiferromagnetic magnons | Han, Jiahao; Zhang, Pengxiang; Bi, Zhen; Fan, Yabin; Safi, Taqiyyah; Xiang, Junxiang; Finley, Joseph; Fu, Liang; Cheng, Ran; Liu, Luqiao | In this work, we experimentally demonstrate that an easy-plane insulating AFM, α-Fe 2O 3 thin film, can conduct efficient spin transmission over micrometer distance. | Session 49: Magnon Spin Current and Transport |
| 609 | Spin Echo and Coherence Time of Cr7Mn Nanomagnet | Chen, Guanchu; Joshi, Gajadhar; Logan, James; Sava, Daniel; Timco, Grigore; Winpenny, Richard; Friedman, Jonathan | We measured T 2 and observed it to peak around zero field. | Session 50: Molecular Magnets |
| 610 | Magneto-elastic coupling in multiferroic metal-organic framework [(CH3)2NH2]Co(HCOO)3 | Thirunavukkuarasu, Komalavalli; Richardson, Rachael; Lu, Zhengguang; Combs, Nicholas; Huang, Nan; Pokharel, Ganesh; Smirnov, Dmitry; Mandrus, David | In the infrared studies under applied magnetic fields, it was concluded that Co complex adopts a different mechanism for facilitating saturation of magnetic states by involving formate stretching distortions unlike other complexes in the family that use the formate bending mode [Inorg. | Session 50: Molecular Magnets |
| 611 | Molecular Approaches to Magnetic Relaxation in Noisy, Magnetic Environments | Zadrozny, Joseph | In this talk, I will discuss our lab’s recent results in studying the environmental sensitivity of electron and nuclear spin dynamics in magnetic molecules. | Session 50: Molecular Magnets |
| 612 | Information and decoherence in muon-fluorine coupled systems | Blundell, Stephen; Wilkinson, John | We have developed a method [1] to model this problem and account for our experimental data in a variety of fluorides without resorting to phenomenological stretched exponential functions that have been used in most previous treatments. | Session 50: Molecular Magnets |
| 613 | Topologically protected ground state degeneracies in an interacting two-spin system | Frank, György; Palyi, Andras; Scherübl, Zoltán; Csonka, Szabolcs; Zaránd, Gergely | We theoretically study geometrical and topological aspects of a simple, yet experimentally relevant quantum magnet: two localized interacting electrons subject to spin-orbit coupling [1]. | Session 50: Molecular Magnets |
| 614 | Coherence Time Enhancement in the [VO(TPP)] Molecular Nanomagnet | Sheehan, Brendan; Santanni, Fabio; Chen, Guanchu; Joshi, Gajadhar; Sorace, Lorenzo; Sessoli, Roberta; Friedman, Jonathan | 1 Here, we investigate its behavior in the microwave regime with continuous wave (cw) and pulsed electron-spin resonance (ESR) techniques, using a homebuilt ESR spectrometer. | Session 50: Molecular Magnets |
| 615 | A Fast, Clock-Transition-Protected CNOT Gate with Molecular Nanomagnet Dimers | Gardner, Alexander; Collett, Charles | In this research, the scheme is purely active, the transition coming from a single RF pulse and so will be significantly faster. | Session 50: Molecular Magnets |
| 616 | Jahn-Teller Solid, Liquid and Gas spin Spin-crossover System Mn(taa) | Yu, Jie-Xiang; Chen, Dian-Teng; Gu, Jie; Chen, Jia; Jiang, Jun; Zhang, Long; Yu, Yue; Zhang, Xiaoguang; Zapf, Vivien; Cheng, Hai-Ping | Here, we investigated the microscopic origin of the phase transition and magnetoelectric coupling in spin-crossover system Mn(taa) via first-principles and Monte Carlo simulation. | Session 50: Molecular Magnets |
| 617 | Molecular approaches to next-generation magnetic materials at the nanoscale | Christou, George | This talk will describe the synthesis and structures of this class of new molecular metal oxide systems, together with an analysis of their magnetic properties by a variety of physical and spectroscopic methods. | Session 50: Molecular Magnets |
| 618 | Accessing the effect of support on the electronic structure of Fe[qsal(2,4-diterbutyl)]2 Spin crossover molecule: A First-Principles Study | Jiang, Tao; Le, Duy; Rahman, Talat | Applying density functional theory calculations to the SCO molecule Fe[qsal(2,4-diterbutyl)] 2 adsorbed on Au(111), graphene, and hexagonal boron nitride ( h-BN), we showed a contrast in the influence of the substrate on electronic structure and magnetic properties of the molecule. | Session 50: Molecular Magnets |
| 619 | Ultrafast and non-linear optical studies of multiferroic BaTiO3-BiFeO3 and heterostructures based on ferroelectric Pb 0.52 Zr 0.48 TiO 3 | Herath Mudiyanselage, Rathsara; Magill, Brenden; Holleman, Jade; McGill, Stephen; Kang, Han-Byul; Kang, Min Gyu; Priya, Shashank; Stanton, Christopher; Khodaparast, Giti | In our work, we focused on probing ultrafast dynamics and nonlinear light-matter interactions in these structures. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 620 | Ferroelectric switching in the Aurivillius phase oxide SrBi2Ta2O9 from first principles | Pokhrel, Nabaraj; Nowadnick, Elizabeth | Here, we use density functional theory calculations and group theoretic analysis to explore symmetry-distinct intrinsic ferroelectric switching pathways of SrBi 2Ta 2O 9. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 621 | Giant Linear Magnetoelectric Effect at the Morphotropic Phase Boundary of Epitaxial Sr0.5Ba0.5MnO3 films | Bayaraa, Temuujin; Yang, Yurong; Ye, Meng; Bellaiche, Laurent | In this work, first-principles calculations are conducted to compute linear magnetoelectric coupling coefficients in epitaxial (001) Sr 0.5Ba 0.5MnO 3 films. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 622 | Pressure-induced metal-insulator transition in oxygen-deficient ferroelectrics | Xia, Chengliang; Chen, Yue; Chen, Hanghui | Our work shows that for LiNbO 3-type strong ferroelectrics, combining oxygen vacancies and pressure can lead to new phenomena and potential functions, in contrast to the harmful effects occurring to perovskite ferroelectric oxides such as BaTiO 3. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 623 | Optical and structural properties of type-II multiferroic candidates RbFe(AMO4)2 (A = Mo, Se, S) | Owen, Rachel; Drueke, Elizabeth; Albunio, Charlotte; Kaczmarek, Austin; Jin, Wencan; Obeysekera, Dimuthu; Cheong, Sang-Wook; Yang, Junjie; Cundiff, Steven; Zhao, Liuyan | Motivated by the search for type-II multiferroics, we present an optical study of a complex oxide family of type-II multiferroic candidates: RbFe(MoO 4) 2, RbFe(SeO 4) 2, and RbFe(SO 4) 2. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 624 | Magnetocapacitance Effect and Magnetoelectric Coupling in Type-II Multiferroic HoFeWO6 | Adnani Takantapeh, Moein; Gooch, Melissa; Deng, Liangzi; Agrestini, Stefano; Herrero-Martín, Javier; Wu, Hung-Cheng; Chang, Chung-Kai; Salavati-fard, Taha; Poudel, Narayan; García-Muñoz, José Luis; Daneshmandi, Samira; Wu, Zheng; Grabow, Lars; Lai, Yen-Chung; Yang, Hung-Duen; Pellegrin, Eric; Chu, Paul C. W. | We have studied the magnetocapacitance (MC) effect and magnetoelectric (ME) coupling in HoFeWO 6, a type-II multiferroic with an onset of electric polarization and an antiferromagnetic (AFM) ordering at the Neel temperature (T N) of 17.8 K. With a polar structure at room temperature, our X-ray diffraction measurements did not show any structural phase transition across T N, consistent with our density functional theory calculations. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 625 | Unconventional ferroelectricity from competing states in perovskites | Kotiuga, Michele | Using this methodology, I will briefly present a medium-throughput study of a number of perovskites. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 626 | Unique and unusual properties of layered ferrielectric CuInP2S6 – II. Experimental | Neumayer, Sabine; Tao, Lei; Brehm, John; O’Hara, Andrew; Si, Mengwei; Liao, Pai-Ying; Ye, Peide (Peter); McGuire, Michael; Susner, Michael; Pantelides, Sokrates; Maksymovych, Petro; Balke, Nina | Unique and unusual properties of layered ferrielectric CuInP2S6 – II. Experimental | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 627 | Unique and unusual properties of layered ferrielectric CuInP2S6 – I. Theory | Tao, Lei; Neumayer, Sabine; O’Hara, Andrew; Brehm, John; Maksymovych, Petro; Balke, Nina; Pantelides, Sokrates | By combining density-functional-theory calculations and piezoelectric-force-microscopy experiments (next abstract by S. Neumayer et al.), we demonstrate that CIPS features a quadruple-well potential with four polarization states, corresponing 1 to Cu atoms displacing within or just outside the CIPS layers. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 628 | Influence of Polarization, Strain, and Doping on the Magnetoelectric Properties of LSMO/PZT Interfaces: An Ab Initio Study | Acharya, Krishna; Vasiliev, Igor | We apply ab initio methods based on density functional theory to study the influence of polarization, strain, and doping on the magnetoelectric coupling at the (0,0,1) interface between PZT (PbZr0.2Ti0.8O3) and LSMO at three different doping levels (La0.8Sr0.2MnO3, La0.67Sr0.33MnO3, and La0.5Sr0.5MnO3). | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 629 | The Effect of Charge Doping on the Phase Stability and Polarization of Binary Oxide Ferroelectrics | Cao, Tengfei; Mishra, Rohan | We will present how the additional charges are accommodated in the structure, and their coupling with the polar and non-polar distortion modes. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 630 | Studying the Ferroelectric Domain Memory-Dependent Evolutions in Multiferroic BTO/CFO Janus Nanofibers Exploiting a Magnetic Field | Arash, Saba; Chavez, Bryan; Bauer, Matthew; Andrew, Jennifer; Crawford, Thomas; Wu, Yanwen | In this work to further explore this behavior, the ferroelectric domains are optically observed in BTO/CFO Janus nanofibers using magnetic polarization resolved second harmonic generation measurement technique. | Session 51: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 1 |
| 631 | Sum-frequency excitation of coherent magnons | Wang, Derek; Juraschek, Dominik; Narang, Prineha | Here, we describe mechanisms by which the sum-frequency components of the driving field can be used. | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 632 | Impact of intrinsic defects on ferroelectric polarization in YFeO3 | Klyukin, Konstantin; Ning, Shuai; Ross, Caroline; Yildiz, Bilge | In this work, we investigate a variety of intrinsic defects in YFO by means of DFT calculations and the Berry phase approach. | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 633 | Origin of antiferroelectricity in NaNbO3 | Hadaeghi, Niloofar; Zhang, Hongbin | To figure out the origin of antiferroelectricity in NaNbO 3, we performed in-depth investigation combining symmetry analysis and density functional theory (DFT) calculation. | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 634 | Prediction of exotic magnetic states in quasi-one-dimensional iron selenide compound Na2FeSe2 | pandey, bradraj; Lin, Ling-Fang; Soni, Rahul; Kaushal, Nitin; Herbrych, Jacek; Alvarez, Gonzalo; Dagotto, Elbio | Motivated by recent progress in preparing alkali-metal compounds, we present the magnetic and electronic phase diagram of the quasi-one-dimensional alkali metal iron selenide Na 2FeSe 2 . | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 635 | Phonon Anharmonicity in Tunable Quantum Paraelectrics | He, Xing; Bansal, Dipanshu; Abernathy, Douglas; Winn, Barry; Chi, Songxue; Boatner, Lynn; Delaire, Olivier | We used inelastic neutron scattering and first-principle simulations to probe the temperature, electric field, and doping effects on phonons in SrTiO3 and KTaO3. | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 636 | Amorphous to crystal phase transition for organic ferroelectrics revealed by in situ hysteresis loop measurements. | Yuan, Yifan; Xu, Xiaoshan | Amorphous to crystal phase transition for organic ferroelectrics revealed by in situ hysteresis loop measurements. | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 637 | Domain fluctuations in a ferroelectric low-strain BaTiO3 thin film | Li, Jianheng; Zhong, Louie; Jangid, Rahul; Meera, FNU; Rippy, Geoffery; Ainslie, Kenneth; Kohne, Chris; Everhardt, Arnoud; Noheda, Beatriz; Zhang, Yugang; Fluerasu, Andrei; Matzen, Sylvia; Kukreja, Roopali | In this study, we utilized X-ray photon correlation spectroscopy to probe ordered a/c domain dynamics and fluctuations across a/b to a/c domain transformation and Curie temperature. | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 638 | Designing layered two dimensional Van der Waals multiferroics and polar metals | M. J., Swamynadhan; Ghosh, Saurabh | We have employed first-principles density functional theory calculations to investigate the electric, magnetic and electronic properties of ABP 2S 6 (A = Cu, Ni; B = Cr, Mn) two dimensional (2D) transition metal phosphorous chalcogenides (TMPC). | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 639 | Hexagonal ABC polar metals from first principles | Genser, Konrad; Rabe, Karin | In this work, we study the structural energetics and band structures of real and hypothetical hexagonal ABC intermetallic phases, using first principles calculations to determine the structural parameters and the bands in each phase. | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 640 | Role of structure, energetics, and electronic structure in determining the pressure response of octahedral rotations in Ruddlesden-Popper layered perovskites | Poyyapakkam Ramkumar, Sriram; Nowadnick, Elizabeth | In this work, we use a combination of group theoretic analysis, density functional theory calculations, and Landau free energy expansions to explore how octahedral rotations in a family of A 3B 2O 7 RP materials respond to applied pressure. | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 641 | Thermal expansion in Ruddlesden-Popper and perovskite sulfides | Koocher, Nathan; Rondinelli, James | Here, we analyze structural lattice dynamical, and thermodynamic properties of d 0 Ruddlesden-Popper and perovskite sulfides using the self-consistent quasi-harmonic approximation with density functional theory. | Session 52: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics – 2 |
| 642 | Spin State Relaxation in Spin Crossover Molecules | Park, Haechan; Chen, Jia; Cheng, Hai-Ping | In this study, we aim to build a model in a simple and straightforward manner and solve a master equation within the reduced density matrix (RDM) formalism and the golden rule expression. | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 643 | Modeling Harmonic and Anharmonic Spin-Vibron Coupling in the Fe3+ Molecular Magnetic | Dema, Karma; Pederson, Mark | We have performed frozen phonon calculations on the chiral Fe 3O(NC 5H 5) 3(O 2CC 6H 5) 6 molecular cation and determined magnetic changes as a function of phonon displacement. | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 644 | Spin-crossover in Molecules and Solids with a Low-cost, Well-behaved meta-GGA Density Functional | Trickey, Samuel; Mejia-Rodriguez, Daniel; Albavera Mata, Angel | Spin-crossover in Molecules and Solids with a Low-cost, Well-behaved meta-GGA Density Functional | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 645 | Electric field control of spins in piezoelectrics, ferroelectrics, molecules, and on surfaces | Ardavan, Arzhang | Electric field control of spins in piezoelectrics, ferroelectrics, molecules, and on surfaces | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 646 | Magnetic Properties of Frustrated Triangular Copper Based Qubits | Reyes, Ian; Hooshmand, Zahra; Pederson, Mark | Here we focus on the search for appropriate qubits, polymeric building blocks for quantum computers, that can effectively be implemented into such electronic systems. | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 647 | Competing Exchange Interactions and Multiferroic Behavior of a Molecule-Based Magnet | Fishman, Randy; Bai, Xiaojian; Garlea, Vasile; Hong, Tao; Fernandez-Baca, Jaime; Cao, Huibo; Tian, Wei; Lee, Minseong; Zapf, Vivien; Lee, Junhee; Clune, Amanda; Hughey, Kendall; Musfeldt, Janice | We evaluate the magnetic interactions in the low-field multiferroic phase by comparing inelastic neutron scattering spectra of a single crystal with a simple Heisenberg model containing five exchange interactions mediated by intermolecular hydrogen and halogen bonds. | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 648 | An umbrella for electron rain: Dependence of magnetization on the direction of alkane bridge | Hooshmand, Zahra; Johnson, Alexander; Dema, Karma; Pederson, Mark | Here, we present calculated results based on density functional theory for switching the magnetism of the Fe 3-graphene system by controlling the orientation of a mechanical charge-transfer bridge,CH 4 . | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 649 | Electric field control of single spins in oxide ferroelectric hosts | Leclerc, Nima; Inzani, Katherine; Das, Sujit; Laguta, Valentin; Ardavan, Arzhang; Pokhrel, Nabaraj; Nowadnick, Elizabeth; Ramesh, Ramamoorthy; Griffin, Sinead | Despite the successful scaling of CMOS transistor gate lengths below 10 nm, there has been a corresponding increase in losses as we approach the Boltzmann limit of current control. | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 650 | Magnetoelectric effect arising from a field-induced pseudo Jahn-Teller distortion in a rare-earth magnet | Lee, Minseong; Chen, Qiang; Choi, Eun Sang; Huang, Qing; Wang, Zhe; Ling, Langsheng; Qu, Zhe; Wang, Guohua; Ma, Jie; Aczel, Adam; Zhou, Haidong | In sharp contrast, here we identify CsEr(MoO4)2 as a magnetoelectric material without magnetic transition metal ions, thus ensuring that the Er ions play a key role in achieving this interesting property. | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 651 | Pressure-induced ferroelectric reentrance in a molecular magnet | Wu, Yan; Ding, Lei; Su, Na; Cheng, Yongqiang; Chakoumakos, Bryan; Tian, Wei; Sun, Young; Cheng, Jinguang; Cao, Huibo | The interplay of spin, charge and lattice under pressure in this molecular magnet system brings new insights into the study of multiferroics and new routes in designing multi-functional materials. | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 652 | Methodological Choices for the Spin-Crossover Energy: Mn(taa) as an Example | Albavera Mata, Angel; Mejia-Rodriguez, Daniel; Fonseca, Eric; Cheng, Dianteng; Cheng, H-P.; Trickey, Samuel; Hennig, Richard | With Mn(taa) as the example, we discuss the effects of DFA choice, dispersion corrections, whether and how to use Hubbard U corrections, and technical and procedural sensitivities and subtleties. | Session 53: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -3 |
| 653 | Perturbative approach to electrocaloric effects | Graf, Monica; Iniguez, Jorge | In this work we show that, by expressing EC temperature and entropy changes as Taylor series of the applied electric field, one can qualitatively predict and explain all EC effects observed in ferroelectric and antiferroelectric materials. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 654 | Deep Learning of Accurate Force Field of Ferroelectric HfO2 | Wu, Jing; Zhang, Yuzhi; Zhang, Linfeng; Liu, Shi | We developed a deep neural network-based interatomic force field of HfO2, enabling molecular dynamics simulations of this silicon-compitable ferroelectrics at large time and length scales. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 655 | Electron-electron correlations and Higher Harmonic generation in perovskite BaTiO3 | Alam, Didarul; Ud, Naseem; Gholam Mirzaeimoghadar, Shima; Chini, Michael; Turkowski, Volodymyr | We apply the Dynamical Mean-Field Theory+Time-Dependent Density-Functional Theory (DMFT+TDDFT) approach to study the role of strong electron-electron correlations in the high-order harmonic (HH) spectra in perovskite BaTiO 3. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 656 | Methods of Manipulating and Dynamics of Ferroic Order in BiFeO3 | Parsonnet, Eric; Caretta, Lucas; Qualls, Alexander; Gosavi, Tanay; Nikonov, Dmitri; Lin, Chia-Ching; Young, Ian; Bokor, Jeffrey; Martin, Lane; Ramesh, Ramamoorthy | Here we explore the switching dynamics of various ferroic orders in BiFeO3 and coupled BiFeO3/Ferromagnetic heterostructures as well as investigate ways to excite and manipulate low-energy excitations of ferroic order. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 657 | Reversible Redox Properties of Multiferroic Sr1-xBaxMn1-yTiyO2+d | Krivyakina, Elena; Kolesnik, Stanislaw; Li, Cheng; Dabrowski, Bogdan; Rosenkranz, Stephan; Chmaissem, Omar | We report the phase transformations under various conditions of manganese-based multiferroic perovskite materials with 6% titanium-doping at the magnetic B site in Sr 1-xBa xMn 1-yTi yO 2+ d (with d ~ 0.4 – 1). | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 658 | Switchable photovoltaic properties in PZT epitaxial thin films | Rani, Komalika | In this work, a careful study of the switchability of the PV properties of epitaxial lead zirconate titanate thin films has been conducted in order to investigate the role played by the ferroelectric polarization. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 659 | Enhanced Tunneling Electroresistance in MoS2-Hf0.5Zr0.5O2-W Heterojunctions | Chaudhary, Pradeep; Buragohain, Pratyush; Chouprik, Anastasia; Lipatov, Alexey; Sinitskii, Alexander; Zekenvich, Andrei; Gruverman, Alexei | Here, we report the polarization-controlled TER of up to 10 5 % in Hf 0. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 660 | Multiscale Electric Field Imaging in Ferroelectric Vortices | Addiego, Christopher; Gao, Wenpei; Pan, Xiaoqing | Using a highly convergent electron probe in a scanning transmission electron microscope with sub-Å resolution, we have studied the electric field at the scale of individual atoms and unit cells, revealing a different pattern in the local electric field than what is observed when using a nanometer scale probe. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 661 | Band-Mott mixing hybridizes the gap in Fe2Mo3O8 | Park, Kiman; Pascut, Gheorghe; Khanal, Ghanashyam; Yokosuk, Michael; Xu, Xianghan; Gao, Bin; Gutmann, Matthias; Litvinchuk, Alexander; Kiryukhin, Valery; Cheong, Sang-Wook; Vanderbilt, David; Haule, Kristjan; Musfeldt, Janice | We combine optical spectroscopy and first-principles electronic structure calculations to reveal the microscopic character of the charge gap in polar magnet Fe 2Mo 3O 8. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 662 | Theoretical investigation of ferroelectric switching in La-doped BiFeO3 | Fedorova, Natalya; Nikonov, Dmitri; Young, Ian; Iniguez, Jorge | We combine phenomenological Landau-Devonshire (LD) theory and density functional theory (DFT) to investigate the effect of La doping on the structural and dynamic properties of La xBi 1-xFeO 3 (LBFO). | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 663 | Optimization of artificial antiferroelectrics from second-principles simulations | Aramberri, Hugo; Fedorova, Natalya; Iniguez, Jorge | In this talk I will summarize our most recent findings. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 664 | Atomistic calculations of elastocaloric effects in ferroelectric materials | Murillo Navarro, Diana Elisa; Graf, Mónica; Iniguez, Jorge | Here we introduce a theoretical approach to compute and analyze the elastocaloric response from atomistic simulations and present our results for PbTiO 3. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 665 | Polarized Raman spectroscopy on epitaxial barium titanate thin films on silicon | Schmitt, Sebastian; Olaniyan, Israel Ibukun; Magen, Cesar; Schamm-Chardon, Sylvie; Dubourdieu, Catherine | Here we show, how a proper alignment of sample axis, polarizers and analyzers permits to fully suppress Raman scattering from the Si substrate and enables the recording of polarized Raman spectra from thin BTO films on Si. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 666 | Atomic and Electronic Structure Changes Underlying Votex Polarization Domains in Hexagonal RMnO3 | Tyson, Trevor; Liu, Sizhan; Sadowski, Jerzy; Newville, Matthew; Lanzirotti, Antonio; Cheong, Sang-Wook | Atomic and Electronic Structure Changes Underlying Votex Polarization Domains in Hexagonal RMnO3 | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 667 | Angular Dependence of Surface Energy with Crystal Directions of LiNbO3 (110) for Nano-BondingTM to Si and α-quartz SiO2 | Elison, Abbie; Sahal, Mohammed; Prakash, Shefali; Swaminathan, Srivatsan; Rane, Riley; Baker, Brian; Narayan, Saaketh; Kintz, Jacob; Yano, Aliya; Brimhall, Alex; Puglisi, Lauren; Culbertson, Robert; Herbots, Nicole | Instead, this work uses Nano-Bonding TM, 1 (NB) and Surface Energy Engineering to modify surface energies into ‘far-from-equilibrium’ states so that when nano-contacted, a 2D-precursor phase forms to catalyze bonding. | Session 54: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -4 |
| 668 | From magnetoelectric response to optical activity | Mahon, Perry; Sipe, John | We apply a microscopic theory of polarization and magnetization to crystalline insulators at zero temperature, and consider the orbital electronic contribution of the linear response to non-uniform and non-static electromagnetic fields. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 669 | Tunable, ferroelectricity-inducing, spin-spiral magnetic ordering in monolayer FeOCl | Bao, Deliang; O’Hara, Andrew; Pantelides, Sokrates | Using density functional theory, we demonstrate that SS ordering, found in bulk FeOCl, also exists in ML FeOCl whose synthesis was recently reported. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 670 | First experimental tests towards cavity-enhanced ferroelectricity | Korosec, Lukas; Fowlie, Jennifer; Mazza, Giacomo; Triscone, Jean-Marc | Our project aims to modify physical properties of functional materials using this phenomenon. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 671 | Band gap narrowing in ferroelastic twin walls at CaTiO3(001) surface | Barrett, Nicholas; Wu, Qiang; Martinotti, Dominique; Salje, Ekhard; Lubin, Christophe; Geneste, Gregory | Band gap narrowing in ferroelastic twin walls at CaTiO3(001) surface | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 672 | Photoinduced strain in ferroelectric-based cantilevers | Gable, Stéphane | In this work, the interplay between the electric polarization and the photoinduced strain is investigated in PZT epitaxial-based cantilevers. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 673 | Creation of a Monolayer Ferroelectric using Substitutional Impurities | Richardson, Nicholas; O’Hara, Andrew; Pantelides, Sokrates | We performed density-functional-theory calculations to explore inducing ferroelectricity through incorporation of isovalent substitutional impurities that are larger than the host atoms. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 674 | Low-Dimensional Noncollinear Ferroelectricity in Group-VI Oxyhalides | Lin, Ling-Fang; ZHANG, YANG; Moreo, Adriana; Dagotto, Elbio; Dong, Shuai | Low-Dimensional Noncollinear Ferroelectricity in Group-VI Oxyhalides | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 675 | Effects of ferroelectric displacement and octahedral rotations on the electronic structure of BiFeO3 | Laraib, Iflah; Carniero, Marciano; Janotti, Anderson | We find the band gap decreases from 3.4 eV for the R3c, to 2.9 eV for the R-3c, and to 1.6 eV for the cubic BiFeO 3, by significant lowering of the conduction band and slight raising of the valence band. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 676 | Circular photogalvanic effect in inversion symmetric crystal: the case of ferro-rotational order in Ta2NiSe5 | Jog, Harshvardhan; Harnagea, Luminita; Mele, Eugene; Agarwal, Ritesh | We use circular photogalvanic effect (CPGE), and by eliminating any lower-order contributions using symmetries of the system, show that ferro-rotational order can be directly probed. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 677 | Anisotropic and electric-field dependent heat conduction in CuO | Akopyan, Artem; Prasai, Narayan; Rebello, A.; Neumeier, John; Cohn, Joshua | b We will discuss the temperature and electric field dependent thermal conductivity (κ) measured on high-quality single crystals c along the principal crystallographic axes. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 678 | Phono-magnetic analogs to opto-magnetic effects | Juraschek, Dominik; Narang, Prineha; Spaldin, Nicola | Here, we theoretically describe phonon analogs of these effects, in which coherently excited infrared-active phonons replace photons in the scattering process, which is mediated through spin-phonon coupling. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 679 | A room-temperature ferroelectric semimetal | Sharma, Pankaj | Here, we provide evidence that native metallicity and ferroelectricity coexist in bulk crystalline van der Waals WTe2. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 680 | An investigation into the multiferroic properties of LuFe2O4 based systems under the influence of electron-hole doping | Das, Hena | We, therefore, have studied the bulk LuFe 2O 4 under the influence of electron-hole doping to gain further insight into the interesting quantum phenomena in these systems. | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 681 | Orbital Moment enhanced novel giant magnetoelectric of Fe2Mo3O8 | Zhang, Lunyong; Pascut, Gheorghe; Gao, Bin; Agrestini, Stefano; Valvidares, Manuel; hu, zhiwei; Cheong, Sang-Wook | To shed new light in this direction, we have investigated the electronic and magnetic properties of Fe 2Mo 3O 8 by element-selective X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism spectroscopy (XMCD). | Session 55: Multiferroics, Magnetoelectrics, Spin-Electric Coupling, and Ferroelectrics -5 |
| 682 | Multipolar magnetism in d-orbital systems: Crystal field levels, octupolar order, and orbital loop currents | Voleti, Sreekar; Maharaj, Dalini; Gaulin, Bruce; Luke, Graeme; Paramekanti, Arun | Our work highlights the intimate connection between the physics of heavy transition metal oxides and that of f-electron based heavy fermion compounds. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 683 | 4d/5d Row Transition Metal Oxide d-Orbital Systematics by X-Ray Absorption Near Edge Spectra (XANES) | Kurywczak, Eric; Sahiner, Mehmet; Croft, Mark | We have used non-linear least-squares fitting across the near-edge region of various 4 d row and 5 d row TM oxides in order to investigate the systematics of their d-orbital occupancies and the XANES white line features for t 2g and e g symmetry orbitals. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 684 | Diamagnetic d10 and d0 cations direct magnetic interactions in double perovskites | Mustonen, Otto; Pughe, Charlotte; Walker, Helen; Mutch, Heather; Stenning, Gavin; Coomer, Fiona; Cussen, Edmund | Here we formulate simple rules for this d 10/d 0 effect in A 2B’B”O 6 double perovskite oxides. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 685 | Structural and magnetic properties in a planar antiferromagnet | Chen, Xiang; He, Yu; Wu, Shan; Song, Yu; Yuan, Dongsheng; Bourret-Courchesne, Edith; Ruff, Jacob; Islam, Zahir; Frano, Alex; Birgeneau, Robert | Our study presents valuable information for understanding the structural and magnetic properties in this new barium iridium oxides. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 686 | Competing magnetic interactions in Sr3(Ru1-xMnx)2O7 | Nepal, Roshan; Xing, Lingyi; Jin, Rongying | Competing magnetic interactions in Sr3(Ru1-xMnx)2O7 | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 687 | Large spin-driven dielectric response and magnetoelectric coupling in the buckled honeycomb Fe4Nb2O9 | Cao, Huibo; DING, LEI; Lee, Minseong; Choi, Eun Sang; Wu, Yan; Sinclair, Ryan; Chakoumakos, Bryan; Zhou, Haidong | By combining neutron and x-ray single crystal diffraction, we unambiguously determined its magnetic symmetry and studied the structural phase transition. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 688 | Interplay between local and itinerant magnetism in transition metal oxides: the role of anion magnetism | M J, Swamynadhan; Shin, Donghan; O’Hara, Andrew; Ghosh, Saurabh; Pantelides, Sokrates | We examine the local spin density of states, radial dependence of magnetization, and strain sensitivity. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 689 | Multipolar orders in d-orbital systems | Paramekanti, Arun | In this talk, I will discuss our recent theoretical proposal for Ising octupolar order in d-orbital systems, which explains a wide range of experiments in certain 5d transition metal oxides with spin-orbit coupling. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 690 | Neutron scattering study of Na2Co2TeO6 single crystals | Yao, Weiliang; Li, Yuan; Iida, Kazuki; Kamazawa, Kazuya | In this talk, we will present its magnetic excitation spectrum and make the comparison to other honeycomb magnets, in order to assess the prominence of Kitaev physics in this system. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 691 | Probing quantum spin liquids in equilibrium using the inverse spin Hall effect | Aftergood, Joshua; Takei, So | We propose a strongly spin-orbit coupled metal to quantum magnet bilayer as a probe of quantum magnets lacking long range magnetic order, e.g., quantum spin liquids (QSLs), via examination of the voltage noise spectrum in the metal layer. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 692 | Competing energetic states in γ-Fe2WO6 with strong spin-charge-lattice coupling | Sretenovic, Milos; Okamoto, Satoshi; Peiker, Gordon; Tang, Xudong; Zhang, Heda; Xu, CQ; Heitmann, Thomas; Dela Cruz, Clarina; Ke, Xianglin | We report magnetic and electronic properties of γ-Fe 2WO 6 via neutron powder diffraction measurements and first-principles density function theory calculations. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 693 | Structure of the magnetic order induced by Ti-doping in Sr2RuO4 | Zinkl, Bastian; Sigrist, Manfred | We consider a microscopic model for these two bands and explore the formation of magnetic order through doping with non-magnetic impurities. | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 694 | Competition of three-dimensional magnetic phases in Ca$_2$Ru$_{1-x}$Fe$_x$O$_4$: A structural perspective | Chi, Songxue; Ye, Feng; Cao, Gang; Cao, Huibo; Fernandez-Baca, Jaime | Competition of three-dimensional magnetic phases in Ca$_2$Ru$_{1-x}$Fe$_x$O$_4$: A structural perspective | Session 56: Multipolar and Novel Magnetic Orders in Complex Oxides |
| 695 | Materials for nanoscale spatial control of ferromagnetic phase transitions | Fallarino, Lorenzo | Multilayer structures have revealed an impressive variety of collective properties, and they represent an established approach to materials design with widespread applications [1]. | Session 57: Nanoscale Designed Magnetic Films |
| 696 | Controlling magnetic configuration in the soft/hard bilayers probed by PNR | Tang, Nan; Gilbert, Dustin; Kirby, Brian | Here, we present polarized neutron reflectometry (PNR) to experimentally study magnetic configurations in hard/soft bilayers. | Session 57: Nanoscale Designed Magnetic Films |
| 697 | Magnetic Modulation In Ferrimagnetic Fe1-XGdx Thin Film Multilayer Structures By Variation of Compensation Temperature | Shoup, Jenae; Kirby, Brian; Arena, Dario | The magnetic interface of such structures is undetermined and we will use polarized neutron reflectometry (PNR) to examine spin ordering in the interfacial region as a function of field and temperature. | Session 57: Nanoscale Designed Magnetic Films |
| 698 | In-Depth Structural and Magnetic Characterizations of Fe and CrN Bilayer System | Alam, Khan; Smith, Arthur; Sun, Kai; Foley, Andrew | In this project, we grow high quality epitaxial Fe/CrN bilayer thin films on MgO(001) by molecular beam epitaxy. | Session 57: Nanoscale Designed Magnetic Films |
| 699 | Magneto-ionic Enhancement of Exchange Bias in MnN/CoFe | Jensen, Christopher; Quintana, Alberto; Quarterman, Patrick; Grutter, Alexander; Liu, Kai | 2 We have investigated nitrogen-ion induced exchange bias effects in MnN/CoFe films grown on a Ta seed layer. | Session 57: Nanoscale Designed Magnetic Films |
| 700 | Nanoscale manipulation of magnetic domains by strain-induced proximity | Batlle, Xavier; Valmianski, Ilya; Fraile Rodríguez, Arantxa; Rodriguez Alvarez, Javier; Garcia del Muro, Montserrat; Wolowiec, Christian; Kronast, Florian; Ramirez, Juan; Schuller, Ivan; Labarta, Amílcar | By synchrotron-based X-ray microscopy we show a reconfiguration of the FM domain pattern across the V 2O 3 SPT. | Session 57: Nanoscale Designed Magnetic Films |
| 701 | Observations of Exchange Bias in Patterned Bilayers using Three-Axis Torque Magnetometry. | Thibault, John; Fast, Katryna; Sauer, Vince; Dunsmore, Michael; Losby, Joe; Diao, Zhu; Luber, Eric; Belov, Miro; Freeman, Mark | We report studies of exchange bias in circular disk bilayers of 20nm Permalloy/20nm cobalt oxide, lithographically patterned on nanomechanical resonators. | Session 57: Nanoscale Designed Magnetic Films |
| 702 | First-principles calculations of spin-orbit torques in a Mn2Au/HM bilayer | Fang, Wuzhang; Belashchenko, Kirill | In this work, by using first-principles calculations, we calculate the SOTs of a Mn 2Au/HM bilayer, where HM is W or Pt. | Session 57: Nanoscale Designed Magnetic Films |
| 703 | Spin-reorientation transition in an Fe double-layer on W(110) induced by Dzyaloshinsky-Moriya interaction | Nagyfalusi, Balázs; Udvardi, László; Szunyogh, László; Rozsa, Levente | In this talk present a study of the temperature-driven spin reorientation transition in two atomic layers of Fe on W(110) using well-tempered metadynamics simulations based on a spin model parametrized by ab initio calculations. | Session 57: Nanoscale Designed Magnetic Films |
| 704 | Structural and Magnetotransport Properties of Epitaxial Ferrimagnetic Mn4N Thin Films on GaN by Plasma-assisted Molecular Beam Epitaxy | Zhang, Zexuan; Cho, Yongjin; Chang, Celesta; Gong, Mingli; Ho, Shaoting; Singhal, Jashan; Xing, Huili; Jena, Debdeep | Here we report integration of Mn 4N on GaN with smooth surface by plasma assisted molecular beam epitaxy. | Session 57: Nanoscale Designed Magnetic Films |
| 705 | Temperature-dependent magnetic transitions in CoCrPt-Ru-CoCrPt synthetic ferrimagnets (SFM) | Beauchamp, Bradlee; Marinero, Ernesto | In this work we expand the framework to include synthetic ferrimagnets (SFMs) comprising higher perpendicular magnetic anisotropy materials and large (4X) interlayer exchange coupling energies which are promising for the development of ultrafast (ps) magnetic switching free layers in MTJ structures. | Session 57: Nanoscale Designed Magnetic Films |
| 706 | Electric-field control of ferromagnetic regions to form intrinsic tunnel junctions in dynamically phase separated manganites | Shakya, Ambika; Biswas, Amlan | We have observed tunneling magnetoresistance (TMR) behavior in the magnetic easy as well as hard axis directions of LPCMO. | Session 57: Nanoscale Designed Magnetic Films |
| 707 | Site preference and magnetic properties of Mn substituted M-type strontium hexaferrite | Lamichhane, Bipin; Thapa, Dinesh; Nandadasa, Chandani; Choi, Minyeong; Hong, Yang-Ki | In this work, we use Mn to substitute Fe for possible technical applications. | Session 57: Nanoscale Designed Magnetic Films |
| 708 | Molecular Orbitals from Chemical Pressure in Ag3LiIr2O6 | Plumb, Kemp | In this talk, I will discuss a series of x-ray spectroscopy measurements on Ag 3LiIr 2O 6 that reveal a strong modification of the Ir electronic structure from the parent α-Li2IrO6 such that a delocalized, molecular orbital picture is more appropriate for Ag 3LiIr 2O 6. | Session 58: New Kitaev Magnets |
| 709 | Novel probe of the spatial distribution of the low-energy spin excitations in spin liquid candidate materials with disorder: inverse Laplace transform (ILT) T1 analysis of the NMR spin-lattice relaxation rate 1/T1 | Imai, Takashi | In this talk, we will introduce the novel approach based on the inverse Laplace transform (ILT) T 1 analysis techniques [1,2]. | Session 58: New Kitaev Magnets |
| 710 | Intercalated Kitaev magnets in the clean and disordered limits | Tafti, Fazel; Bahrami, Faranak; Kenney, Eric; Abramchuk, Mykola; Graf, Michael; Haskel, Daniel; Segre, Carlo; Berlie, Adam; Wang, Chennan | Here we present a careful overview of the properties of these materials and compare their magnetic behaviors in the clean and disordered limits. | Session 58: New Kitaev Magnets |
| 711 | Disorder effects in the Kitaev spin liquid | Perkins, Natalia; Kao, Wen-Han; Knolle, Johannes; Halász, Gábor; Moessner, Roderich | In my talk I will discuss the role of disorder in the Kitaev spin liquid and its relevance to the experimental observations in H3LiIr2O6 [3,4]. | Session 58: New Kitaev Magnets |
| 712 | First principles calculations on chemically intercalated honeycomb Kitaev materials | Li, Ying; Bahrami, Faranak; Johnson, Roger; Coldea, Radu; Tafti, Fazel; Winter, Stephen; Valenti, Roser | In this talk, we will discuss the role of inter- and intra-layer chemical intercalation on the electronic and magnetic properties of some representative families from first principles calculations, model considerations and comparison with experiment. | Session 58: New Kitaev Magnets |
| 713 | Direct Imaging of Orbitals in Quantum Materials: ground state and excited states | Tjeng, Liu; Leedahl, Brett; Amorese, Andrea; Sundermann, Martin; Yavas, Hasan; Gretarsson, Hlynur; Severing, Andrea; Haverkort, Maurits | Recently we have developed a new experimental method that can make a direct image of the ground state d-orbitals in transition metal compounds [1,2]. | Session 59: New Probes of Correlated Oxides |
| 714 | Acoustic Magnon hybridized with Orbital on Multiferroics Ba2MnGe2O7 | Hasegawa, Shunsuke; Hayashida, Shohei; Asai, Shinichiro; Matsuura, Masato; Masuda, Takatsugu | Here we demonstrate that the acoustic magnon in multiferroics Ba 2MnGe 2O 7 [1-3] is hybridized with orbitals by measuring the temperature variations of magnetization curves and neutron scattering spectra. | Session 59: New Probes of Correlated Oxides |
| 715 | Imaging the impact of atomic-scale disorder and temperature fluctuations on antiferromagnetic ordering in iridates | Zeljkovic, Ilija | We use spin-polarized scanning tunneling microscopy (SP-STM) to visualize spin-resolved modulations arising from the antiferromagnetic (AF) order in doped Mott insulators Sr 2IrO 4 and Sr 3Ir 2O 7. | Session 59: New Probes of Correlated Oxides |
| 716 | Onset of two-dimensional Stoner magnetism in cobalt arsenides | Ueland, Benjamin; Li, Bing; Pakhira, Santanu; Sapkota, Aashish; Nediadath Sathyanadhan, Sangeetha; Perring, Toby; Johnston, David; McQueeney, Robert | We find diffuse spin fluctuations giving rise to walls of magnetic scattering with similar anisotropy to that found for x = 0, however, the fluctuating moment is extremely weak. | Session 59: New Probes of Correlated Oxides |
| 717 | Strong fluctuations and itinerant magnetic frustration in a multiorbital model for SrCo2As2 | Nedic, Ana-Marija; Christensen, Morten Holm; Lee, Yongbin; Fernandes, Rafael; McQueeney, Robert; Ke, Liqin; Orth, Peter | To understand these puzzling observations, we investigate a realistic interacting multi-orbital model for SrCo2As2 that takes both Co d-orbitals and As p-orbitals into account. | Session 59: New Probes of Correlated Oxides |
| 718 | Coherent spin dynamic of strongly correlated defects in spin chains. | Bertaina, Sylvain; Soriano, Loic; zeisner, julian; kataev, Vladislav; Vezin, Hervé; Fourmigué, Marc; Orio, Maylis | We propose a new paradigm: a non-magnetic defect, like a break in the translational symmetry of Heisenberg’s spin chain, polarized many spins around it. | Session 59: New Probes of Correlated Oxides |
| 719 | Ultrafast Mid Infrared Pump-Optical Kerr Probe of Correlated Mott-Hubbard Antiferromagnets | Ali, Mustafa G; Kaj, Kelson; Ramaprasad, Varun; Zhang, Gufeng; Chen, Xiang; Seifert, Urban; Zhang, Jingdi; Cremin, Kevin; Balents, Leon; Wilson, Stephen; Averitt, Richard | We utilize intense ultrafast mid-infrared (mid-IR) circularly polarized pump pulses to preferentially excite spin degrees of freedom through coherent two-magnon excitation as measured via the magneto-optic Kerr effect using 800 nm pulses. | Session 59: New Probes of Correlated Oxides |
| 720 | Time-Domain THz studies of antiferromagnetic Bi2CuO4 | Bhandia, Rishi; Berry, Tanya; Phelan, William; McQueen, Tyrel; Armitage, Peter | We present the results of time-domain THz studies of single crystals of Bi2CuO4 grown via the traveling solvent technique in a laser floating zone furnace . | Session 59: New Probes of Correlated Oxides |
| 721 | High-resolution AC Calorimetry Measurement of Honeycomb magnet Na2Co2TeO6 | Hu, Zhenhai; Li, Yuan; Lin, Xi | We find an unexpected small heat-capacity peak at low temperature and in zero magnetic field. | Session 59: New Probes of Correlated Oxides |
| 722 | Magnetoelastic standing waves induced in UO2 by microsecond magnetic field pulses | Jaime, Marcelo; Schoenemann, Rico; Rodriguez, George; Rickel, Dwight; Balakirev, Fedor; McDonald, Ross; Evans, Jordan; Maiorov, Boris; Paillard, Charles; Bellaiche, Laurent; Salamon, Myron; Gofryk, Krzysztof | We performed magnetoelastic measurements of the piezomagnetic antiferromagnet UO 2 via the Fiber Bragg Grating method in pulsed magnetic fields up to 150 T generated by a single-turn coil setup. | Session 59: New Probes of Correlated Oxides |
| 723 | High-resolution angle-resolved photomission study of CeSb2 | Wang, Xiaoxiao; Chen, Xiaoyang; Fang, Yifei; Jin, Xiaobo; Xu, Haichao; Peng, Rui; Feng, Donglai | Here, we performed the angular-resolved photomission spectroscopy (ARPES) of CeSb 2 and obtained the 3D electronic structure of CeSb 2 for the first time by applying the changeable photon energy. | Session 59: New Probes of Correlated Oxides |
| 724 | Chiral multi-spin multi-site interactions | Brinker, Sascha; dos Santos Dias, Manuel; Lounis, Samir | Here, we discuss our systematic construction of a generalized spin model containing isotropic and chiral multi-site interactions [1,2]. | Session 60: Novel Topological Spin Textures |
| 725 | Doping effects and higher-order magnetic interactions in skyrmionic B20 compounds | Borisov, Vladislav; Ntallis, Nikolaos; Kvashnin, Yaroslav; Thonig, Danny; Pereiro, Manuel; Bergman, Anders; Sjöqvist, Erik; Delin, Anna; Nordström, Lars; Eriksson, Olle | Using the magnetic force theorem, we obtain a detailed picture of magnetic interactions, including Heisenberg, Dzyaloshinskii-Moriya (DM), and symmetric anisotropic exchange. | Session 60: Novel Topological Spin Textures |
| 726 | Spin Moiré Engineering of Emergent Electromagnetism | Shimizu, Kotaro; Okumura, Shun; Kato, Yasuyuki; Motome, Yukitoshi | We find that the manipulation of the Moiré patterns by the angles between the superposed helices and the net magnetization yields successive topological transitions associated with pair annihilation of topological defects called hedgehogs and antihedgehogs. | Session 60: Novel Topological Spin Textures |
| 727 | Chiral magnetism: a geometric perspective | Hill, Daniel; Tchernyshyov, Oleg; Slastikov, Valeriy | Chiral magnetism: a geometric perspective | Session 60: Novel Topological Spin Textures |
| 728 | Magnetic textures with particle properties beyond skyrmions: chiral bobbers, globules, and hopfions | Kiselev, Nikolai S. | I will present the micromagnetic functional [8] and magnetic interactions allowing the stability of these objects and discuss some static and dynamic properties of these objects. | Session 60: Novel Topological Spin Textures |
| 729 | Experimental observation of magnetic hopfions in multilayer disks | Kent, Noah; Reynolds, Neal; Raftrey, David; Campbell, Ian; Virasawmy, Selven; Dhuey, Scott; Chopdekar, Rajesh; Hierro-Rodriguez, Aurelio; Sorrentino, Andrea; Pereiro, Eva; Ferrer, Salvador; Hellman, Frances; Sutcliffe, Paul; Fischer, Peter | We present experimental evidence of magnetic Hopfions in magnetic Ir/Co/Pt multilayers shaped into nanoscale disks, which are known to host TSks 5. | Session 60: Novel Topological Spin Textures |
| 730 | Ultrafast spin dynamics in Magnetic Hopfions | Raftrey, David; Fischer, Peter | Here, we present results from micromagnetic simulations using mumax3 implemented at the HPC Lawrencium supercluster at Berkeley Lab. | Session 60: Novel Topological Spin Textures |
| 731 | Antiferromagnetic Half-skyrmions and Bimerons at room temperature | Jani, Hariom; Lin, Jheng-Cyuan; Chen, Jiahao; Harrison, Jack; Maccherozzi, Francesco; Schad, Jonathon; Prakash, Saurav; Eom, Chang-Beom; Ariando, Ariando; Venkatesan, Thirumalai; Radaelli, Paolo G. | Here, we demonstrate a family of topological antiferromagnetic spin-textures in α-Fe 2O 3 – an earth-abundant oxide – capped with a Pt over-layer. | Session 60: Novel Topological Spin Textures |
| 732 | Designing inverse-Heusler antiskyrmion hosts by chemically tailoring the effective magnetic Hamiltonian | Kitchaev, Daniil; Van der Ven, Anton | We construct a universal model relating mesoscale magnetic phase behavior to atomistic interactions and map out the magnetic behavior of a wide range of candidate chemistries to identify compositions yielding the precise magnetic Hamiltonian necessary for antiskyrmion formation. | Session 60: Novel Topological Spin Textures |
| 733 | Magnetic vortex-antivortex pairs in the magnetic stripe domain pattern: magnetization reversal and topology. | Velez, Maria; Hierro-Rodriguez, Aurelio; Fernandez, Victoria Vega; Hermosa, Javier; Quiros, Carlos; Sorrentino, Andrea; Alvarez Prado, Luis Manuel; Martín, Jose I.; Pereiro, Eva; Ferrer, Salvador | In this work, we will present the analysis of topological charge transformations during the nucleation/propagation process based on micromagnetic simulations of NiFe/NdCo/NiFe multilayers and experimental 3D magnetization maps obtained from X-ray vector magnetic tomography of NiFe/NdCo/NiFe trilayers [2,3]. | Session 60: Novel Topological Spin Textures |
| 734 | Topological transport of deconfined hedgehogs in magnets | Zou, Ji; Zhang, Shu; Tserkovnyak, Yaroslav | We theoretically investigate the dynamics of magnetic hedgehogs, which are three-dimensional topological spin textures that exist in common magnets, focusing on their transport properties and connections to spintronics. | Session 60: Novel Topological Spin Textures |
| 735 | Deformation of spin-hedgehog lattice in MnGe | Kitaori, Aki; Kanazawa, Naoya; White, Jonathan; Ukleev, Victor; Ronnow, Henrik; Tsukazaki, Atsushi; Ichikawa, Masakazu; Kawasaki, Masashi; Tokura, Yoshinori | We observe a dramatic change in the Hall effect upon the transformation of a spin hedgehog crystal in MnGe through combined measurements of magnetotransport in single crystals and small-angle neutron scattering (SANS) [3]. | Session 60: Novel Topological Spin Textures |
| 736 | Magneto-transport and magnetic ordering in the intercalated transition metal dichalcogenides. | Mayoh, Daniel; Hall, Amelia; Holt, Sam; Lees, Martin; Balakrishnan, Geetha | We present our recent studies of the magneto-transport properties and magnetic state in these TMDCs where several different magnetic atoms (Cr, Mn, V) have been intercalated. | Session 60: Novel Topological Spin Textures |
| 737 | Canted Spin Texture and Quantum Spin Hall Effect in WTe2 | Garcia Aguilar, José; Vila, Marc; Hsu, Chuang-Han; Waintal, Xavier; Pereira, Vitor; Roche, Stephan | We report an unconventional quantum spin Hall phase in the monolayer Td-WTe 2, which exhibits hitherto unknown features in other topological materials. | Session 61: Novel Topological and Magnetic Materials |
| 738 | Phononic control of magnetism in a topological insulator | Padmanabhan, Hari; Koocher, Nathan; Kim, Peter; Poore, Maxwell; Stoica, Vladimir; Puggioni, Danilo; Wang, Huaiyu; Lee, Seng Huat; Wetherington, Maxwell; Schaller, Richard; Averitt, Richard; Rondinelli, James; Gopalan, Venkatraman | In this work, we demonstrate for the first time, the optical control of magnetism in a topological insulator. | Session 61: Novel Topological and Magnetic Materials |
| 739 | Anomalous Hall effect in ferromagnetic semiconductors: the case of Ga1-xMnxAs1-yPy | Liu, Xinyu; Riney, Logan; Wang, Jiashu; Dong, Sining; Guo, Lei; Zheng, Ren-Kui; Li, Xiang; Bac, Seul-Ki; Kossut, Jacek; Dobrowolska, Malgorzata; Furdyna, J; Hsu, Yi-Ting; Assaf, Badih | By applying a modified Brillouin-Weiss model for the magnetization, we decompose the AHE into an “extrinsic” contribution (due to scattering) and a dominating “intrinsic” contribution (due to the Berry curvature). | Session 61: Novel Topological and Magnetic Materials |
| 740 | Orbital hybridization in the spin-glass state of Mn-doped ZnTe | Alcantara, Alexandria; Barrett, Steven; Matev, Dina; Miotkowski, Ireneusz; Ramdas, Anant; Pekarek, Thomas; Haraldsen, Jason | From our analysis of the electronic structure evolution with doping and onsite potential, we confirm the semiconducting state of the material as well as show that Te-Mn pd-orbital hybridization is activated with the Mn doping above 25%, which is around the doping when the spin-glass transition begins to rise, which could be a precursor to the spin-glass state. | Session 61: Novel Topological and Magnetic Materials |
| 741 | Phonon vibration modes of layered MnBi2nTe3n+1 (n=1,2,3,4) topological heterostructures | Cho, Yujin; Kang, Jin Ho; Liang, Liangbo; Puretzky, Alexander; Kong, Xiangru; Ghosh, Subhajit; Kargar, Fariborz; Hu, Chaowei; Ni, Ni; Balandin, Alexander; Geohegan, David; Wong, Chee Wei | In this talk, we present the phonon modes of bulk MnBi 2nTe 3n+1 (n=1,2,3,4) at various temperatures and polarization configurations, using optical Raman spectroscopy. | Session 61: Novel Topological and Magnetic Materials |
| 742 | Prediction of momentum dependent spin splitting in low-Z collinear and noncollinear antiferromagnets even without spin-orbit coupling | Yuan, Linding; Wang, Zhi; Luo, Jun-Wei; Rashba, Emmanuel; zunger, alex | We identify the magnetic symmetry conditions that produce AFM prototypes having spin splitting even without external magnetic field and even when the SOC is set to zero. | Session 61: Novel Topological and Magnetic Materials |
| 743 | Experimental Signatures of Ground State and Photoexcited Edge Magnetism in Phosphorene Nanoribbons | Ashoka, Arjun; Howard, Christopher; Rao, Akshay; Pandya, Raj | Using polarisation sensitive pump-probe spectroscopy with sub-1T magnetic fields we demonstrate signatures of room temperature ground state ferromagnetism in these materials via a magnetic field-induced anisotropy. | Session 61: Novel Topological and Magnetic Materials |
| 744 | Spin Texture Probed with Magnetoresistance in Ferromagnetic EuO1-x Thin Films | Shrestha, Narendra; Tang, Jinke | At present significant research effort is being placed in the study of topological particle-like magnetic skyrmions for electronic and spintronic applications. | Session 61: Novel Topological and Magnetic Materials |
| 745 | Dielectric and magnetic properties | USMAN, AYESHA; Kayani, Zohra | Dielectric and magnetic properties | Session 61: Novel Topological and Magnetic Materials |
| 746 | Computational investigation of the spin-1 state of Ti-doped CdSe | Dimuna, John; Boyett, Tucker; Miotkowski, Ireneusz; Ramdas, Anant; Pekarek, Thomas; Haraldsen, Jason | Using computational and experimental techniques, we examine the 2+ oxidation state of Ti when doped into CdSe. | Session 61: Novel Topological and Magnetic Materials |
| 747 | Resonant tunneling anisotropic magnetoresistance induced by magnetic proximity | Shen, Chenghao; Leeney, Timothy; Matos Abiague, Alex; Scharf, Benedikt; Han, Jong E; Zutic, Igor | We reveal that the interplay between Rashba spin-orbit coupling and proximity-induced magnetization in a two-dimensional electron gas leads to peculiar transport properties and large anisotropy of magnetoresistance. | Session 61: Novel Topological and Magnetic Materials |
| 748 | Insights into the local atomic and magnetic structure of MnTe using Magnetic Pair Distribution Technique | Baral, Raju; Frandsen, Benjamin | We report comprehensive atomic and magnetic pair distribution function (PDF) analysis of neutron total scattering data collected from pure and Na-doped MnTe in the temperature range of 2 K – 500 K. | Session 61: Novel Topological and Magnetic Materials |
| 749 | Topologically nontrivial magnetism in Cr2Te3 ultrathin films | Chi, Hang; Ou, Yunbo; Eldred, Tim; Gao, Wenpei; Lauter, Valeria; Dreyer, Michael; Butera, Robert; Coster, George; Rong, Charles; Heiman, Donald; Moodera, Jagadeesh | Topologically nontrivial magnetism in Cr2Te3 ultrathin films | Session 61: Novel Topological and Magnetic Materials |
| 750 | Moiré magnetism | Hejazi, Kasra; Luo, Zhu-Xi; Balents, Leon | We introduce a general framework to study moiré structures of two-dimensional Van der Waals magnets using continuum field theory. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 751 | Magnetism in substitutionally doped TMDs: magnetic ground states and critical temperatures | Tiwari, Sabyasachi; Van de Put, Maarten; Soree, Bart; Vandenberghe, William | In this work, we theoretically model the magnetic structure of TMDs (MoSe 2, WSe 2, MoS 2, WS 2, and MoTe 2) substitutionally doped with all period four metals (Ti, V, Cr, Mn, Fe, Co, and Ni), using a combination of density functional theory and the Monte-Carlo algorithm. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 752 | Magnetic interactions in 2D layered van der Waals semiconductors CrPS4 and MnPSe3 probed with neutron scattering | Calder, Stuart; Haglund, Amanda; Liu, Yaohua; Pajerowski, Daniel; Cao, Huibo; Williams, Travis; Kolesnikov, Alexander; Garlea, Vasile; Mandrus, David | We present results using elastic and inelastic neutron scattering on powder samples that reveal detailed insights into the magnetic interactions in two systems: CrPS 4 and MnPSe 3. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 753 | Theoretical prediction of a two-dimensional in-plane antiferromagnetic insulator | Sarkar, Anan Bari; Ghosh, Barun; Singh, Bahadur; Bhowmick, Somnath; Lin, Hsin; Bansil, Arun; Agarwal, Amit | Here, we predict a thermodynamically stable 2D magnetic material, K 2CoS 2, which retains its in-plane bulk antiferromagnetic (AFM) order down to the monolayer and bilayer limits [1]. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 754 | Layered Antiferromagnetism Induces Large Negative Magnetoresistance in the van der Waals Semiconductor CrSBr | Telford, Evan; Dismukes, Avalon; Lee, Kihong; Cheng, Minghao; Wieteska, Jedrzej; Bartholomew, Amymarie; Chen, Yu-sheng; Xu, Xiaodong; Narayan, Abhay; Zhu, Xiaoyang; Dean, Cory; Roy, Xavier | Here we report the magnetic and electronic properties of CrSBr, an air-stable vdW antiferromagnetic semiconductor that readily cleaves perpendicular to the stacking axis. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 755 | Detecting spin-crossover transitions with two-dimensional materials. | Boix-Constant, Carla; Mañas-Valero, Samuel; Coronado, Eugenio | In this work, we fabricate hybrid van der Waals heterostructures based on SCO and inorganic two-dimensional (2D) materials. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 756 | Exchange-driven magnetostriction in Two-dimensional Magnets | Jiang, Shengwei; Xie, Hongchao; Shan, Jie; Mak, Kin Fai | Here we demonstrate an exchange-driven magnetostriction effect in mechanical resonators made of two-dimensional antiferromagnetic CrI 3. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 757 | Neutron scattering studies of the quasi-2D antiferromagnet CrCl3 | Schneeloch, John; Louca, Despina; Tao, Yu | To elucidate structural and magnetic behavior, we performed neutron scattering experiments on CrCl 3. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 758 | Complex spin dynamics in layered CrBr3 | Siddiqui, Saima; Sklenar, Joseph; Lebedev, Dmitry; Gish, Tyler; Hersam, Mark; Hoffmann, Axel | Towards this end, we investigated the rich spin dynamics in a layered CrBr 3 crystal using magnetic resonance phenomena. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 759 | Observations of layer-dependent spin waves in atomically thin Ising magnets | Xie, Hongchao; Ye, Zhipeng; Ye, Gaihua; Tian, Shangjie; Lei, Hechang; Sun, Kai; He, Rui; Zhao, Liuyan | In this presentation, I will show our experimental findings of spin waves and correspondig selection rules in few-layer CrI 3 using polarization-resolved magneto-Raman spectroscopy and discuss the magnetic field dependence of these spin waves and their responses across the critical magnetic fields. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 760 | Towards predictive models of transition metal intercalation – A study of non-dilute Iron diffusion in 2H-TaS2 | Craig, Isabel; Inzani, Katherine; Griffin, Sinéad | To estimate the diffusive behavior, we construct an on-lattice diffusion model to calculate the diffusion constants at a set of characteristic temperatures and intercalation densities using Kinetic Monte Carlo. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 761 | Interlayer magnetism in Fe3−xGeTe2 | Kong, Xiangru; Nguyen, Giang; Lee, Jinhwan; Lee, Changgu; Calder, Stuart; May, Andrew; Gai, Zheng; Li, An-Ping; Liang, Liangbo; Berlijn, Tom | Interlayer magnetism in Fe3−xGeTe2 | Session 62: Order and Excitations in Van Der Waals Magnets |
| 762 | Effective tuning of magnetic structure in Ni1-xMnxPS3 | Hu, Jin; Basnet, Rabindra; Pandey, Krishna; Acharya, Gokul; Nabi, Md Rafique Un; Wegner, Aaron | Here, we report the tunable magnetic structure in a new class of AFM van-der Waals Ni 1-xMn xPS 3 system. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 763 | Theoretical study on the magnetic structure of few-layer transition metal phosphorus sulfides | Kim, Tae Yun; Park, Cheol-Hwan | In this contribution, we present an in-depth investigation of the magnetic structure of few-layer TMPS 3 based on the results of our first-principles calculations. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 764 | Magnetic order induced polarization anomaly of Raman scattering in 2D magnet CrI3 | Zhang, Yujun | Previous research on the spin-phonon coupling effect mainly focuses on the renormalization of phonon frequency.Here we demonstrate that the Raman polarization selection rules of optical phonons can be greatly modified by the magnetic ordering in 2D magnet CrI 3. | Session 62: Order and Excitations in Van Der Waals Magnets |
| 765 | Perpendicular magnetic anisotropy and low magnetic damping in epitaxial Li0.5Al1.0Fe1.5O4 thin films | Zheng, Xin Yu; Channa, Sanyum; Galazka, Zbigniew; Suzuki, Yuri | In this talk, we present our preliminary results on simultaneously achieving PMA and low damping in spinel oxide Li 0.5Al 1.0Fe 1.5O 4 (LAFO) films grown on (001) oriented MgGa 2O 4. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 766 | Spin-current generation and Spin-Orbit Torque switching in Perpendicularly Magnetized Insulating Ni0.65Zn0.35Fe1.2Al0.8O4 films | Channa, Sanyum; Galazka, Zbigniew; Emori, Satoru; Gray, Matthew; Suzuki, Yuri | In this talk, we demonstrate PMA as well as low damping in spinel ferrite Ni 0.65Zn 0.35Fe 1.2Al 0.8O 4 (NZAFO) films grown on (001)-oriented MgGa 2O 4 (MGO) substrates under tensile strain. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 767 | Magnon transport in three-terminal YIG/Pt nanostructures studied by dc and ac detection techniques | Gückelhorn, Janine; Wimmer, Tobias; Geprägs, Stephan; Huebl, Hans; Gross, Rudolf; Althammer, Matthias | We demonstrate that both techniques are well suited to investigate incoherent magnon transport in these three-terminal devices. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 768 | Coherent ac spin current transmission across an antiferromagnetic CoO insulator | Li, Qian; Yang, Mengmeng; Klewe, Christoph; Shafer, Padraic; N’Diaye, Alpha; Hou, Dazhi; Wang, Tianye; Gao, Nan; Saitoh, Eiji; Hwang, Chanyong; Hicken, Robert; Li, Jia; Arenholz, Elke; Qiu, Ziqiang | Utilizing element- and time-resolved x-ray pump-probe measurements on Py/Ag/CoO/Ag/ Fe 75Co 25/MgO(001) heterostructures, here we demonstrate that a coherent GHz ac spin current pumped by the Py ferromagnetic resonance can transmit coherently across an antiferromagnetic CoO insulating layer to drive a coherent spin precession of the Fe 75Co 25 layer. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 769 | Observation of Antiferromagnetic Magnon Pseudospin Dynamics and the Hanle effect | Wimmer, Tobias; Kamra, Akashdeep; Gückelhorn, Janine; Opel, Matthias; Geprägs, Stephan; Gross, Rudolf; Huebl, Hans; Althammer, Matthias | We observe an oscillation in polarity of the magnon spin signal at the detector as a function of the externally applied magnetic field. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 770 | Novel spin-orbit torque generation at room temperature in an all-oxide epitaxial La0.7Sr0.3MnO3/SrIrO3 system | Huang, Xiaoxi; Sayed, Shehrin; Mittelstaedt, Joseph; Susarla, Sandhya; Karimeddiny, Saba; Caretta, Lucas; Zhang, Hongrui; Gosavi, Tanay; Mahfouzi, Farzad; Sun, Qilong; Ercius, Peter; Kioussis, Nicholas; Salahuddin, Sayeef; Ralph, Daniel; Ramesh, Ramamoorthy | We use spin-torque ferromagnetic resonance to probe the effective magnetization and the SOT efficiency in LSMO/SIO heterostructures grown on STO substrates. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 771 | Optical Measurements of Epitaxially Grown Ferrimagnetic Insulator Thin Films | Nunley, Timothy; Chang, Liang; Guo, Side; Lujan, David; Lee, Shang-Fan; Yang, Fengyuan; Li, Xiaoqin (Elaine) | We investigate Tm 3Fe 5O 12 thin films with atomically sharp interfaces and properties tunable via eptaxial strain. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 772 | Spin Hall magnetoresistance in Pt/hexagonal rare-earth ferrite heterostructures | Li, Jing; Yun, Yu; Xu, Xiaoshan | We report measurements of field-dependent and angle-dependent magnetoresistance from Pt/h-RFeO 3 heterostructures at various temperatures. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 773 | Towards skyrmionic spin textures combined with SrTiO3 two-dimensional electron gases | Moreno, Luis; Mallik, Srijani; Bouzehouane, Karim; Valencia, Sergio; Reyren, Nicolas; Barthélémy, Agnès; Bibes, Manuel | In this presentation we will show that the metal oxide (e.g. AlOx) thus formed can be combined with ferromagnetic and heavy-metal-based ultrathin films to generate various types of magnetization configurations with in-plane or out-of-plane anisotropy, depending on their relative thicknesses. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 774 | Zero-bias Giant Rashba Spin-Orbit Coupling Controlled by Carrier Modulation Layer | Omar, Ganesh Ji; Ariando, Ariando | We use an entirely new model to provide evidence of generating Rashba SOC. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 775 | Magnetic properties of Manganite/Iridate bilayers. | te Velthuis, Suzanne; Rosenkranz, Stephan; Wang, Xiao; Tornos, Javier; Gallego, Fernando; Keavney, David; Freeland, John; Choi, Yongseong; Strempfer, Joerg; Haskel, Daniel; Kirby, Brian; Charlton, Timothy; Santamaria, Jacobo | To probe the influence of SOC at 3d-5d complex oxide interfaces, we have investigated ferromagnetic La 0.7Sr 0.3MnO 3/SrIrO 3 bilayers deposited on SrTiO 3. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 776 | High-quality single-crystalline Europium iron garnet films with perpendicular magnetic anisotropy by sputtering | Guo, Meng-Xin; Liu, Y.C.; Wu, Chi-Nan; Cheng, C. K.; Chen, W. N.; Chen, Tian-Yue; Zhou, S.Q.; Pai, Chi-Feng; Lee, Shang-Fan; Hong, Minghwei; Kwo, Jueinai | We demonstrate the high-quality europium iron garnet (EuIG) thin films with strain-induced perpendicular magnetic anisotropy (PMA) grown on GGG (001) using an off-axis sputtering technique. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 777 | SrTiO3-based 2-dimensional electron gases for ultralow power spintronics | Bibes, Manuel | I will present results from both spin-charge conversion where spins are injected by spin pumping in a FMR cavity and detected as a transverse voltage 1, and from charge-spin conversion probed through the bilinear magnetoresistance (BMR) effect. | Session 63: Oxide Thin Films for Spintronics and Magnonics |
| 778 | Complex anisotropic magnetic phase diagram of EuGa2Al2 | Allen, Kevin; Moya, Jaime; Lei, Shiming; Morosan, Emilia | In this contributing, we study such emergent competition in EuGa 2Al 2 as a function of magnetic field and temperature. | Session 64: Phase Transition and Spin Glass |
| 779 | Finite-temperature dynamics and the role of disorder in nearly-critical Ni(Cl1-xBrx)24SC(NH2)2 | Facheris, Leonardo; Blosser, Dominic; Povarov, Kirill; Bewley, Robert; Gvasaliya, Severian; Zheludev, Andrey | Finite-temperature dynamics and the role of disorder in nearly-critical Ni(Cl1-xBrx)24SC(NH2)2 | Session 64: Phase Transition and Spin Glass |
| 780 | Thermal Response Functions of Insulating Magnets Near and Beyond Critical Temperature | Carnahan, Caitlin; Zhang, Yinhan; Xiao, Di | Applying linear response theory, we predict the thermal conductivities of both spin and energy, which provide insight into how thermally-induced fluctuations impact transport in magnetic systems and deepen the understanding of the general effect of fluctuations on non-trivial magnetic topology. | Session 64: Phase Transition and Spin Glass |
| 781 | Magnetic transition driven by chemical substitution in Cs1−xRbxFeCl3 | Stoppel, Lena; Hayashida, Shohei; Yan, Zewu; Gvasaliya, Severian; Podlesnyak, Andrey; Zheludev, Andrey | The x = 0 compound in this series of triangular-lattice antiferromagnets has a spin-singlet ground state due to strong easy-plane magnetic anisotropy. | Session 64: Phase Transition and Spin Glass |
| 782 | Variational wave functions for spin-phonon models | Ferrari, Francesco; Becca, Federico; Valenti, Roser | In this talk we present a variational framework for the study of spin-phonon models in which lattice distortions affect the exchange interaction between the spins. | Session 64: Phase Transition and Spin Glass |
| 783 | Origin of Memory in Spin Glass Dynamics | Orbach, Raymond | We argue that the length scale for chaos takes place within the spin glass correlation length ξ(t w ,T). | Session 64: Phase Transition and Spin Glass |
| 784 | Probing spin-glass dynamics with 1/f Noise | Harrison, David; Dahlberg, E. Dan; Orbach, Raymond | We provide a physical interpretation of a previously phenomenological result for this frequency dependence. | Session 64: Phase Transition and Spin Glass |
| 785 | Field-induced quantum critical point in itinerant antiferromagnet Ti3Cu4 | Moya, Jaime; Hallas, Alannah; Huang, Chien-Lung; Loganathan, Vaideesh; Kish, Lazar; Aczel, Adam; Beare, James; Cai, Yipeng; Luke, Graeme; Weickert, Franziska; Nevidomskyy, Andriy; Malliakas, Christos; Kanatzidis, Mercouri; Morosan, Emilia; Bayliff, Kyle | We present results on singles crystals of a new antiferromagnet with no magnetic constituent elements, Ti 3Cu 4. | Session 64: Phase Transition and Spin Glass |
| 786 | Measuring hybridized electro-nuclear modes at a quantum phase transition | Libersky, Matthew; McKenzie, Ryan; Silevitch, Daniel; Stamp, Philip; Rosenbaum, Thomas | Here, we directly measure the low energy excitation modes of a well-known realization of the quantum Ising model in transverse field, LiHoF 4, using microwave spectroscopy techniques to probe energies below what is accessible via neutron scattering. | Session 64: Phase Transition and Spin Glass |
| 787 | Phases of quantum dimer magnets with strong spin-orbit coupling | Flynn, Michael; Baker, Thomas; Singh, Rajiv | We present a model which reproduces the essential elements of this experimental data, and shed light on the nature of the universal physics associated with the unexpected phase transition. | Session 64: Phase Transition and Spin Glass |
| 788 | Experimental investigation into doped Fe2P compounds for magnetocaloric refrigeration | Gibson, Ethan; Frandsen, Benjamin | We compare and contrast the observed behavior in the pure and doped compounds and offer insights into how this information can guide future applications of these materials. | Session 64: Phase Transition and Spin Glass |
| 789 | Critical properties of randomly mixed magnetic model of Ising, six-state clock, and XY spins on the square lattice | Surungan, Tasrief; Mina, Aron; Nussinov, Zohar | In the present study, we probe a new type of randomness:- that of a fluctuating number of components and/or allowed values at different lattice sites. | Session 64: Phase Transition and Spin Glass |
| 790 | Temperature Chaos in a Spin Glass Observed using the Correlation Length as a Caliper | Zhai, Qiang; Orbach, Raymond; Schlagel, Deborah | We have developed a protocol to observe temperature chaos in a CuMn spin glass. | Session 64: Phase Transition and Spin Glass |
| 791 | Control of direct exchange and superexchange interactions with DC electric fields | Furuya, Shunsuke; Takasan, Kazuaki; Sato, Masahiro | In this presentation, as a natural and important extension of our previous work, we discuss DC-electric-field controls of superexchange interactions of geometrically frustrated quantum spin systems that will allow for tuning the microscopic Hamiltonian without changing the composition of the compound. | Session 64: Phase Transition and Spin Glass |
| 792 | Finite-size Scaling of O(n) Systems at the Upper Critical Dimensionality | Lv, Jian-Ping; Xu, Wanwan; Sun, Yanan; Chen, Kun; Deng, Youjin | We address the logarithmic finite-size scaling (FSS) of the O(n) symmetry at the upper critical dimensionality. | Session 64: Phase Transition and Spin Glass |
| 793 | Competing magnetic orders and multipolar Weyl fermions in 227 pyrochlore iridates. | Ladovrechis, Konstantinos; Roy, Bitan; Meng, Tobias | In this work, we focus on an effective low-energy Luttinger model accounting for a quadratic band touching (QBT) around the Γ point, and study interaction-induced instabilities of the QBT. | Session 65: Pyrochlore Systems |
| 794 | Cluster Frustration in the Breathing Pyrochlore Magnet LiGaCr4S8 | Paddison, Joseph; Pokharel, Ganesh; Suriya Arachchige, Hasitha; Williams, Travis; May, Andrew; Fishman, Randy; Sala, Gabriele; Calder, Stuart; Ehlers, Georg; Parker, David; Hong, Tao; Wildes, Andrew; Mandrus, David; Christianson, Andrew | We present a comprehensive neutron scattering study of the breathing pyrochlore magnet LiGaCr 4S 8 [1]. | Session 65: Pyrochlore Systems |
| 795 | Beyond Single Tetrahedron Model of the Breathing Pyrochlore Material Ba3Yb2Zn5O11 | Dissanayake, Sachith; Shi, Zhenzhong; Rau, Jeffrey; Steinhardt, William; Bag, Rabindranath; Butch, Nicholas; Frontzek, Matthias; Podlesnyak, Andrey; Graf, David; Choi, Eun Sang; Lang, Franz; Blundell, Stephen; Gingras, Michel J; Haravifard, Sara | In this talk we will present single-crystal field-dependent neutron scattering measurements as well as heat capacity, ultra-sensitive magnetic susceptibility, thermal conductivity, and µSR measurements on Yb-based breathing pyrochlore system, Ba 3Yb 2Zn 5O 11. | Session 65: Pyrochlore Systems |
| 796 | Neutron Scattering Studies of Tm-Based Breathing Pyrochlore System | Yadav, Lalit; Bag, Rabindranath; Dissanayake, Sachith; Shi, Zhenzhong; Xu, Guangyong; Brown, Craig; Butch, Nicholas; Kolesnikov, Alexander; Lang, Franz; Blundell, Stephen; Haravifard, Sara | In this talk, we are going to present our latest experimental results for the Tm-based breathing pyrochlore compound Ba3Tm2Zn5O11. | Session 65: Pyrochlore Systems |
| 797 | Experimental signatures of a three-dimensional quantum spin liquid in effective spin-1/2 Ce2Zr2O7 pyrochlore | Gao, Bin; Chen, Tong; Tam, David; Huang, Chien-Lung; Sasmal, Kalyan; Adroja, Devashibhai; Ye, Feng; Cao, Huibo; Sala, Gabriele; Stone, Matthew; Baines, Chris; Verezhak, Joel; Hu, Haoyu; CHUNG, JAEHO; Xu, Xianghan; Cheong, Sang-Wook; Nallaiyan, Manivannan; Spagna, Stefano; Maple, M Brian; Nevidomskyy, Andriy; Morosan, Emilia; Chen, Gang; Dai, Pengcheng | Until 2019, the first single-crystal study of Ce 2Zr 2O 7, a compound isostructural to Ce 2Sn 2O7, reveals the absence of magnetic ordering/spin-glass down to 20 mK and the presence of a spin excitation continuum at 35 mK. | Session 65: Pyrochlore Systems |
| 798 | Effective Hamiltonian and dynamics of the dipole-octupole pyrochlore Ce2Zr2O7 | Bhardwaj, Anish; Zhang, Shu; Moessner, Roderich; Nevidomskyy, Andriy; Changlani, Hitesh | We assess the importance of quantum mechanical effects and explore the possibility of the existence of spin ice physics in this material. | Session 65: Pyrochlore Systems |
| 799 | Low Energy Magneto-optics of Tb2Ti2O7 in [111] Magnetic Field | Zhang, Xinshu; Luo, Yi; Halloran, Thomas; Gaudet, Jonathan; Man, Huiyuan; Koohpayeh, Seyed; Armitage, Peter | We perform time-domain THz spectroscopy on high quality Tb 2Ti 2O 7 crystal and study the low energy excitations as a function of [111] magnetic field with high energy resolution. | Session 65: Pyrochlore Systems |
| 800 | Specific heat measurements and Monte Carlo simulations of the canted ferromagnetic pyrochlore oxide Yb2Ti2O7 | Hu, Xinzhe; Padgett, Andrew; Yin, Liang; Yadav, Swapnil; Li, Qiuju; Sun, Xuefeng; Takano, Yasumasa | Specific heat measurements and Monte Carlo simulations of the canted ferromagnetic pyrochlore oxide Yb2Ti2O7 | Session 65: Pyrochlore Systems |
| 801 | Negative Thermal Expansion in a Magnetically Frustrated Spinel | Samanta, Ananya; Yan, Han; Penc, Karlo; Shannon, Nicholas | Here we use classical Monte Carlo simulations to directly calculate the NTE. | Session 65: Pyrochlore Systems |
| 802 | Magnetometry and transport studies of single-crystal pyrochlore iridates | Pearce, Matthew; Goetze, Kathrin; Szabo, Attila; Sikkenk, Tycho; Lees, Martin; Boothroyd, Andrew; Prabhakaran, Dharmalingam; Castelnovo, Claudio; Goddard, Paul | We present a systematic study of the evolution of these properties with magnetic field, temperature and angle. | Session 65: Pyrochlore Systems |
| 803 | Quantum Monte Carlo Simulation of an SO(N) Singlet Projector Model on the Pyrochlore Lattice | Sutton, Jared; Block, Matthew | Having studied all two-dimensional lattices of interest, our goal was to expand our computational method’s functionality to be able to handle a three-dimensional lattice, namely the Pyrochlore lattice (Fd3m). | Session 65: Pyrochlore Systems |
| 804 | Pyrochlore U(1) spin liquid of mixed-symmetry enrichments in magnetic fields | Yao, Xu-Ping; Li, Yaodong; Chen, Gang | We consider the possibility of the π-flux U(1) QSL favored by frustrated transverse exchange interactions rather than the usual quantum spin ice. | Session 65: Pyrochlore Systems |
| 805 | Machine assisted identification of unconventional order and ground-state selection in a breathing pyrochlore magnet | Sadoune, Nicolas; Liu, Ke; Jaubert, Ludovic; Yan, Han; Pollet, Lode; Shannon, Nicholas | In this work, we apply the tensorial-kernel support-vector-machine (TK-SVM) method to a classical anti-ferromagnet with Dzyaloshinskii–Moriya interaction on the breathing pyrochlore lattice, where we uncover the nature of the q = W phase below a rank-2 U(1) spin liquid found in PRL 124, 127203 (2020). | Session 65: Pyrochlore Systems |
| 806 | Probing ultrahigh magneto-optical properties and time-resolved spin dynamics in InAsP ternary alloys | Thapa, Sunil; Stanton, Christopher; Magill, Brenden; Herath Mudiyanselage, Rathsara; Khodaparast, Giti; Matsuda, Yasuhiro; Yang, Zhuo; Kohama, Yoshimitsu; Choi, Sukgeun; Palmstrom, Chris | We present a room temperature cyclotron resonance (CR) study of n-type InAs xP 1−x (x=0.07,0.34) films in ultrahigh magnetic fields in the Faraday’s geometry. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 807 | Ultrafast Spin-Lasers | Jung, Natalie; Lindemann, Markus; Pusch, Tobias; Michalzik, Rainer; Hofmann, Martin; Gerhardt, Nils | Here, we review recent results on ultrafast spin-lasers for the next generation of optical communication systems. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 808 | Birefringent Spin-Lasers | Cao, David; Xu, Gaofeng; Labinac, Velimir; Zutic, Igor | By using transparent rate equations, we explain how the birefringence can provide key differences in the modulation frequency of the intensity and polarization of light emitted from a laser[4]. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 809 | Spin lasers as coupled harmonic oscillators | Labinac, Velimir; Xu, Gaofeng; Cao, David; Zutic, Igor | By linearizing these equations and using a small signal analysis we find that the modulation of the intensity or polarization of the emitted light can be effectively represented by the two weakly-coupled harmonic oscillators of different resonant frequencies. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 810 | Rate-equations description of spin lasers | Patel, Krish; Xu, Gaofeng; Zutic, Igor | We apply a nonlinear gain model based on accurate electronic structure calculations to develop a more general description of spin lasers and reveal the effects of such a nonlinear gain model on the dynamics of spin lasers. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 811 | Electronic transport in quantum InSb nanowire spin-valve devices | Yang, Zedong; Heischmidt, Brett; Gazibegovic, Sasa; Badawy, Ghada; Car, Diana; Crowell, Paul; Bakkers, Erik; Pribiag, Vlad | We find that the transport is phase-coherent and, for contact spacings of a few hundred nanometers, also quasi-ballistic 1. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 812 | Electric field control of photoluminescence polarization in Ge/SiGe quantum wells | Rossi, Simone; Talamas Simola, Enrico; Isella, Giovanni; Pezzoli, Fabio | In this work we present a polarization-resolved photoluminescence study in a cylindrical p-i-n diode where the intrinsic region of the device consists of Ge QWs in Si 0.15Ge 0.85 barriers. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 813 | Magneto-optical investigation of spin and carrier kinetics in Ge1-xSnx/Ge heterostructures | Vitiello, Elisa; Rossi, Simone; Broderick, Christopher; Gravina, Giorgio; Balocchi, Andrea; Marie, Xavier; O’Reilly, Eoin; Myronov, Maksym; Pezzoli, Fabio | We specifically apply optical spin orientation combined with a magneto-optical analysis of the radiative emission to demonstrate coherent spin dynamics through quantum beat spectroscopy 2 and sub-ns carrier kinetics through the Hanle effect 3. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 814 | Optical injection of spin current in direct bandgap group IV semiconductors | Fettu, Gabriel; Sipe, John; Moutanabbir, Oussama | Here we exploit recent progress in group IV bandgap engineering to investigate the optical processes of spin current injection in a silicon-compatible platform. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 815 | Magneto-Optical and Magneto-Transport Studies of Near Surface InAs Quantum Wells | Magill, Brenden; Khodaparast, Giti; Thapa, Sunil; Stanton, Christopher; Yuan, Joseph; Hatefipour, Mehdi; Mayer, William; Dartiailh, Matthieu; Sardashti, Kasra; Wickramasinghe, Kaushini; Shabani, Javad; Matsuda, Yasuhiro; Yang, Zhuo; Kohama, Yoshimitsu | In this talk, we present a combined magneto-optical, magneto-transport, and theoretical approach to study the band structure of these QWs. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 816 | Dynamic Nuclear Polarization and Nuclear-Induced Frequency Focusing in Gallium Arsenide under periodic optical electron spin pumping | Dominguez, Michael; Iafrate, Joseph; Sih, Vanessa | The observation of nuclear-induced frequency focusing and its dependence on pump wavelength is corroborated by numerical calculations using a model incorporating optical orientation and the optical Stark effect (Phys. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 817 | Observation of carrier concentration dependent spintronic terahertz emission from n-GaN/NiFe heterostructures | Vetter, Eric; Biliroglu, Melike; Seyitliyev, Dovletgeldi; Reddy, Pramod; Kirste, Ronny; Sitar, Zlatko; Collazo, Ramon; Gundogdu, Kenan; Sun, Dali | We found that the amplitude of THz emission strongly depends on the carrier concentration of the semiconductor layer, which could be attributed to the tunable Rashba state occurring at the n-GaN/ferromagnet interface. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 818 | SiGe Spintronic Devices with High-k Dielectric Gates | DeMell, Jennifer; Stephen, Gregory; Gaspe, Chomani; Richardson, Christopher; Friedman, Adam | We present magnetotransport results for both the charge- and spin-based devices from 3 K – 300 K at fields up to 2.5 T and compare these results for multiple samples. | Session 66: Semiconductor Spintronics: Optics and Devices |
| 819 | Lanthanide Organometallic Compounds as Single-Molecule Magnets | Layfield, Richard | In this presentation, we will explore the relationship betweeen the dynamic magnetic properties of dysprosium sandwich compounds and their chemical environment. | Session 67: Single-Molecule Magnets and Qubits |
| 820 | Vibronic coupling in candidate spin qubit material: Na9[Ho(W5O18)2]x35H2O | Blockmon, Avery; Ullah, Aman; Hughey, Kendall; Duan, Yan; ONeal, Ken; Ozerov, Mykhaylo; Arago, Juan; Gaita-Arino, Alejandro; Musfeldt, Janice | We compared our findings with complementary lattice dynamics calculations and models for spin-phonon and vibronic coupling. | Session 67: Single-Molecule Magnets and Qubits |
| 821 | Investigating the Magnetic Properties of the Giant Mn84 Torus | Chen, Dian-Teng; Schurkus, Henry; O’Rourke, Matthew; Hale, Ashlyn; Christou, George; Chan, Garnet; Cheng, Hai-Ping | In this work, we investigate these interactions using first-principles calculations, from which a Heisenberg model is developed. | Session 67: Single-Molecule Magnets and Qubits |
| 822 | Symmetries, pseudo-symmetries and single-molecule magnets | Mansikkamäki, Akseli | [1] In the present work we will show by quantitative evaluation of the crystal-field using ab initio methods that the symmetry of the crystal-field operator does not match that of an ideal pentagonal bipyramidal environment. | Session 67: Single-Molecule Magnets and Qubits |
| 823 | Magnetic Properties of Single-Molecule Magnets Derived from Equation-of-Motion Coupled-Cluster Wave Functions | Alessio, Maristella; Krylov, Anna | This work presents validation studies for magnetic properties of transition metal complexes that are proposed as single-molecule magnets (SMMs). | Session 67: Single-Molecule Magnets and Qubits |
| 824 | Relativistic Hyperfine Interaction in Single-Molecule Magnets: Multiconfigurational Study | Wysocki, Aleksander; Park, Kyungwha | Here, we describe an implementation of a first-principles computational methodology for magnetic hyperfine and electric quadrupole interactions within the framework of multiconfigurational quantum chemistry methods. | Session 67: Single-Molecule Magnets and Qubits |
| 825 | Impact of Heisenberg Coupling Strength of Ferromagnetic Electrodes on Temporal and Spatial Properties of Magnetic Tunnel Junction based Molecular Spintronics Devices (MTJMSD) | Mutunga, Eva; Dahal, Bishnu; Savadkoohi, Marzieh; Grizzle, Andrew; D’Angelo, Christopher; Lamberti, Vincent; Tyagi, Pawan | We used Monte Carlo (MC) simulations based on the Ising model analog of MTJMSD to investigate the effect of ferromagnetic electrodes on magnetic and physical properties of the device. | Session 67: Single-Molecule Magnets and Qubits |
| 826 | Towards the extraction and control of the Hamiltonian parameters of spin-3/2 Co(II) antiferromagnets. | Blackmore, William; Brambleby, Jamie; Singleton, John; Lees, Martin; Manson, Jamie; Goddard, Paul | We will present a methodology to characterise S = 3/2 Co 2+ antiferromagnets that make use of lab-based magnetometry and heat capacity techniques. | Session 67: Single-Molecule Magnets and Qubits |
| 827 | Single-Molecule Magnet Mn12 on GaAs-supported Graphene: Gate Field Effects From First Principles | Liu, Shuanglong; Yazback, Maher; Fry, James; Zhang, Xiaoguang; Cheng, Hai-Ping | We study gate field effects on the Mn 12O 12(COOH) 16(H 2O) 4 | graphene | GaAs heterostructure via first-principles calculations. | Session 67: Single-Molecule Magnets and Qubits |
| 828 | Evolution of exchange interactions in XXYY spin tetramers | Dyszel, Peter; Haraldsen, Jason | Using exact diagonalization, we examine the evolution of the quantum energy levels and thermodynamic properties for various spin configurations and exchange interactions. | Session 67: Single-Molecule Magnets and Qubits |
| 829 | Electrically Tuned Hyperfine Coupling in Neutral Tb(II)-based Single-Molecule Magnet | Smith, Robert; Wysocki, Aleksander; Park, Kyungwha | Inspired by the solid-state systems, we propose that divalent lanthanide (Ln) complexes with unusual electronic configurations have a strong interaction between the Ln nuclear spin and the electronic degrees of freedom, which renders electrical tuning of the interaction. | Session 67: Single-Molecule Magnets and Qubits |
| 830 | Manipulating Chiral Spin Textures in Compensated Ferrimagnets | Caretta, Lucas; Kim, Se Kwon; Ross, Caroline; Lee, Kyung-Jin; Beach, Geoffrey | A promising approach to encode bits of information for next-generation memory and logic is by using solitons, such as domain walls (DW) or topological skyrmions, which can be translated by currents across racetrack-like wire devices. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 831 | Current-induced spin-orbit torque switching of chiral magnetization across a synthetic antiferromagnet with built-in planar asymmetry | Wang, Kang; Qian, Lijuan; Ying, Seechen; Xiao, Gang | In this talk, we discuss about the nature and control of chiral magnetization across a synthetic antiferromagnet (SAF) where an interlayer DMI is present between magnetic layers separated by a heavy-metal spacer. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 832 | Spin waves in an antiferromanget with a local triangular symmetry | Dasgupta, Sayak; Tchernyshyov, Oleg | We apply this approach to the compounds of the Mn 3X family with stacked kagome layers and extract the exchange coefficients for a model spin Hamiltonian by fitting to neutron scattering data [2]. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 833 | Interfacial Dzyaloshinskii-Moriya Interaction of Collinear Antiferromagnets MnPt and NiO on W, Re, and Au | Akanda, Md. Rakibul Karim; Park, In Jun; Lake, Roger | Interfacial Dzyaloshinskii-Moriya Interaction of Collinear Antiferromagnets MnPt and NiO on W, Re, and Au | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 834 | Magnon-phonon hybridization in the quasi-2D antiferromagnet MnPSe3 | Mai, Thuc; Garrity, Kevin; McCreary, Amber; Nguyen, Nhan; Argo, Josh; Simpson, Jeffrey; Doan-Nguyen, Vicky; Valdes Aguilar, Rolando; Hight Walker, Angela | We construct a model that reproduces our observations and demonstrates that the phonons and two-magnon excitations are hybridized in the magnetically ordered state. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 835 | Coupled Skyrmion Breathing Modes in Synthetic Ferri- and Antiferromagnets | Lonsky, Martin; Hoffmann, Axel | Here, we present micromagnetic simulations of these resonance modes in synthetic ferri- and antiferromagnets. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 836 | Role of interlayer interactions in the recovery of synthetic ferrimagnetic skyrmions in [Co/Gd/Pt]n multilayers after cycling through the spin reorientation transition | Stuart, Alexandra; Wang, Xiao; Fiagbenu, Adzo; Buchanan, Kristen; Cheng, Xuemei | Here we use micromagnetic simulations to gain insight into a spin memory effect that was recently demonstrated experimentally for synthetic AFM skyrmion pairs in [Co/Gd/Pt] n=10 multilayered thin films. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 837 | Effects of geometry on curvilinear antiferromagnetic spin chains | Pylypovskyi, Oleksandr; Kononenko, Denys; Yershov, Kostiantyn; Roessler, Ulrich; Fassbender, Juergen; Van den Brink, Jeroen; Makarov, Dennis; Sheka, Denis | Here, we explore geometry-induced effects in curvilinear antiferromagnets. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 838 | Antiferromagnetic Skyrmions and Skyrmion Density Wave in Rashba Hund’s Insulator. | Mukherjee, Arnob; Kathyat, Deepak; Kumar, Sanjeev | The results are based on unbiased simulations of a classical super-exchange model derived, in this work, from a realistic microscopic electronic Hamiltonian. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 839 | Controlling long-range skyrmion lattices using field and temperature in Fe/Gd multilayers | DeBeer-Schmitt, Lisa; Desautels, Ryan; Tang, Nan; Montoya, Sergio; Liyanage, W.L.N.C; Patel, Sheena; Fitzsimmons, Michael; Fullerton, Eric; Borchers, Julie; Gilbert, Dustin | Using small angle neutron scattering (SANS), we demonstrate a skyrmion lattice exists over a broad field and temperature range (including positive/negative/zero magnetic field and temperatures between 10K and 325 K, in a single film). | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 840 | Spin texture dynamics in amorphous Fe-Ge films | Chen, Xiaoqian; Streubel, Robert; Bouma, Dinah Simone; Koch, Roland; Morley, Sophie; Kevan, Stephen; Hellman, Frances; Fischer, Peter; Roy, Sujoy | We used resonant coherent x-ray scattering and studied magnetic order parameters and spin texture dynamics across two magnetic phase transitions in a-FeGe. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 841 | Stabilization of zero-field skyrmions in synthetic antiferromagnetic multilayers | Sim, May Inn; Thian, Dickson; Chen, Xiaoye; Ho, Pin; Tan, Hang Khume; Li, Chao; Maddu, Ramu; Sarjoosing, Goolaup; Lim Chee Beng, Nelson; Lee Koon Yap, Sherry; Soumyanarayanan, Anjan | This work demonstrates the field-free stabilization of synthetic AF (SAF) Sks at RT mediated by a Ir heavy metal spacer between ferromagnetic (FM) Ir/Fe/Co/Pt MLs. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 842 | Reversible Skyrmion Logic System | Hu, Xuan; Chauwin, Maverick; Garcia-Sanchez, Felipe; Betrabet, Neilesh; Paler, Alexandru; Moutafis, Christoforos; Friedman, Joseph | Here we propose a reversible skyrmion logic system with which we demonstrate a direct cascading mechanism, enabling a large-scale reversible skyrmion computing system [1]. | Session 68: Skyrmions in Ferrimagnets and Antiferromagnets |
| 843 | Non-collinear magnetism and zero-field skyrmions in all-light-metal multilayers | Lo Conte, Roberto; Nandy, Ashis; Chen, Gong; Cauduro, Andre; Maity, Ajanta; Ophus, Colin; Chen, Zhijie; N’Diaye, Alpha; Yang, Hongxin; Liu, Kai; Schmid, Andreas; Wiesendanger, Roland | Subsequently, I will discuss how such systems can be employed for the stabilization of isolated magnetic skyrmions at room temperature and zero magnetic field via interlayer exchange coupling (IEC) [4,5]. | Session 69: Skyrmions in Two Dimensional Systems |
| 844 | Isolated zero-field magnetic skyrmions in heterogeneous multilayer films stabilized by interlayer exchange coupling | Chen, Xiaoye; Tai, Tommy; Tan, Hui Ru; Tan, Hang Khume; Cheng, Xuan Min; Ho, Pin; Soumyanarayanan, Anjan | In this work, we design heterogeneous multilayers with two adjoining functional stacks with tunable interlayer exchange coupling (IEC) 4,5. | Session 69: Skyrmions in Two Dimensional Systems |
| 845 | Properties of skyrmions in Co/Pt-based multilayers from theory | Jia, Hongying; Hoffmann, Markus; Bihlmayer, Gustav; Bluegel, Stefan | We investigate the prospects for stable, compact 10 nm sized skyrmions in ferromagneically and antiferromagneticially coupled Co/Pt-based multilayers from first-principles calculation of the spin-stiffness, the Dzyaloshinskii-Moriya interaction (DMI), magnetic anisotropy and the interlayer coupling. | Session 69: Skyrmions in Two Dimensional Systems |
| 846 | Tunable Dzyaloshinskii-Moriya Interaction in Ferrimagnetic GdCo alloy through Interface Engineering | Morshed, Md Golam; Khoo, Khoong Hong; Quessab, Yassine; XU, Jun-Wen; Laskowski, Robert; Balachandran, Prasanna; Kent, Andrew; Ghosh, Avik | We present a systematic analysis of the DMI variation in ferrimagnetic Pt/GdCo/Pt 1-xW x multilayer as a function of Tungsten (W) composition (x) using Density Functional Theory (DFT). | Session 69: Skyrmions in Two Dimensional Systems |
| 847 | Topological magnetic states of Fe3GeTe2 from first-principles-based effective Hamitonian | Xu, Changsong; Li, Xueyang; Chen, Peng; Zhang, Yun; Xiang, Hongjun; Bellaiche, Laurent; Hu, Jin; Churchill, Hugh; Li, Yue; Phatak, Charudatta | Here we perform theoretical studies and report our newly developed first-principles-based effective Hamiltonian, which not only reproduces the complex topological states in Fe 3GeTe 2, but also sheds light on the elusive topics. | Session 69: Skyrmions in Two Dimensional Systems |
| 848 | Meron-Like Topological Spin Defects in Monolayer CrCl3 | Lu, Xiaobo; Fei, Ruixiang; Zhu, Linghan; Yang, Li | Employing first-principles and Monte Carlo simulations, we propose that monolayer CrCl 3, can be a promising candidate for observing the vortex/antivortex types of topological defects, so-called merons. | Session 69: Skyrmions in Two Dimensional Systems |
| 849 | Skyrmions in twisted van der Waals magnets | Akram, Muhammad; Erten, Onur | We find a large region of skyrmion crystal phase when the length scales of the moire periodicity and skyrmions are compatible. | Session 69: Skyrmions in Two Dimensional Systems |
| 850 | In Pursuit of Antiskyrmions and the Anisotropic Dzyaloshinskii-Moriya Interaction: Structural and Magnetic Characterization of Uniaxial Pt/Co-based C2v Thin Films | Kitcher, Michael D; Mewes, Claudia; Mewes, Tim; De Graef, Marc; Sokalski, Vincent | This work presents C2 v Ag/Pt/Co-based films as potential antiskyrmion hosts. | Session 69: Skyrmions in Two Dimensional Systems |
| 851 | Ferroelectric control of magnetic skyrmions in two-dimensional van der Waals heterostructures | Huang, Kai; Shao, Ding-Fu; Tsymbal, Evgeny | Here, we predict that the DMI and the related skyrmion behaviors in a Fe 3GeTe 2 monolayer can be controlled by ferroelectric polarization of an adjacent ferroelectric 2D van der Waals In 2Se 3 monolayer. | Session 69: Skyrmions in Two Dimensional Systems |
| 852 | Emergence of Magnetic Skyrmions in Ferromagnetic Transition Metal Chalcogenides | Ou, Yunbo; Chi, Hang; Nemes, Norbert; Martinez, Jose; Rocci, Mirko; Akey, Austin; Ge, Wenbo; Suri, Dhavala; Wang, Yiping; Burch, Kenneth; Bell, David; Wu, Weida; Moodera, Jagadeesh | Here we report the realization of quasi-2D TMC Cr 2Te 3 down to 1 ML on SrTiO 3 (111) by molecular beam epitaxy (MBE). | Session 69: Skyrmions in Two Dimensional Systems |
| 853 | Spin filtering and spin separation in 2D materials by topological spin Hall effect | Zadorozhnyi, Andrei; Dahnovsky, Yuri | We propose to study new physical effects based on electron scattering on magnetic skyrmions and vortexes distributed in a 2D ferromagnetic material. | Session 69: Skyrmions in Two Dimensional Systems |
| 854 | Temperature evolution of skyrmion stability and formation mechanism in chiral multilayers | Chue, Edwin; Chen, Xiaoye; Tan, Hui Ru; Lin, Ming; Kong, Jian Feng; Tan, Hang Khume; Soumyanarayanan, Anjan | In this work, we investigate Ir/Fe/Co/Pt multilayers [2] over temperatures of 100 – 350K using first order reversal curve (FORC) magnetometry [3] and Lorentz transmission electron microscopy (LTEM). | Session 69: Skyrmions in Two Dimensional Systems |
| 855 | Propagating spinons and magnons in coupled quantum spin chains | Ke, Xianglin | In this talk, I will present our recent neutron scattering and theoretical studies of a unique quasi-1D quantum spin system, Cu 2(OH) 3Br, which consists of weakly-coupled, ferromagnetic and antiferromagnetic alternating chains [1]. | Session 70: Spin Chains and Multimetallic Systems |
| 856 | Excitations of critical quantum spin chains from non-equilibrium classical dynamics | Vinet, St��phane; Longpré, Gabriel; Witczak-Krempa, William | We give the exact groundstates, and single magnon excitations. | Session 70: Spin Chains and Multimetallic Systems |
| 857 | Evolution of the quantum phase transitions in XXY general spin trimers with applied magnetic field and variable exchange parameters | Brumfield, Amelia; Haraldsen, Jason | This study investigates the thermodynamics and magnetic excitations of XXY general spin isosceles quantum trimers with a variable magnetic field and exchange parameters. | Session 70: Spin Chains and Multimetallic Systems |
| 858 | Weakly-coupled alternating S=1/2 chains in the distorted honeycomb-lattice compound Na2Cu2TeO6 | Gao, Shang; Lin, Ling-Fang; May, Andrew; Rai, Binod; Zhang, Qiang; Dagotto, Elbio; Christianson, Andrew; Stone, Matthew | Here we employ neutron scattering to study the spin dynamics in Na 2Cu 2TeO 6 and accurately determine the coupling strengths through the random phase approximation and density functional theory (DFT) approaches. | Session 70: Spin Chains and Multimetallic Systems |
| 859 | Magnetization plateau of the S=2 antiferromagnetic Heisenberg chain with anisotropies | Sakai, Toru; Okamoto, Kiyomi; Tonegawa, Takashi | Magnetization plateau of the S=2 antiferromagnetic Heisenberg chain with anisotropies | Session 70: Spin Chains and Multimetallic Systems |
| 860 | Comparison of spin dynamics in green and black dioptase: from classical chains to quantum fluctuations | Podlesnyak, Andrey; Nikitin, Stanislav; Prokhnenko, Oleksandr; Kolesnikov, Alexander; Prisk, Timothy; Anovitz, Larry | We found that dehydration has a dual effect on the magnetic interactions: it significantly increases the intrachain exchange interaction Jc, and simultaneously decouples the chains by suppressing Jab. | Session 70: Spin Chains and Multimetallic Systems |
| 861 | Single-ion properties of quasi-1D transverse Ising-critical CoNb2O6 | Ringler, John; Kolesnikov, Alexander; Ross, Kate | We present the results of both inelastic neutron scattering measurements and electron paramagnetic resonance spectroscopy on CoNb 2O 6, which explores the single-ion anisotropy present in the local environments of the Co 2+ ions in an effort to shed light on these recent developments. | Session 70: Spin Chains and Multimetallic Systems |
| 862 | Giant pressure-enhancement of multiferroicity in CuBr2 from first principles | Razpopov, Aleksandar; Borisov, Vladislav; Normand, Bruce; Valenti, Roser | We provide a quantitative explanation by two-step density-functional-theory calculations that include correlations by GGA+U. | Session 70: Spin Chains and Multimetallic Systems |
| 863 | Rashba + exchange” effects in 1D magnets: bismuth nanoribbons as model systems | Naumov, Ivan; Dev, Pratibha | Rashba + exchange” effects in 1D magnets: bismuth nanoribbons as model systems | Session 70: Spin Chains and Multimetallic Systems |
| 864 | Competing Magnetic Ground States of Novel Sawtooth Co2+ S = 3/2 Chains in NaCo2(SeO3)2(OH) | Sanjeewa, Duminda; Xing, Jie; Garlea, Vasile; Taddei, Keith | Recently we have synthesized single crystals of NaCo 2(SeO 3) 2(OH) and characterized the crystals structure. | Session 70: Spin Chains and Multimetallic Systems |
| 865 | Level statistics of a critical quantum spin chain from non-equilibrium classical dynamics | Longpré, Gabriel; Vinet, St��phane; Witczak-Krempa, William | Level statistics of a critical quantum spin chain from non-equilibrium classical dynamics | Session 70: Spin Chains and Multimetallic Systems |
| 866 | Helical spin structure of 1D chains with hybridized boundaries | Vargas, Nicolas; Baker, Alexander; Torres, Felipe; Pico, Roman; Lee, Jonathan R.I.; Hamad, Ignacio; Abufager, Paula; Kiwi, Miguel; Willey, Trevor; Monton, Carlos; Schuller, Ivan | We have synthesized and studied quantitatively the structure and magnetic properties of ultra-short 1D Fe chains subject to various boundary conditions. | Session 70: Spin Chains and Multimetallic Systems |
| 867 | Engineering magnetic edge states in zigzag graphene nanoribbons | Blackwell, Raymond; Zhao, Fangzhou; Brooks, Erin; Piskun, Ilya; Wang, Shenkai; Zhu, Junmian; Lee, Yea-Lee; Louie, Steven; Fischer, Felix | We describe the bottom-up synthesis of ZGNRs featuring a superlattice of heteroatom dopants along the zigzag edge. | Session 70: Spin Chains and Multimetallic Systems |
| 868 | AMPLITUDE REPRESENTATION OF THE LANDAU-LIFSHITZ EQUATION | Li, Gang; Sun, Chen; Pokrovsky, Valery | We use a classical representation for the Landau-Lifshitz equation, the energy spectrum of magnons is studied. | Session 71: Spin Dynamics and Excitations |
| 869 | Equations of motions for spin-1 magnets — a u(3) formalism, suitable to investigate dynamical and thermodynamical properties | Remund, Kimberly; Pohle, Rico; Akagi, Yutaka; Romhanyi, Judit; Shannon, Nicholas | [Andreev84, Barzykin91] In this talk, we extend the commonly used su(3) algebra for spin-1 moments to the u(3) Algebra [Papanicolaou88], treating dipolar and quadrupolar degrees of freedom on an equal footing, and derive equations of motion, which take a simple form and are well suited for numerical implementation. | Session 71: Spin Dynamics and Excitations |
| 870 | Correlated Magnetic Properties in Ultra-low Damping Ferromagnetic and Heavy Metal Bilayers | Lujan, David; Lee, Aidan; Chang, Tsun Chun; Nunley, Timothy; Sobotkiewich, Kemal; Lee, Shang-Fan; Yang, Fengyuan; Li, Xiaoqin (Elaine) | Using momentum-resolved Brillouin light scattering, we investigate a series of epitaxially grown Pt (3 nm)/Co xFe 1-x bilayers that exhibit the lowest damping in metallic FMs. | Session 71: Spin Dynamics and Excitations |
| 871 | Spin Echo Simulations and Supervised Machine Learning | Snider, Charles; Carr, Stephen; Feldman, Dmitri; Ramanathan, Chandrasekhar; Marston, Brad; Mitrovic, Vesna | Using a numerical simulation of a phenomenological model of nuclear spin-spin interaction mediated by collective electronic spin excitations, we study the effects of such an interaction on nuclear magnetic resonance spin echo experiments. | Session 71: Spin Dynamics and Excitations |
| 872 | Magnetization dynamics of room-temperature vdWs magnet Fe5GeTe2 | Alahmed, Laith; Nepal, Bhuwan; Macy, Juan; Wei, Kaya; Zheng, Wenkai; Sapkota, Arjun; Mazza, Alessandro; Brahlek, Matthew; Jin, Wencan; Zhang, Shulei; Mewes, Claudia; Balicas, Luis; Mewes, Tim; Li, Peng | In our work, we synthesized bulk Fe 5GeTe 2 crystals and studied the magnetic properties by temperature-dependent vibrating sample magnetometry (VSM) and ferromagnetic resonance (FMR) techniques. | Session 71: Spin Dynamics and Excitations |
| 873 | Spin-orbit exciton in a honeycomb lattice magnet CoTiO3: Revealing a link between magnetism in d- and f-electron systems | Yuan, Bo; Stone, Matthew; Shu, Guo-Jiun; Chou, Fangchang; Rao, Xin; Clancy, James; Kim, Young-June | We present inelastic neutron scattering study of the spin-orbit (SO) exciton in a single crystal sample of CoTiO 3 as a function of temperature. | Session 71: Spin Dynamics and Excitations |
| 874 | Nonlocal Gilbert damping and magnetic interactions in noncollinear magnetic nanostructures from first principles | Brinker, Sascha; dos Santos Dias, Manuel; Lounis, Samir | Utilizing a first-principles description of the spin dynamics of noncollinear magnetic nanostructures based on linear-response time-dependent density functional theory [1], we demonstrate that the Gilbert damping and gyromagnetic tensors can be expressed in terms of couplings, chiral or not, of the magnetic moments. | Session 71: Spin Dynamics and Excitations |
| 875 | Ultrafast Spin Dynamics in the Chiral Helimagnet Cr1/3NbS2 | Liu, Hengzhou; Trinh, Minh Tuan; Clements, Ellie; Li, Ling; Mandrus, David; Srikanth, Hariharan; Phan, Manh-Huong; Karaiskaj, Denis | Here, we present an ultrafast spin dynamics study in single crystals of chiral helimagnet Cr 1/3NbS 2 using the time-resolved magneto-optical Kerr effect technique. | Session 71: Spin Dynamics and Excitations |
| 876 | Spin excitations in the multiferroic skyrmion host GaV4S8 | Pokharel, Ganesh; Suriya Arachchige, Hasitha; Ehlers, Georg; Do, Seunghwan; Stone, Matthew; Lumsden, Mark; Zhang, Hao; Qiu, Yiming; Fishman, Randy; Wilson, Stephen; Mandrus, David; Christianson, Andrew | A Heisenberg spin model with competing symmetric and asymmetric exchange (DM) interactions explain the experimental data. | Session 71: Spin Dynamics and Excitations |
| 877 | Structure change across the Morin transition temperature of single crystal α-Fe2O3 | He, Jiaming; Wang, Suyin; Chen, Yu-sheng; Zhou, Jianshi | Alpha-ferric oxide (α-Fe 2O 3) has been the subject of extensive studies aiming to determine the relationship between spontaneous magnetic moments and structure. | Session 71: Spin Dynamics and Excitations |
| 878 | Micromagnetic modeling of skyrmion and domain wall dynamics in Pt/TmIG systems | Pelekhov, Denis; Freyermuth, Jacob; Selcu, Camelia; Ahmed, Adam; Bagues Salguero, Nuria; Guo, Jason; Lee, Aidan; Lyalin, Igor; McCullian, Brendan; Wang, Binbin; Wu, Po Kuan; Hammel, P Chris; Kawakami, Roland; McComb, David; Yang, Fengyuan; Randeria, Mohit | We present investigation of skyrmion and domain wall formation and dynamics in Pt/Tm 3Fe 5O 12(TmIG) bilayers. | Session 71: Spin Dynamics and Excitations |
| 879 | Unconventional dynamics of ferrimagnets in the vicinity of compensation points | Kim, Se Kwon | In this talk, we will discuss the recent theoretical progress on the ensuing novel dynamics of ferrimagnets. | Session 71: Spin Dynamics and Excitations |
| 880 | Characterization of the Dynamics of FeRh using Time-Domain Thermoreflectance (TDTR) | Harton, Renee; Mason, Nadya; Cahill, David | Using Time-Domain Thermoreflectance (TDTR), a pump probe technique used to determine the thermoreflectance (TR) of samples, we studied the dynamics of FeRh. | Session 71: Spin Dynamics and Excitations |
| 881 | Reservoir Computing with Frustrated Nanomagnet Arrays | Edwards, Alexander; Zhou, Peng; Bhattacharya, Dhritiman; McDonald, Nathan; Garcia-Sanchez, Felipe; Loomis, Lisa; Thiem, Clare; Atulasimha, Jayasimha; Friedman, Joseph | We propose a novel reservoir comprising a planar arrangement of nanomagnets each having perpendicular magnetic anisotropy (PMA) [2]. | Session 72: Spin Ice |
| 882 | Chiral switching and relaxation dynamics in artificial square ice | Leo, Naëmi; Koraltan, Sabri; Pancaldi, Matteo; Villalba González, Pedroáá; Abert, Claas; Vogler, Christoph; Hofhuis, Kevin; Slanovc, Florian; Bruckner, Florian; Heistracher, Paul; Menniti, Mattoe; Suess, Dieter; Vavassori, Paolo | In this work, we consider how the switching behaviour of a nanomagnet in archetypical artificial square ice is modified by the interaction with its six nearest neighbours, and find that barrier energies for clockwise and counter-clockwise rotation can differ significantly. | Session 72: Spin Ice |
| 883 | Emergent Strings in Santa Fe Artificial Spin Ice | Zhang, Xiaoyu; Duzgun, Ayhan; Lao, Yuyang; Bingham, Nicholas; Sklenar, Joseph; Saglam, Hilal; Chopdekar, Rajesh; Subzwari, Shayaan; Batley, Joseph; Watts, Justin; Bromley, Daniel; Leighton, Chris; O’Brien, Liam; Nisoli, Cristiano; Schiffer, Peter | Here we report a study on the Santa Fe Ice (SFI) system, which has an intrinsic population of excited vertices built into the geometry. | Session 72: Spin Ice |
| 884 | Field-Induced Magnetic Monopole Plasma in Artificial Spin Ice | Goryca, Mateusz; Zhang, Xiaoyu; Li, Jing; Balk, Andrew; Watts, Justin; Leighton, Chris; Nisoli, Cristiano; Schiffer, Peter; Crooker, Scott | Here we demonstrate that the archetypal square ASI lattice can host, in specific regions of its magnetic phase diagram, plasma-like regimes containing a high density of mobile magnetic monopoles. | Session 72: Spin Ice |
| 885 | Complex Collective Effects in Vertex Frustrated Artificial Spin Ice | Schiffer, Peter | This research has been performed with many collaborators, including: Alan Albrecht, Joseph T. Batley, Nicholas S. Bingham, Daniel Bromley, Francesco Caravelli, Isaac Carrasquillo, Gia-Wei Chern, Rajesh Chopdekar, Karin Dahmen, Ayhan Duzgun, Daniel Gardeazabal, Ian Gilbert, Yuyang Lao, Brian Le, Chris Leighton, Michael Manno, Cristiano Nisoli, Liam O’Brien, Jungsik Park, Hilal Saglam, Andreas Scholl, Mohammed Sheikh, Joseph Sklenar, Shayaan Subzwari, Justin D. Watts, and Xiaoyu Zhang. | Session 72: Spin Ice |
| 886 | A Magnon Approach to Thermal Fluctuations in Mesospins | Sloetjes, Sam; Hjörvarsson, Björgvin; Kapaklis, Vassilios | Here, we address thermal fluctuations of mesospins by means of characterizing the spectrum of thermally excited magnons, and build a framework to study these excitations based on numerical simulations. | Session 72: Spin Ice |
| 887 | Avalanches from the ground state in artificial square ice | Bingham, Nicholas; Park, Jungsik; Simon, Alejandro; Zhu, William; Watts, Justin; Zhang, Xiaoyu; Batley, Joseph; Dahmen, Karin; Leighton, Chris; Schiffer, Peter | In this work, we utilize the customizable nature of artificial spin ice to examine avalanche processes under well-controlled circumstances. | Session 72: Spin Ice |
| 888 | Field-tunable correlations in perpendicular artificial spin ice arrays | Kempinger, Susan; Huang, Yu-Sheng; Lammert, Paul; Vogel, Michael; Pearson, John; Hoffmann, Axel; Crespi, Vincent; Schiffer, Peter; Samarth, Nitin | We have overcome this limitation by fabricating perpendicular ASI systems from Pt/Co islands on a soft-magnetic Ni80Fe20 (Py) underlayer to increase interactions. | Session 72: Spin Ice |
| 889 | Magnetic Monopole Noise on Octahedral Spin Ice | Nilsson Hallén, Jonathan; Moessner, Roderich; Castelnovo, Claudio | Here we consider a frustrated spin ice-like system , which we call octahedral spin ice (OSI), consisting of antiferromagnetically interacting Ising spins forming corner sharing octahedra. | Session 72: Spin Ice |
| 890 | Proposal for Observing Magnetic Monopoles in Spin Ice via Electron Holography | Dhar, Ankur; Jaubert, Ludovic; Shintake, Tsumoru; Shannon, Nicholas | We explore the possibility of imaging monopoles via electron holography through experimental measurements of monopole and spin ice analogs, and computational simulation of how monopoles would appear in a pyrochlore spin ice thin film [4]. | Session 72: Spin Ice |
| 891 | Ground state transitions in Tetris artificial spin ice | Saglam, Hilal; Zhang, Xiaoyu; Duzgun, Ayhan; Bingham, Nicholas; Lao, Yuyang; Kargioti, Aikaterini; Sklenar, Joseph; Gilbert, Ian; Nisoli, Cristiano | We have studied the dynamics of Tetris ice, which can be decomposed into so-called staircase and backbone bands. | Session 72: Spin Ice |
| 892 | Influence of dipolar interaction on the spin-wave mode propagation in artificial spin ice | Arora, Nimisha; Das, Pintu | We have thus performed a detailed analysis of the role of dipolar interaction on the sw dynamics and propagation in square artificial spin ice (S-ASI). | Session 72: Spin Ice |
| 893 | Monopole density and antiferromagnetic domains in spin-ice iridates | Castelnovo, Claudio; Szabo, Attila; Pearce, Matthew; Goetze, Kathrin; Sikkenk, Tycho; Lees, Martin; Boothroyd, Andrew; Dharmalingam, Prabhakaran; Goddard, Paul | We investigate the behaviour of rare earth pyrochlore iridates Dy2Ir2O7 and Ho2Ir2O7 using dipolar Monte Carlo simulations for the rare earth moments and an effective representation of the Ir moments as local fields [Lefrancois et al, Nat. | Session 72: Spin Ice |
| 894 | Distinguishing dipolar and octupolar quantum spin ices | Patri, Adarsh; Hosoi, Masashi; Kim, Yong-Baek | In this talk, we theoretically propose that a magnetostriction measurement can be used as a powerful tool to access the novel properties of multipolar-based quantum spin liquids. | Session 73: Spin Ice II & Kitaev Systems |
| 895 | Hidden phases born of a quantum spin liquid: Application to pyrochlore spin ice | Yang, Hyeok-Jun; Shannon, Nicholas; Lee, SungBin | Here, we formulate the effective parton interactions to explore the hidden phases beyond the perturbative approach. | Session 73: Spin Ice II & Kitaev Systems |
| 896 | The Emergent Fine Structure Constant of Quantum Spin Ice Is Large | Pace, Salvatore; Morampudi, Siddhardh; Moessner, Roderich; Laumann, Christopher | Here, we show that the two greatly differ in their fine-structure constant α, which parametrizes how strongly matter couples to light: αQSI is more than an order of magnitude greater than αQED≈1/137. | Session 73: Spin Ice II & Kitaev Systems |
| 897 | Persistent homology as an order parameter for classical spins | Olsthoorn, Bart; Hellsvik, Johan; Balatsky, Alexander | We show that persistent homology – a relatively new field in applied mathematics – can be used as a universal framework to construct a phase diagram [1]. | Session 73: Spin Ice II & Kitaev Systems |
| 898 | U(1) and Z2 spin liquids on the pyrochlore lattice | Liu, Chunxiao; Halász, Gábor; Balents, Leon | In this work we explore the possibility of finding spin liquids whose low energy theories go beyond this standard one. | Session 73: Spin Ice II & Kitaev Systems |
| 899 | Importance of dynamic lattice effects for crystal field excitations in quantum spin ice candidate Pr2Zr2O7 | Xu, Yuanyuan; Man, Huiyuan; Tang, Nan; Baidya, Santu; Nakatsuji, Satoru; Vanderbilt, David; Drichko, Natalia | We directly observed a splitting of the excited state doublet at around 55 meV which originates from vibronic coupling of the E g doublet with a phonon. | Session 73: Spin Ice II & Kitaev Systems |
| 900 | Realization of the kagome spin ice state in frustrated intermetallic HoAgGe | Zhao, Kan | Using experimental and theoretical approaches including magnetometry, thermodynamic measurements, neutron scattering and Monte Carlo simulations, we establish HoAgGe as a crystalline (i.e. non-artificial) system that realizes the kagome spin ice state. | Session 73: Spin Ice II & Kitaev Systems |
| 901 | Observation of magnetic ordering in Kitaev material Ag3LiIr2O6 in the absence of structural disorder | Bahrami, Faranak; Kenney, Eric; Wang, Chennan; Berlie, Adam; Lebedev, Oleg; Graf, Michael; Tafti, Fazel | In this talk, we present a comparative study between clean and disordered samples of Ag 3LiIr 2O 6 to highlight the effects of structural disorder on the magnetic behavior of the material. | Session 73: Spin Ice II & Kitaev Systems |
| 902 | Symmetry Analysis of Tensors for the Honeycomb Lattice of Edge-Sharing Octahedra | Utermohlen, Franz; Trivedi, Nandini | We obtain the most general form of rank-2 and rank-3 tensors allowed by the symmetries of a honeycomb lattice of edge-sharing octahedra (such as alpha-RuCl3 and CrI3). | Session 73: Spin Ice II & Kitaev Systems |
| 903 | Visualization of Isospin Momentum Texture of Dirac Magnons and Excitons in a Honeycomb Quantum Magnet | Elliot, Miska; McClarty, Paul; Prabhakaran, Dharmalingam; Johnson, Roger; Walker, Helen; Manuel, Pascal; Coldea, Radu | Insights from this field have reached into many areas of physics and in this talk we describe certain universal signatures of band topology in propagating bosonic quasi-particles. | Session 73: Spin Ice II & Kitaev Systems |
| 904 | Understanding the magnetic interactions of the zig-zag honeycomb lattice: Application to RuCl3 | Wilson, Evan; Haraldsen, Jason | In this talk, we investigate the effects of variable exchange interactions on the spin dynamics of the zig-zag honeycomb lattice. | Session 73: Spin Ice II & Kitaev Systems |
| 905 | Ground-state phase diagram of the S=1/2 Heisenberg-Γ model on a honeycomb lattice. | Suzuki, Takafumi; Yamada, Takuto; Suga, Sei-ichiro | In this study, we focus on the effect of the anisotropic interaction; we investigate the ground state from the isolated dimer limit to the spin-chain limit by changing the coupling constants. | Session 73: Spin Ice II & Kitaev Systems |
| 906 | Ground-state phase diagram of the Kitaev-Γ model on a honeycomb lattice | Suga, Sei-ichiro; Suzuki, Takafumi; Yamada, Takuto | We investigate the ground-state phase diagram of the Kitaev-Γ model on a honeycomb lattice by utilizing series expansions and numerical exact diagonalizations [1]. | Session 73: Spin Ice II & Kitaev Systems |
| 907 | Spin-liquids on the triangular lattice in a spin model approximating the Hubbard model | Cookmeyer, Taylor; Motruk, Johannes; Moore, Joel | To better understand the competition between these phases in the spin model, we use both exact diagonalization and the infinite density-matrix renormalization group to characterize the extended phase diagram of the spin Hamiltonian. | Session 74: Spin Liquid |
| 908 | Ba3NiIr2O9: a three-dimensional spin liquid with two magnetic sublattices | Kumar, Siddharth; Panda, Swarup; Patidar, Manju; Ojha, Shashank; Mandal, Prithwijit; Das, Gangadhar; Freeland, John; Ganesan, V; Baker, Peter; Middey, Srimanta | We devised a new strategy to find such candidates by utilizing two magnetically active ions at different crystallographic locations. | Session 74: Spin Liquid |
| 909 | Quantum spin liquids with tunable Fermi surfaces in spin-chain arrays | Leviatan, Eyal; Mross, David | Using bosonization techniques, we introduce a coupled spin-chain model that maps exactly onto a theory of two spinons coupled to an emergent photon. | Session 74: Spin Liquid |
| 910 | Design and Synthesis of Quantum Spin Liquid Candidates | Cava, Robert | In this talk I will describe some of the materials that my undergrads, grad students and postdocs have found and investigated in this regard. | Session 74: Spin Liquid |
| 911 | 1T-TaS2 as a quantum spin liquid: from bulk to atomically-thin layers. | Mañas-Valero, Samuel; Coronado, Eugenio | Here, we report on bulk and atomically thin-layers of 1T-TaS 2. | Session 74: Spin Liquid |
| 912 | Projective symmetry group classifications of quantum spin liquids on the simple cubic, body centered cubic, and face centered cubic lattices | Sonnenschein, Jonas | We perform extensive classifications of Z 2 quantum spin liquids on the simple cubic, body centered cubic, and face centered cubic lattices using a spin-rotation-invariant fermionic projective symmetry group approach. | Session 74: Spin Liquid |
| 913 | Evidence for a pressure-induced gapped spin-liquid ground state in a coupled ladder antiferromagnet C9H18N2CuBr4 | Hong, Tao; Ying, Tao; Huang, Qing; Dissanayake, Sachith; Qiu, Yiming; Turnbull, Mark; Podlesnyak, Andrey; Wu, Yan; Cao, Huibo; Umehara, Izuru; Gouchi, Jun; Uwatoko, Yoshiya; Matsuda, Masaaki; Tennant, David; Schmidt, Kai; Wessel, Stefan | Here we present a comprehensive study of the effect of hydrostatic pressure on the magnetic structure and spin dynamics in a spin-1/2 coupled ladder antiferromagnet C 9H 18N 2CuBr 4 (DLCB for short). | Session 74: Spin Liquid |
| 914 | Collective modes of magnetized spin liquids. | Starykh, Oleg | We describe how the Dzyaloshinskii-Moriya interaction can be used to detect the interaction-induced splitting of transverse spin modes at small momentum in the ESR experiments. | Session 74: Spin Liquid |
| 915 | Spin-orbit coupled heavy metals as a probe of frustrated magnetic systems | Nagarajan, Vikram; Lachman, Ella; Taghinejad, Hossein; Analytis, James | Spin-orbit coupled heavy metals as a probe of frustrated magnetic systems | Session 74: Spin Liquid |
| 916 | Hybridized quadrupolar excitations in the spin-anisotropic frustrated magnet FeI2 | Bai, Xiaojian; Zhang, Shang-Shun; Dun, Zhiling; Zhang, Hao; Huang, Qing; Zhou, Haidong; Phelan, W. Adam; Stone, Matthew; Kolesnikov, Alexander; Ye, Feng; Garlea, Vasile; Podlesnyak, Andrey; Batista, Cristian; Mourigal, Martin | Our work highlights that quantum excitations without classical counterparts can be realized even in presence of fully developed magnetic order. | Session 74: Spin Liquid |
| 917 | Dielectric properties of the linear quantum ferro-antiferromagnetic Rb2Cu2Mo3O12 | Hayashida, Shohei; Huberich, Lysander; Flavian Blasco, Daniel; Yan, Zewu; Povarov, Kirill; Gvasaliya, Severian; Zheludev, Andrey | We now report the first study of dielectric properties of Rb 2Cu 2Mo 3O 12 using single crystal samples. | Session 74: Spin Liquid |
| 918 | Theory of Competing Orders in Two Dimensional Quantum Magnets | Song, Xueyang | We explore a promising framework in 2D lattice , the Dirac spin liquid (DSL), a version of Quantum Electrodynamics (QED3) with four flavors of Dirac fermions coupled to photons. | Session 74: Spin Liquid |
| 919 | Magnetic phase diagram of the frustrated quantum ferro-antiferromagnet Cs2Cu2Mo3O12 | Flavian Blasco, Daniel; Hayashida, Shohei; Huberich, Lysander; Blosser, Dominic; Povarov, Kirill; Yan, Zewu; Gvasaliya, Severian; Zheludev, Andrey | Magnetic phase diagram of the frustrated quantum ferro-antiferromagnet Cs2Cu2Mo3O12 | Session 74: Spin Liquid |
| 920 | Valence-Bond Order in a Honeycomb Antiferromagnet Coupled to Quantum Phonons | Weber, Manuel | We use exact quantum Monte Carlo simulations to demonstrate that the Neel ground state of an antiferromagnetic SU(2) spin-1/2 Heisenberg model on the honeycomb lattice can be destroyed by a coupling to quantum phonons. | Session 74: Spin Liquid |
| 921 | Band topology of magnetic excitations in anisotropic quantum magnets | Romhanyi, Judit; Thomasen, Andreas; Shannon, Nicholas; Penc, Karlo | Here we explore the topology of multiplet excitations arising due to the local entanglement of spin and/or orbital degrees of freedom. | Session 74: Spin Liquid |
| 922 | Spin-Excitations of 1T-TaS2 and Related Magnetoresistance in the 4Hb Phase | Silber, Itai; Kimchi, Itamar; Graf, David; Kanigel, Amit; Dagan, Yoram | We interpret our data in the framework of a quantum spin liquid ground state having a large bandwidth with minority spins forming an array of singlet pairs with a continuum of coupling constants. | Session 74: Spin Liquid |
| 923 | Featureless quantum paramagnet with frustrated criticality and competing spiral magnetism on spin-1 honeycomb lattice magnet | Liu, Jianqiao; Li, Fei-Ye; Chen, Gang; Wang, Ziqiang | We study the spin-1 honeycomb lattice magnets with frustrated exchange interactions. | Session 74: Spin Liquid |
| 924 | Exact tensor network representations for a frustrated spin system at large finite S | Lo, Po-Wei; Lawler, Michael | The tensor network approach has been shown to be a powerful tool to study entanglement of frustrated spin systems. | Session 74: Spin Liquid |
| 925 | Investigating the Magnetism of the Honeycomb Arsenate KCo2(AsO4)(HAsO4) | Felder, Justin | In this talk I will discuss our ongoing investigations into characterizing the properties of KCo 2(AsO 4)(HAsO 4), including the hydrothermal synthesis of polycrystalline samples, X-ray diffraction measurements, magnetic susceptibility measurements, neutron diffraction measurements, and DFT calculations. | Session 74: Spin Liquid |
| 926 | Mode-Entangled Neutron Beams: A possible new tool for exploring Quantum Materials | Kuhn, Stephen; McKay, Samuel; Baxter, David; Broholm, Collin; Dees, Eric; Li, Fankang; Pynn, Roger; Irfan, Abu Ashik Md.; Ortiz, Gerardo; Shen, Jiazhou; Snow, William; Vangelista, Vincent | Mode-Entangled Neutron Beams: A possible new tool for exploring Quantum Materials | Session 74: Spin Liquid |
| 927 | Numerical Study of Bond-Nematic Order in Spin S=1/2 Frustrated Ferromagnets on the Square Lattice | Gohlke, Matthias; Shimokawa, Tokuro; Shannon, Nicholas | Motivated by recent experiments suggesting the existence of spin-nematic order in volborthite in applied magnetic field [Kohama2019], we revisit the square-lattice frustrated ferromagnets using a combination of modern numerical techniques, namely matrix-product states based methods and high-field exact diagonalization. | Session 74: Spin Liquid |
| 928 | Spiral Spin Liquid Regardless of Spin Component on a Honeycomb Lattice | Huang, Chun-Jiong; Liu, Jianqiao; Chen, Gang | In this work, we study the antiferromagnetic Ising, XY, and Heisenberg models with an additional second-neighbor antiferromagnetic exchange on a honeycomb lattice. | Session 74: Spin Liquid |
| 929 | Spin-Orbit-Torque Exchange Resonance in Magnetic Topological Insulators | Tang, Junyu; Cheng, Ran | We formulate the adiabatic spin-orbit torque (SOT) arising from the topological electrons in MTI as well as its reciprocal effect — topological charge pumping. | Session 75: Spin Pumping and Spin Resonance |
| 930 | Coherent spin current amplification by a non-adiabatic interaction. | Assouline, Benjamin; Brik, Marina; Bernstein, Nirel; Capua, Amir | We propose a mechanism for coherent spin current amplification in a solid-state magnetic medium device. | Session 75: Spin Pumping and Spin Resonance |
| 931 | Improvement in Spin-Torque Ferromagnetic Resonance Using Frequency Modulation | Karimeddiny, Saba; Ralph, Daniel | We show, using a Pt(6 nm)/Py sample series, that the AM causes changes to the resonant lineshape that are not captured by the conventional theoretical models of ST-FMR. | Session 75: Spin Pumping and Spin Resonance |
| 932 | A Ferromagnetic Resonance Study of Magnetic Properties in Magnetron Sputtered NixFe100-x Thin Films and Multilayers for Shielding Applications. | McMaster, Matthew; Hendren, William; Scott, Jade; Bowman, Robert | We present a systematic study of the effect of process conditions and stoichiometry on the ferromagnetic resonance (FMR) and spin wave properties [1][2] of Ni xFe 100-x alloy thin films fabricated by magnetron sputtering. | Session 75: Spin Pumping and Spin Resonance |
| 933 | Magnetization-Independent Spin Hall Effect in Ferromagnetic Trilayers | Mittelstaedt, Joseph; Buhrman, Robert; Ralph, Daniel | We observe signals with the symmetry of a magnetization-independent spin Hall effect with spin-to-charge efficiencies as large as 10% in NiFe, which is comparable to heavy metal-ferromagnet bilayers. | Session 75: Spin Pumping and Spin Resonance |
| 934 | Detection of above-NV-frequency ferromagnetic dynamics | McCullian, Brendan; Thabt, Ahmed; Gray, Benjamin; Melendez, Alex; Wolf, Michael; Safonov, Vladimir; Pelekhov, Denis; Bhallamudi, Vidya; Page, Michael; Hammel, P Chris | Here, we use microwaves to drive a low damping ferrite thin film and simultaneously detect conventional microwave absorption and NV fluorescence signals. | Session 75: Spin Pumping and Spin Resonance |
| 935 | Influence of Structural Disorder on Magnetic Relaxation in Fe Thin Films | Wu, Shuang; Smith, David; Rai, Anish; Clavel, Michael; Hudait, Mantu; Mewes, Tim; Emori, Satoru | In this work, we examine magnetic relaxation in polycrystalline and amorphous Fe films grown on different seed layers. | Session 75: Spin Pumping and Spin Resonance |
| 936 | Nonlocal Uniform-Mode Ferromagnetic Resonance Spin Pumping | Cheng, Yang; Lee, Aidan; Wu, Guanzhong; Pelekhov, Denis; Hammel, P Chris; Yang, Fengyuan | Here, we report a new nonlocal spin injection scheme using uniform-mode ferromagnetic resonance (FMR) spin pumping in Pt/ Y3Fe5O12 (YIG) lateral structures. | Session 75: Spin Pumping and Spin Resonance |
| 937 | Superconductivity-enhanced spin pumping: The role of Andreev resonances | Tanhayi Ahari, Mostafa; Tserkovnyak, Yaroslav | We describe a simple hybrid superconductor/ferromagnetic-insulator structure manifesting spin-resolved Andreev bound states in which dynamic magnetization is employed to probe spin related physics. | Session 75: Spin Pumping and Spin Resonance |
| 938 | Determination of the spin Hall angle by the inverse spin Hall effect and the spin torque ferromagnetic resonance: comparison of methods | Ben-Shalom, Ranen | In this work we measure the SHA from DC bias current dependent inverse spin Hall effect (ISHE) measurements which is more immune to the injected DC current noise and to the artefacts related the optimization problem. | Session 75: Spin Pumping and Spin Resonance |
| 939 | Spin pumping in YIG/s-wave superconductor hybrids | Carreira, Santiago; Sanchez-Manzano, David; Rouco, Victor; Sander, Anke; Collin, Sophie; Carretero, Cecile; Santamaria, Jacobo; Anane, Adbelmadjid; Villegas, Javier | The study of the magnetization dynamics of the F is thus a useful approach to investigate the spin diffusion in the SC [2]. | Session 75: Spin Pumping and Spin Resonance |
| 940 | Microwave and spin transfer torque driven coherent control in ferromagnets | Brik, Marina; Bernstein, Nirel; Capua, Amir | This technique is interesting in the context of ferromagnetic materials because of the ability to combine it with spintronics for the purpose of fundamental spin transport research, low-power information processing, and potentially future quantum bit (Qubit) applications. | Session 76: Spin Transfer and Spin Torques |
| 941 | Temperature-dependent spin-transport and current-induced torques in superconductor/ferromagnet heterostructures | Müller, Manuel; Liensberger, Lukas; Flacke, Luis; Huebl, Hans; Kamra, Akashdeep; Belzig, Wolfgang; Gross, Rudolf; Weiler, Mathias; Althammer, Matthias | We investigate the injection of quasiparticle spin currents in a NbN/Permalloy (Py) heterostructures with a Pt spin sink layer. | Session 76: Spin Transfer and Spin Torques |
| 942 | Magnetic Droplet Solitons from Unconventional Out-of-Plane Spin Orbit Torques | Klause, Robin; Hoffmann, Axel | Towards this end, we investigated with micromagnetic simulations if these unconventional OOP SOTs can generate droplet solitons in rectangular geometries. | Session 76: Spin Transfer and Spin Torques |
| 943 | Origin of Nonlinear Damping due to Mode Coupling in Auto-Oscillatory Modes Strongly Driven by Spin-Orbit Torque | Lee, Inhee; Zhang, Chi; Singh, Simranjeet; McCullian, Brendan; Hammel, P Chris | We investigate the physical origin of nonlinear damping due to mode-mode coupling between several auto-oscillatory modes driven by spin-orbit torque in constricted Py/Pt heterostructures by examining the dependence of auto-oscillation on temperature and applied field angle. | Session 76: Spin Transfer and Spin Torques |
| 944 | Controlling itinerant spin dynamics for enhanced spin transfer torque | Semenov, Yuriy; Xu, Xinyi; Kim, Ki | In this work, we reexamine the STT process by explicitly considering the dephasing between the injected electron spins. | Session 76: Spin Transfer and Spin Torques |
| 945 | Anomalous spin Hall and inverse spin Hall effects in magnetic systems | Wang, Xiang Rong | We predict anomalous spin-Hall effects (SHEs) and anomalous inverse SHEs in magnetic systems. | Session 76: Spin Transfer and Spin Torques |
| 946 | Interfacial crystal Hall effect reversible by ferroelectric polarization | Shao, Ding-Fu; Ding, Jun; Gurung, Gautam; Zhang, Shuhui; Tsymbal, Evgeny | Here, we predict the appearance of the CHE in heterostructures composed of compensated antiferromagnetic metals and non-magnetic insulators due to reduced symmetry at the interface. | Session 76: Spin Transfer and Spin Torques |
| 947 | Gate-tunable spin torque and edge current in magnetized graphene nanoribbons caused by spin-orbit coupling | Martins de Sousa, Matheus; Chen, Wei | Motivated by recent experiments that demonstrate gate-tunable spin-orbit coupling (SOC) in graphene heterostructures, we investigate the effect of SOC on the magnetic response of graphene. | Session 76: Spin Transfer and Spin Torques |
| 948 | Magnetic skyrmions probed by SP-STM: topology imprinted on the charge current and spin transfer torque | Palotas, Krisztian; Rozsa, Levente; Szunyogh, László | Our work contributes to this understanding by a theoretical investigation of the tunneling electron charge and spin transport probing magnetic skyrmions. | Session 76: Spin Transfer and Spin Torques |
| 949 | Magnetization control by angular momentum transfer from surface acoustic wave to ferromagnetic spin moments | Sasaki, Ryo; Nii, Yoichi; Onose, Yoshinori | Here we demonstrate that the phonon angular momentum of surface acoustic wave can control the magnetization of a ferromagnetic Ni film by means of the phononic-to-electronic conversion of angular momentum in a Ni/LiNbO 3 hybrid device. | Session 76: Spin Transfer and Spin Torques |
| 950 | Energy and momentum conservation in spin transfer | Mitrofanov, Alexander; Urazhdin, Sergei | We use fully quantum simulations of scattering of spin-polarized electron wavepacket by a ferromagnet modelled as a 1d spin-1/2 chain, to show that energy and momentum conservation laws impose strong restrictions on the characteristics of magnetic excitations generated by spin transfer. | Session 76: Spin Transfer and Spin Torques |
| 951 | Ballistic-to-diffusive transition in spin chains with broken integrability | Ferreira, João; Filippone, Michele | We study the ballistic-to-diffusive transition induced by the weak breaking of integrability in a boundary-driven XXZ spin-chain. | Session 76: Spin Transfer and Spin Torques |
| 952 | Spin current driven Rabi oscillations in a ferromagnetic film | Bernstein, Nirel; Brik, Marina; Assouline, Benjamin; Yang, See-Hun; Capua, Amir | In this work we take the non-adiabatic interaction in a magnetic medium a step further by replacing the microwave electromagnetic field with an oscillatory spin current that is generated by the spin Hall effect. | Session 76: Spin Transfer and Spin Torques |
| 953 | Spin transfer torque driven by interfacial roughness and spin-orbital scattering | Shen, Pengtao; Mehraeen, M.; Zhang, Shulei | In this work, we theoretically investigate a spin-transfer torque effect in a ferromagnetic metal layer emanating from surface roughness and Rashba spin-orbit scattering in the presence of an in-plane charge current. | Session 76: Spin Transfer and Spin Torques |
| 954 | Planar Hall Driven Torque in a Ferromagnet/Nonmagnet/Ferromagnet System | Safranski, Christopher; XU, Jun-Wen; Kent, Andrew; Sun, Jonathan | We find the strength of this effect to be comparable to that of the spin Hall effect. | Session 76: Spin Transfer and Spin Torques |
| 955 | Multi-domain memristive magnetization switching in [Co/Ni]X/PtMn heterostructures | Krishnaswamy, Gunasheel Kauwtilyaa; Kurenkov, Alexander; Sala, Giacomo; Baumgartner, Manuel; Krizakova, Viola; Nistor, Corneliu; Maccherozzi, Francesco; Dhesi, Sarnjeet; Fukami, Shunsuke; Ohno, Hideo; Gambardella, Pietro | We use x-ray photoemission electron microscopy to image the FM and AFM domains of [Co/Ni] X/PtMn layers at intermediate switching states as a function of injected currents. | Session 77: Spin Transport and Spintronics |
| 956 | Magnetic domain-wall inverter and diode | Luo, Zhaochu; Stefan, Schären; Hrabec, Aleš; Dao, Phuong; Sala, Giacomo; Finizio, Simone; Feng, Junxiao; Mayr, Sina; Raabe, Jörg; Gambardella, Pietro; Heyderman, Laura | We will show that such a device can work as a DW diode, thus extending the operation of DW logic to the AC signal regime. | Session 77: Spin Transport and Spintronics |
| 957 | The impact of morphology and hybridization on the Dzyaloshinskii-Moryia Interaction | Nembach, Hans | We introduced a Cu dusting layer at a CoFeB/Pt interface to modify the Heisenberg exchange locally. | Session 77: Spin Transport and Spintronics |
| 958 | Spin Orbit Torque Domain Wall-Magnetic Tunnel Junction Devices and Circuits for In-Memory and Neuromorphic Computing | Alamdar, Mahshid; Leonard, Thomas; Cui, Can; Rimal, Bishweshwor P.; Xue, Lin; Akinola, Otitoaleke; Xiao, Tianyao Patrick; Friedman, Joseph; Bennet, Christopher; Marinella, Matthew; Incorvia, Jean Anne | We propose three-terminal DW-MTJ in-memory computing devices that resolve challenges with traditional DW-MTJs by using perpendicular magnetic anisotropy (PMA) with more robustness to thermal fluctuations than in-plane magnetic anisotropy, spin-orbit torque switching that requires less switching current than spin transfer torque, and an optimized lithography process to produce average device tunnel magnetoresistance TMR = 164%, close to the expected highest TMR seen in PMA MTJs, and resistance-area product RA = 31 Ω.μm 2 , close to the RA of the unpatterned film. | Session 77: Spin Transport and Spintronics |
| 959 | A Low Energy-Barrier Magnet based Analog Stochastic Neuron | Ganguly, Samiran; Ghosh, Avik | In this work, we propose a compact energy-efficient Analog Stochastic Neuron device built from a low energy-barrier magnetic tunnel junction and a few silicon transistors that can function as a compact drop-in replacement for stochastic sigmoidal neurons in a “software” model of a neural network (NN), allowing building of large scale NN circuits where neurons are first class objects. | Session 77: Spin Transport and Spintronics |
| 960 | Controlling magnon interaction by a nanoscale dipole switch | Etesamirad, Arezoo; Rodriguez, Rodolfo; Ivanov, Boris; Katine, Jordan; Krivorotov, Ilya; V. Verba, Roman; Tyberkevych, Vasyl; Barsukov, Igor | Here, we propose an approach for controlling magnon scattering by a nanoscale dipole switch. | Session 77: Spin Transport and Spintronics |
| 961 | Energy dissipation in macroscopic tunnel junctions | Rios E, Leonardo; Patino, Edgar; Govind Kelkar, Neelima | In this work, we show an I-V characterization of a macroscopical high quality tunnel junction of the form Al/Al2O3/Al and its deviation with the theoretical Simmons model for certain voltages. | Session 77: Spin Transport and Spintronics |
| 962 | Highly efficient spin-orbit torque switching of perpendicular magnetization using topological insulators with a high thermal stability | Pan, Quanjun; Liu, Yuting; Wu, Hao; Zhang, Peng; Huang, Hanshen; Che, Xiaoyu; Wu, Yingying; Dai, Bingqian; Shao, Qiming; Wang, Kang-Lung | In this talk, we will demonstrate the high-quality integration of perpendicularly magnetized FM with TI through a light metal insertion layer and achieved efficient magnetization switching at ambient temperature. | Session 77: Spin Transport and Spintronics |
| 963 | Resonance-enhanced exchange coupling for voltage-controlled magnetic switching in the scaled magnetic memory device | Sayed, Shehrin; Hsu, Cheng-Hsiang; Roschewsky, Niklas; Yang, See-Hun; Salahuddin, Sayeef | We will discuss a voltage-controlled magnetic tunnel junction that uses a resonant tunneling barrier instead of a single oxide barrier. | Session 77: Spin Transport and Spintronics |
| 964 | Manipulating Berry curvature of SrRuO3 thin films via epitaxial strain | Liu, Zhiwei; Chen, Hanghui; Tian, Di; Shen, Shengchun; Zhou, Yu; Yu, Pu | In this work, we carry out systemic transport studies and first-principles calculations to investigate the change in AHC of SrRuO3 thin films both under compressive and tensile strains. | Session 77: Spin Transport and Spintronics |
| 965 | Ultrafast spintronics with terahertz radiation | Kampfrath, Tobias | Ultrafast spintronics with terahertz radiation | Session 77: Spin Transport and Spintronics |
| 966 | Real-time Hall-effect detection of current-induced magnetization dynamics in ferrimagnets | Sala, Giacomo; Krizakova, Viola; Grimaldi, Eva; Lambert, Charles-Henri; Devolder, Thibaut; Gambardella, Pietro | Here we present a novel concept to perform time-resolved measurements of Hall and transverse magnetoresistance signals. | Session 78: Spin Waves and Dynamics |
| 967 | Magneto-Optical Studies of Static and Dynamic Spin Alignment in Ferrimagnetic Thin Films | Liu, Hengzhou; Shoup, Jenae; Khadka, Durga; Thapaliya, Tilak; Huang, Sunxiang; Karaiskaj, Denis; Arena, Dario | We investigate a series of ferrimagnetic thin film samples consisting of (FeCo) 1-xGd x and Fe 1-xGd x where the Gd content was varied to modify magnetic parameters. | Session 78: Spin Waves and Dynamics |
| 968 | Surface properties influence on spin wave modes of ferromagnetic films | Arias, Rodrigo; Armijo, Ignacio | Thus, in order to relate films surface properties to the behavior of spin waves, we study theoretically, within the micro magnetic approximation, spin wave modes under obliquely applied magnetic fields to the film, since in this case the surface properties have a more clear influence in the spin wave properties. | Session 78: Spin Waves and Dynamics |
| 969 | Tuneable, Rare-Earth Free, Synthetic Ferrimagnets for Optical Switching | Scott, Jade; Hendren, William; Bowman, Robert; Hicken, Robert; Dabrowski, Maciej; Burn, David; Van der Laan, Gerrit; Frisk, Andreas; N’Diaye, Alpha | We have shown it is possible to engineer the magnetic properties of a series of compensating Ni 3Pt/Ir/Co SFM exhibiting perpendicular magnetic anisotropy (PMA). | Session 78: Spin Waves and Dynamics |
| 970 | Quasiparticle and Spin Dynamics in MnBi2Te4 using time-resolved magneto-optical Kerr spectroscopy. | Poore, Maxwell; Kim, Peter; Padmanabhan, Hari; Stoica, Vladimir; Lee, Seng Huat; Mao, Zhiqiang; Gopalan, Venkatraman; Averitt, Richard | In this presentation, we will delineate the field, fluence, and temperature dependence of the long time dynamics in this enigmatic antiferromagnetic topological insulator. | Session 78: Spin Waves and Dynamics |
| 971 | Interactions between spin wave and magnetic domain structures | Liu, Luqiao | In this talk, I will describe our recent experimental activities on investigating the mutual interactions between magnetic domain wall and spin wave, where magnetic domain walls manipulate the phase and magnitude of spin wave, and a strong spin wave in turn moves the position of magnetic domain walls [1]. | Session 78: Spin Waves and Dynamics |
| 972 | Wavelength-dependence of the spin-orbit optical properties of Au | Ortiz, Víctor; Coh, Sinisah; Wilson, Richard | We perform time-resolved Magneto optic Kerr effect (TR-MOKE) measurements on Au/Co heterostructures. | Session 78: Spin Waves and Dynamics |
| 973 | Ultrafast Magnetic Spectroscopy and Scattering Using Tabletop High Harmonic Sources | Johnsen, Peter; Ryan, Sinead; Gentry, Christian; Cating-Subramanian, Emma; Kapteyn, Henry; Murnane, Margaret | We present spectroscopy and scattering measurements of nanomagnetic materials using EUV high harmonic sources. | Session 78: Spin Waves and Dynamics |
| 974 | Optical spin-orbit torque and its application for spin-wave excitation | Choi, Gyung-Min | In this work, we report optical spin-orbit torques in heavy metal/ferromagnet heterostructures [1]. | Session 78: Spin Waves and Dynamics |
| 975 | Measurement of Current Induce Spin Orbit Torque effects using Optical Ferromagnetic Resonance | Grover, Bharat; Hazra, Binoy Krishna; Pal, Banabir; Ma, Tianping; Choudhury, Samiran; Jeon, Jae; Bernstein, Nirel; Capua, Amir; Parkin, Stuart | Here we discuss a novel optical technique called the optically detected ferromagnetic resonance (O-FMR) to measure the spin Hall angle (SHA) in a conventional Py|Pt bilayer system [2]. | Session 78: Spin Waves and Dynamics |
| 976 | Ferrimagnetic Spin Dynamics beyond Ferro- and Antiferro-magnetic Scenarios | Guo, Mingda; Zhang, Hantao; Cheng, Ran | By varying the ratio of sublattice spins, we demonstrate how spin dynamics in FIMs is intrinsically connected to its ferro- and antiferro-magnetic counterparts, and, more importantly, under what conditions FIMs can go beyond these scenarios. | Session 78: Spin Waves and Dynamics |
| 977 | Spin-polarised current manipulation of Bloch points | Beg, Marijan; Lang, Martin; Fangohr, Hans | In this work, using micromagnetic simulations, we explore if those magnetisation states can be manipulated using spin-polarised currents. | Session 79: Spin and Heat Transports |
| 978 | Dynamic nuclear spin polarization by the Edelstein effect at Bi(111) surfaces | Jiang, Zijian; Soghomonian, Victoria; Heremans, Jean | Dynamic nuclear spin polarization by the Edelstein effect at Bi(111) surfaces | Session 79: Spin and Heat Transports |
| 979 | Enhancement of nuclear spin-spin interactions by collective electronic modes | Carr, Stephen; Barrett, Eric; Snider, Charles; Feldman, Dmitri; Ramanathan, Chandrasekhar; Marston, Brad; Mitrovic, Vesna | We propose how electronic phases can also introduce feedback loops to nuclear spin behavior. | Session 79: Spin and Heat Transports |
| 980 | Angular momentum and pseudo angular momentum in magnetic materials | Streib, Simon | Based on Noether’s theorem, I demonstrate that the recently discussed orbital angular momenta of phonons [1,2] and magnons [3,4] are pseudo angular momenta. | Session 79: Spin and Heat Transports |
| 981 | Measurement of Phonon Angular Momentum via the Einstein-de Haas Effect, Fiber-Optic Interferometry, and a High-Q Oscillator | Sadam, Akhil; Dwyer, Matthew; Shoemaker, Devan; Passement, Raul; Hussain, Syed; Markert, John | We report initial design and use of capacitive and fiber-optic-interferometer systems to measure the predicted [1] macroscopic phonon angular momentum. | Session 79: Spin and Heat Transports |
| 982 | Effects of CoFe Alloy Composition on Non-Electronic Thermal Transport | Mohan, Ramya; Ortiz, Victor; Zhao, Ji-Cheng; Coh, Sinisa; Wilson, Richard | In this talk, I investigate the effect of composition on thermal transport. | Session 79: Spin and Heat Transports |
| 983 | Anomalous heat and spin transport induced by in-plane DM interaction in magnetic insulators | Park, Sungjoon; Nagaosa, Naoto; Yang, Bohm-Jung | We discuss anomalous heat and spin transport induced by in-plane Dzyaloshinskii-Moriya interaction (DMI) in two-dimensional magnetic insulators with collinear out-of-plane magnetic order. | Session 79: Spin and Heat Transports |
| 984 | Interplay of Magnetism and Phonons in Ultrafast Dynamics of Magnetic Topological Insulator MnBi2Te4 | Kim, Peter; Poore, Maxwell; Padmanabhan, Hari; Stoica, Vladimir; Lee, Seng Huat; Mao, Zhiqiang; Gopalan, Venkatraman; Averitt, Richard | We investigate the ultrafast dynamics of the antiferromagnetic topological insulator MnBi 2Te 4 using a combination of high-sensitivity transient reflectivity and time-resolved magneto-optical measurements. | Session 79: Spin and Heat Transports |
| 985 | Influence of Thermal Noise on the Frequency Resolution of a Sweep-Tuned Spectrum Analyzer | Elphick, Peter; Louis, Steven; Tyberkevych, Vasyl; Slavin, Andrei | Influence of Thermal Noise on the Frequency Resolution of a Sweep-Tuned Spectrum Analyzer | Session 79: Spin and Heat Transports |
| 986 | Quantitative temperature dependence of the Spin Seebeck effect in a mixed valent manganite | De, Avirup; Ghosh, Arup; MANDAL, RAJESH; Ogale, Satishchandra; Nair, Sunil | Here, we report on the temperature dependence of the longitudinal spin Seebeck effect (LSSE) in the mixed valent manganite La 0.7Ca 0.3MnO 3. | Session 79: Spin and Heat Transports |
| 987 | Coherent spin-phonon oscillations and demagnetization dynamics in the van der Waals ferromagnet CrI3 | Padmanabhan, Prashant; Buessen, Finn; Tutchton, Roxanne; Kwock, Kevin; Gilinsky, Samuel; Lee, Min-Cheol; McGuire, Michael; Singamaneni, Srinivasa; Yarotski, Dmitry; Paramekanti, Arun; Zhu, Jian-Xin; Prasankumar, Rohit | Here, we report on the non-equilibrium lattice and spin dynamics in CrI 3 across the magnetic phase transition. | Session 79: Spin and Heat Transports |
| 988 | Spin-dependent Seebeck and Nernst effects in a skyrmion ideal gas | Zadorozhnyi, Andrei; Dahnovsky, Yuri | From the numerical solution of the matrix Boltzmann equation for a nonequilibrium distribution function and the Lippmann-Schwinger equation for a T-matrix we find the strong nonlinear behaviors in the thermoelectric coefficients depending on skyrmion/vortex diameters and electron concentrations. | Session 79: Spin and Heat Transports |
| 989 | Thermal transport in yttrium iron garnet at very high magnetic fields | Ratkovski, Danilo; Balicas, Luis; Bangura, Alimami; Machado, Fernando; Rezende, Sergio | Here, we report measurements of the thermal conductivity in YIG under magnetic fields up to 31.4 T to increase the magnon energy gap, to suppress the magnon contribution and isolate that of the phonons relative to their behavior at zero-field. | Session 79: Spin and Heat Transports |
| 990 | Large zero-field Hall & Nernst effects and AMR in aligned MnBi / Bi composites | Wooten, Brandi; Vandaele, Koen; Boona, Steve; Heremans, Joseph P | Large zero-field Hall & Nernst effects and AMR in aligned MnBi / Bi composites | Session 79: Spin and Heat Transports |
| 991 | Spin current transport in EuIG thin films grown by pulsed laser deposition | Yuan, Wei; Liu, Haoyu; Ortiz, Victor; Shi, Jing | In this work, we investigate the spin transport in europium iron garnet (EuIG) thin films using spin Seebeck effect (SSE) and nonlocal transport. | Session 79: Spin and Heat Transports |
| 992 | Tuning Spin Current Injection at Ferromagnet-Nonmagnet Interfaces by Molecular Design | Wittmann, Angela; Schweicher, Guillaume; Broch, Katharina; Novak, Jiri; Lami, Vincent; Cornil, David; McNellis, Erik; Zadvorna, Olga; Venkateshvaran, Deepak; Takimiya, Kazuo; Geerts, Yves; Cornil, Jérôme; Vaynzof, Yana; Sinova, Jairo; Watanabe, Shun; Sirringhaus, Henning | Here, we use this technique to systematically study spin injection from a metallic ferromagnet permalloy, Ni 80Fe 20, into dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT), one of the best performing small molecule organic semiconductors to date. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 993 | Intrinsic spin dynamics in MAPbI3 single crystals with low defects | Yao, Yue; Sheffield, Matthew; Hewa Walpitage, Heshan; Brown Heft, Isaac; Liu, Ye; Ni, Zhenyi; Huang, Jinsong; Li, Yan | We measured time-resolved Kerr rotation (TRKR) on these high quality MAPbI3 single crystals, and showed that the spin lifetime improves by an order of magnitude, which suggests the intrinsic origin of this property. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 994 | First Principles Calculation of the Electronic Structure of V(TCNE)2 | Shi, Yueguang; Flatté, Michael | Here we explore the electronic structure using a plane-wave code VASP and XC functional Heyd-Scuseria-Ernzerhof (HSE06). | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 995 | Measuring charge carrier spin relaxation times in a π-conjugated polymer using pulsed electrically detected magnetic resonance in absence of magnetic polarization | Tennahewa, Taniya; Malissa, Hans; Hosseinzadeh, Sanaz; Atwood, Sabastian; Popli, Henna; Lupton, John; Boehme, Christoph | We report measurements of the spin relaxation times T 1 and T 2 of charge carrier spin states in the π-conjugated polymer SY-PPV at room temperature under low static magnetic field conditions (1mT ≤ B 0 ≤ 4mT), in near absence of spin polarization, using a pulsed electrically detected magnetic resonance (pEDMR) scheme, where spin-permutation symmetry dependent charge carrier recombination currents are detected after short, coherent (pulsed) Hahn-echo and inversion recovery pulse trains [1] are applied to organic light emitting diodes (OLED) devices. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 996 | Detection of multiphoton magnetic dipole transitions using spin-dependent charge carrier recombination currents and an amplitude-modulated continuous wave electrically detected magnetic resonance scheme | Atwood, Sabastian; Nahlawi, Adnan; Mkhitaryan, Vagharsh; Hosseinzadeh, Sanaz; Tennahewa, Taniya; Popli, Henna; Malissa, Hans; Lupton, John; Boehme, Christoph | We study nonlinear magnetic resonance phenomena such as the Bloch-Siegert shift and multiphoton magnetic dipole transitions [1] in the high-drive regime using electrically detected magnetic resonance (EDMR) spectroscopy of organic light emitting diodes with conductive polymers as active layers [2]. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 997 | In-Plane Dual-Gated Spin-Valve Device Based on the Zigzag Graphene Nanoribbon | Zhou, Min; Jin, Hao; Xing, Yanxia | Using the nonequilibrium Green’s function combined with density-functional theory, we study the transport properties of the zigzag graphene nanoribbon (ZGNR). | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 998 | First-principles calculation of charge carrier mobility in graphene with absorbed magnetic molecules using complex band structure | Brooks, Andrew; Liu, Shuanglong; Jiang, Tao; Le, Duy; Rahman, Talat; Cheng, Hai-Ping; Zhang, Xiaoguang | Our method determines the constant complex potential that must be added to a perfect crystal to induce the scattering effects seen in a crystal with defects, which we deduce from a series of complex band calculations. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 999 | Reduction of charge noise in shallow GaAs/AlGaAs heterostructures with insulated gates | Liang, Shuang; Nakamura, James; Gardner, Geoff; Manfra, Michael | We observe that GaAs/AlGaAs QPC devices with an Al2O3 dielectric between the metal gates and semiconductor exhibit significantly lower charge noise compared to devices with only Schottky gates and no dielectric. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 1000 | Spin drift-diffusion for two-subband quantum wells | de Assis, Ismael; Raimondi, Roberto; Ferreira, Gerson | To this end, the study of the spin diffusion in two-dimensional electron gases (2DEGs) shows that when the Rashba and Dresselhaus spin-orbit couplings (SOC) are balanced, a persistent spin helix regime arises. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 1001 | Electro-magnetic and mechanical properties of Ti3C2, and layer substituted mxenes. | Karn, Alok | Employing the pseudo-potential based density functional theory (DFT) with general gradient approximation (GGA), and GGA with coulomb exchange interaction correction (GGA + U), electro-magnetic and mechanical properties are calculated. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 1002 | TDDFT for spin waves in two-dimensional systems: orbital-based approximations | Anderson, Matthew; Ullrich, Carsten | Instead, we use orbital-based approximations, most notably the Singwi-Tosi-Land-Sjolander (STLS) approach, generalized to systems with noncollinear spin. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 1003 | Evidence of magnon generation in the fractional quantum Hall effect | Wang, Ying; Wan, Zhong; West, Ken; Baldwin, Kirk; Pfeiffer, Loren; Rokhinson, Leonid | In this work, we study spin relaxation at a filling factor 2/3, where the transition between polarized ( p) and unpolarized ( u) states can be controlled by electrostatic gates. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 1004 | Raman Spectroscopy and Photoluminescence of Vanadium Tetracyanoethylene | Cheung, Hil; Chilcote, Michael; Cormode, Donley; Yusuf, Huma; Shi, Yueguang; Johnston-Halperin, Ezekiel; Flatté, Michael; Fuchs, Gregory | Here we use confocal microscopy, microfocused Raman spectroscopy, and ferromagnetic resonance to study V[TCNE] x≈2 and its ageing process. | Session 80: Spin in Organic Semiconductors and 2D Systems |
| 1005 | Magnetism in V doped monolayer ZrS2 | Julieth, Greis; Tang, Zhao; Lopez-Candales, Gabe; Zhang, Peihong | In this work, we present density functional theory based electronic structure calculations of V doped monolayer ZrS 2. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1006 | Probing spin-polarized band structure of V-doped WSe2 | Duong, Dinh Loc; Jiang, Jinbao; Nguyen, Lan-Anh T.; DHAKAL, KRISHNA PRASAD; Lee, Young-Hee | Here, we report a giant Zeeman shift from the spin-polarized state in tungsten diselenide (WSe 2) doped with a small amount of vanadium atoms (~0.15%) by investigating resonant magnetotunneling spectroscopy of a vertical graphite/V-WSe 2/graphite heterojunction. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1007 | Probing zero-field splitting at spin-1 centers through dc magnetoresistance | McMillan, Stephen; Flatté, Michael | We extend this method to the spin-1 neutral divacancy in 4H-SiC, where measurements of zero-field splittings on the order of GHz are resolvable using applied fields in the range of 50 mT as long as the carrier occupation time at the divacancy exceeds 1 ns. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1008 | Scanning Tunneling Microscopy Studies of Fe on GaAs (110) Surface | Smith, Rebekah; Sahin, Cuneyt; Flatté, Michael; Gupta, Jay | Here we investigate the interaction of Fe adatoms with a host GaAs (110) surface using STM. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1009 | Spin relaxation in a silicon-based quantum dot qubit | Dobrovitski, Viatcheslav | In this talk we will discuss the relaxation mechanisms that govern the lifetime of a spin in the silicon quantum dot. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1010 | Spin-orbit interaction in InSb double quantum dots characterized using dispersive gate sensing | Han, Lin; Chan, Michael; De Jong, Damaz; Prosko, Christian; Li, Kongyi; Badawy, Ghada; Bakkers, Erik; Kouwenhoven, Leo; Koski, Jonne; Malinowski, Filip; Pfaff, Wolfgang | We experimentally investigate the consequences of a strong spin orbit interaction in double quantum dot defined in an InSb nanowire. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1011 | First-principles calculations of copper vacancy centers in zinc sulfide | Sahin, Cuneyt; Flatté, Michael | Here we calculate the electronic and structural properties of copper-vacancy complexes in zinc sulfide (ZnS) within the density functional theory. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1012 | Generalization of the linked cluster expansion computational method for arbitrary pulse sequences | Ouellet, Mathieu; Bassett, Danielle; Bassett, Lee | We present a diagrammatic computational approach to evaluate the central electronic spin problem in the presence of non-Markovian bath dynamics for arbitrary electron spin control sequences. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1013 | Radio-Frequency manipulation of strongly interacting electron-nuclear spin systems. | Zangara, Pablo; Pagliero, Daniela; Henshaw, Jacob; Ajoy, Ashok; Acosta, Rodolfo; Manson, Neil; Reimer, Jeffrey; Pines, Alexander; Meriles, Carlos | We use optical spin pumping of NV-hosting diamond to investigate the impact of a continuous radio-frequency (RF) drive on the generation of 13C spin polarization. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1014 | Quantum-impurity relaxometry of magnons in thin films: role of chirality | Rustagi, Avinash; Bertelli, Iacopo; van der Sar, Toeno; Upadhyaya, Pramey | Here, we present this theory highlighting the role of chirality and show that our theory 1) is in excellent quantitative agreement with recent NV-relaxometry experiments, and 2) predicts crossover between the two NV ESR relaxation rates as a key signature of the chiral coupling between the NV and magnons which is corroborated by new experiments on Nickel thin films interfaced with NV QI. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1015 | Nanoscale features of magnetic dopants in 2D systems with spin-orbit interaction | Rodrigues da Cruz, Adonai; Flatté, Michael | We present a theory of magnetic dopant in a two-dimensional electron gas model with Rashba-Bychkov and Dresselhaus spin-orbit couplings. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1016 | Spin-orbit mediated modulation of defect-phonon coupling in transition metal dichalcogenides | Chakraborty, Chitraleema; Ciccarino, Christopher; Narang, Prineha | Therefore, we present theoretical calculations and analysis of quantum defects in 2D materials. | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1017 | Electron ground state g-factor in embedded InGaAs quantum dots: An atomistic study | Kahraman, Mustafa; Bulutay, Ceyhun | We present atomistic computations within an empirical pseudopotential framework for the electron s-shell ground state g-tensor of embedded InGaAs quantum dots (QDs). | Session 81: Spin in Semiconductors for Quantum Information Science |
| 1018 | Magnetic tunnel junctions and magnetic logic circuits driven by spin-orbit torques | Gambardella, Pietro | This talk will present time-resolved measurements of magnetization reversal driven by SOTs in 3-terminal MTJ devices and show how the combination of SOT, spin transfer torque, and voltage control of magnetic anisotropy leads to reproducible sub-ns magnetization reversal with a very narrow spread of the switching time distributions [1, 2]. | Session 82: Spin-Orbit Torques |
| 1019 | Deterministic switching of a perpendicularly polarized magnet using unconventional spin-orbit torques in WTe2 | Kao, I hsuan; Muzzio, Ryan; Zhang, Hantao; Zhu, Menglin; Gobbo, Jacob; Weber, Daniel; Rao, Rahul; Li, Jiahan; Edgar, James; Goldberger, Joshua; Yan, Jiaqiang; Mandrus, David; Hwang, Jinwoo; Cheng, Ran; Kotach, Jyoti; Singh, Simranjeet | The exploitation of low-crystal symmetries in emergent quantum materials offers a unique approach to achieve spin-orbit torque with unconventional form 5,6. | Session 82: Spin-Orbit Torques |
| 1020 | Effect of interfacial intermixing on spin-orbit torque in Co/Pt bilayers | Baez Flores, Giovanni; Belashchenko, Kirill | Using the first-principles non-equilibrium Green’s function technique [1] with supercell disorder averaging, we study the influence of interfacial intermixing on the spin-orbit torque in Co/Pt (111) bilayers. | Session 82: Spin-Orbit Torques |
| 1021 | Voltage Controlled Spin-Orbit Torque Switching in W/CoFeB/MgO | Xu, Jinsong; Chien, Chia-Ling | In this work, we show voltage-controlled spin-orbit torque (SOT) switching in W/CoFeB/MgO films with perpendicular magnetic anisotropy (PMA) as administered through SrTiO 3 with a high dielectric constant. | Session 82: Spin-Orbit Torques |
| 1022 | Strong, anisotropic in-plane and out-of-plane damping-like spin-orbit torque in epitaxial RuO2 | Bose, Arnab; Schreiber, Nathaniel; Nair, Hari; Zhang, Xiyue; Jain, Rakshit; Cham, Thow Min Jerald; Sun, Jiaxin; Muller, David; Buhrman, Robert; Schlom, Darrell; Ralph, Daniel | We study spin torques in RuO 2/Permalloy bilayers grown on TiO 2 substrates by second-harmonic Hall and spin-torque ferromagnetic resonance techniques [1]. | Session 82: Spin-Orbit Torques |
| 1023 | Prediction of Purely Interfacial Giant Antidamping Spin-Orbit Torque induced by Skew Scattering | Veneri, Alessandro; Ferreira, Aires | In this talk, we present a new microscopic framework that accounts for intrinsic and extrinsic transport effects on equal footing and nonperturbatively, for the first time [2-3]. | Session 82: Spin-Orbit Torques |
| 1024 | Spin-Orbit Torque Switching of Ferromagnets and Antiferromagnets | Chien, Chia-Ling | We discuss schemes that can achieve field-free SOT switching of FM with perpendicular magnetic anisotropy (PMA). | Session 82: Spin-Orbit Torques |
| 1025 | Electric field induced exceptional points and mode attraction in a spin-orbit torque oscillator | Proskurin, Igor; Stamps, Robert | We consider resonant spin-orbit torque system in applied electric field and demonstrate that this system can realize exceptional points in the energy spectrum of the magnetic oscillator. | Session 82: Spin-Orbit Torques |
| 1026 | Magneto-Optical Detection of Spin-Orbit Torque Phenomena Using Sagnac Interferometer microscope | Huang, Zhengjie; Vetter, Eric; Xiong, Yuzan; Zhang, Wei; Sun, Dali | Our work provides a promising continuous-wave magneto-optical approach to optically characterize the static spin Hall angle in a range of SOT devices without the AC current modulation. | Session 82: Spin-Orbit Torques |
| 1027 | Spin transparency of Pt-based heavy metal/ferromagnet interface | Zhu, Lijun; Ralph, Daniel; Buhrman, Robert | In this talk, we will discuss the strategies developed to effectively minimize or even eliminate spin backflow and spin memory loss. | Session 82: Spin-Orbit Torques |
| 1028 | Thermal stability and memristive spin-orbit torque switching at elevated temperature | Liao, Wei-Bang; Chen, Tian-Yue; Hsiao, Yu-Chan; Pai, Chi-Feng | In this work, through comprehensive temperature-dependent study on standard W/CoFeB/MgO and field-free CoFeB/W/CoFeB/MgO devices, the SOT efficacies of both are found to be invariant from 298 K to 353 K. 1 Δ is shown to degrade with increasing the temperature. | Session 82: Spin-Orbit Torques |
| 1029 | One-dimensional antilocalization of electrons from spin disorder probed by nonlinear Hall effect | Wang, Yang; Wang, Yong; Wang, Tao; Wang, Xinhao; Ou, Yu-Sheng; Ji, Yi; Doty, Matthew; Law, Stephanie; Xiao, John | We propose a phenomenological model and suggest the enhancement of the NLHE below 50 K as evidence for strict one-dimensional antilocalization of electrons from spin disorder [3]. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1030 | Spin-orbit torques generated by low-symmetry ZrTe3 | Cham, Thow Min Jerald; Gupta, Vishakha; Vareskic, Bozo; Jain, Rakshit; BOSE, ARNAB; Ralph, Daniel | We report measurements of spin-orbit torques generated by ZrTe 3 and other low symmetry materials to understand the existence and strength of the out-of-plane anti-damping spin-orbit torques. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1031 | Charge-to-Spin Interconversion in Low-Symmetry Topological Materials | Vila Tusell, Marc; Hsu, Chuang-Han; Garcia, Jose; Benítez, L. Antonio; Waintal, Xavier; Valenzuela, Sergio; Pereira, Vitor; Roche, Stephan | We theoretically show that the reduced symmetry of strong spin-orbit coupling materials such as MoTe 2 or WTe 2 enables a new form of oblique spin Hall effect (SHE), characterized by large and robust in-plane spin polarizations. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1032 | Electric field control of spin-orbit torque switching in a spin-orbit ferromagnet single layer | Jiang, Miao; Asahara, Hirokatsu; Ohya, Shinobu; Tanaka, Masaaki | Here, we report a successful control of a full SOT switching via an external electric field in a single-crystalline ferromagnetic semiconductor (Ga,Mn)As with strong spin-orbit coupling 1,2. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1033 | Nonlinear spintronics with inversion symmetry breaking | He, Pan | Here, we explore the emerging nonlinear spintronic phenomena in the inversion-asymmetric nonmagnetic materials with SOC. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1034 | A quantum theory of the nonlinear Hall effect | Du, Zongzheng; Wang, Chunming; Sun, Hai-Peng; Lu, Haizhou; Xie, X. C. | We present both qualitative and quantitative differences between the quantum theory and the semiclassical theories. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1035 | Probing charge-to-spin and spin-to-charge transduction in heterostructures of 2D van der Waals magnets | Gupta, Vishakha; Cham, Thow Min Jerald; Vareskic, Bozo; Ralph, Daniel | In this work, we probe the charge-to-spin conversion in heterostructures of 2D magnetic insulators with heavy metals. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1036 | Optical readout of spin-orbit torque acting on magnetic thin films | Luo, Yunqiu (Kelly); Gupta, Vishakha; Karimeddiny, Saba; Cham, Thow Min Jerald; Mak, Kin Fai; Shan, Jie; Ralph, Daniel | In this talk, I will discuss recent progress in using magneto-optic Kerr effect (MOKE) microscopy technique to probe SOT manipulation of both conventional metallic ferromagnets and van der Waals magnets. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1037 | Spin and charge interconversion probed via spin torque ferromagnetic resonance and spin pumping in the archetypal Dirac semimetal Cd3As2 | Yanez, Wilson; Ou, Yongxi; Xiao, Run; Held, Jacob; Koo, Jahyun; Pillsbury, Timothy; Rable, Jeffrey; Xiao, Di; Gonzalez, Enrique; Richardella, Anthony; Mkhoyan, K.; Yan, Binghai; Samarth, Nitin | We report spin-to-charge and charge-to-spin conversion at room temperature in heterostructures of the archetypal Dirac semimetal Cd 3As 2 and Ni 80Fe 20, detected by both spin torque ferromagnetic resonance and ferromagnetic driven spin pumping. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1038 | Ultrafast reorientation of the Néel vector in antiferromagnetic Dirac semimetals | Ono, Atsushi; Ishihara, Sumio | We propose a theoretical framework for the ultrafast dynamics in AFM Dirac semimetals, taking not only localized magnetic moments but also itinerant electrons into account. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1039 | Spin-orbit torque switching in sputtered BiTe driven by spin Hall effect | Chen, Tian-Yue; Peng, Cheng-Wei; Liao, Wei-Bang; Tsai, Tsung-Yu; Yen, Hung-Wei; Pai, Chi-Feng | In this work, we use conventional magnetron sputtering to deposit the non-epitaxial BiTe/ferromagnet heterostructures. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1040 | Spin-phonon relaxation of Silicene and Germanene from first-principles density-matrix dynamics | Takenaka, Hiroyuki; Xu, Junqing; Sundararaman, Ravishankar; Ping, Yuan | Here, we investigate spin relaxation of silicene and germanene with ab-initio density matrix dynamics with SOC and electron-phonon couplings. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1041 | Layer- and Gate-tunable Spin-Orbit Coupling in a 2D semiconductor probed by Shubnikov-de Haas Oscillations. | Shcherbakov, Dmitry; Stepanov, Petr; Memaran, Shahriar; Wang, Yaxian; Xin, Yan; Yang, Jiawei; Wei, Kaya; Baumbach, Ryan; Zheng, Wenkai; Watanabe, Kenji; Taniguchi, Takashi; Bockrath, Marc; Smirnov, Dmitry; Siegrist, Theo; Windl, Wolfgang; Balicas, Luis; Lau, Chun Ning | We utilize tunability of ultrathin field-effect transistors combined with high mobility of indium selenide (InSe) to demonstrate SOC and to vary it over an unprecendently wide range by breaking the inversion symmetry with out-of-plane electric field. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1042 | Spin Nernst effect in a topological insulator Bi2Se3 | Jain, Rakshit; BOSE, ARNAB; Richardella, Anthony; Pillsbury, Timothy; Ou, Yongxi; Samarth, Nitin; Buhrman, Robert; Ralph, Daniel | We study bilayers made from thin films of the topological insulator Bi 2Se 3 with CoFeB, apply a thermal gradient using an adjacent heater, and measure voltage signals arising from spin currents via the inverse spin Hall effect. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1043 | Spin textures in a silver sulfide proustite | Koyama, Sean; Rondinelli, James | In this talk, I will present a first-principles electronic structure study of proustite, a polar Ag 3AsS 3 sulfide, and related A 3BQ 3 chalcogenides. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1044 | Observation a Chiral Electronic Continuum in the Giant Rashba Spin-Split System, BiTeI | Lee, Alexander; Peng, Bo; Du, Kai; Kung, Hsiang-Hsi; Monserrat, Bartomeu; Cheong, Sang-Wook; Blumberg, Girsh | In our study, we used polarization-resolved Raman scattering to probe the Rashba continuum. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1045 | First-principles study on Giant Hidden Rashba Effects in novel Two-Dimensional Si2Bi2 | Lee, Seungjun; Kwon, Young-Kyun | Here, through first-principles density functional theory and model Hamiltonian calculations, we investigate giant spin-layer locking observed in novel two-dimensional materials Si 2Bi 2. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1046 | Non-orthogonal spin-momentum locking in strongly spin-orbit coupled materials | Chiu, Wei-Chi; Hakioglu, Tugrul; Markiewicz, Robert; Singh, Bahadur; Bansil, Arun | [1] Here, we discuss the non-magnetic impurity scattering as a candidate mechanism to this isotropic NOSML state. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1047 | Nonequilibrium Noise Measurement of a spin current induced by the spin Seebeck effect | Zhao, Xuanhan; Chen, Liyang; Natelson, Douglas; Liu, Changjiang; Hong, Deshun; Bhattacharya, Anand | Nonequilibrium Noise Measurement of a spin current induced by the spin Seebeck effect | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1048 | Design principles for selecting interfaces between Rashba compound and a ferroelectric film that would reverse spin texture | Zhang, Xiaoli; Mera Acosta, Carlos; Zunger, Alex | We find the minimal design principles leading to R spin texture reversal through ferroelectric switching. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1049 | Inverse design of co-functionaity: Discovery of Rashba materials that are also topological insulators and Rashba materials that are also ferroelectrics | Mera Acosta, Carlos; Fazzio, Adalberto; Dalpian, Gustavo; Zunger, Alex | We demonstrate design of two types of cross fuctionalities involving co existence of the Rashba effect with “effect X”=either topology or ferroelectricity. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1050 | Magnetic Hamiltonian Engineering by Light-Matter Interaction | Lin, Zexun; Rodriguez-vega, Martin; Fiete, Gregory | In this work, we explore the flexibility and magnitude of Hamiltonian engineering by photon-phonon coupling. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1051 | Spin texture and Berry phase of heavy-mass holes confined in SiGe two-dimensional quantum well system under the coexistence of Rashba and Dresselhaus spin-orbit interactions | Tojo, Tatsuki; Takeda, Kyozaburo | We extend DKK’s k.p perturbation approach by take into account the R- and D-relating SOIs up to the 2nd-order terms crossing with k.p term, and computationally explore ST and BP. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1052 | Orbital Magnetoelectric effect in px-py Zigzag nanoribbon. | Cysne, Tarik; Canonico, Luis; Guimarães, Filipe; Muniz, Roberto; Rappoport, Tatiana | Motivated by the recent synthetization of the monolayer of bismuthene on SiC substrate, which can be effectively described by a simple two orbitals model with strong atomic spin-orbit coupling, we study the spin and orbital angular momentum response in px-py zigzag nanoribbon to an applied longitudinal electric field. | Session 83: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 1053 | Operating ferrimagnet as terahertz antiferromagnetic spin-torque oscillator | Zhang, Hantao; Guo, Mingda; Cheng, Ran | We find that anti-damping torques can trigger spontaneous oscillation of the exchange mode in FIMs, resembling the terahertz AFM spin dynamics. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1054 | Terahertz spin-to-charge conversion by interfacial skew scattering in magnetic metal bilayers | Gueckstock, Oliver; Nadvornik, Lukas; Gradhand, Martin; Seifert, Tom; Bierhance, Genaro; Wolf, Martin; Vafaee, Mehran; Cramer, Joel; Woltersdorf, Georg; Mertig, Ingrid; Jakob, Gerhard; Klaeui, Mathias; Kampfrath, Tobias | Here, we study ultrafast S2C at interfaces by terahertz (THz) emission spectroscopy [3-4] in a model system: F|N bilayers consisting of thin metal films of a ferromagnetic layer F and nonmagnetic layer N with strong and weak spin-orbit coupling (SOC). | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1055 | Terahertz spin dynamics in antiferromagnetic Mn2Au | Behovits, Yannic; Chekhov, Alexander; Bodnar, Stanislav; Jourdan, Martin; Klaeui, Mathias; Kampfrath, Tobias | Here, we employ a THz-pump optical-probe setup to investigate spin dynamics in Mn 2Au thin films in the small-perturbation regime. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1056 | Terahertz Magnon Polaritons in YFeO3 in Pulsed High Magnetic Fields | Baydin, Andrey; Hayashida, Kenji; Marquez Peraca, Nicolas; Makihara, Takuma; Tay, Fuyang; Li, Xinwei; Ma, Xiaoxuan; Jin, Zuanming; Ren, Wei; Ma, Guohong; Noe, Gary; Katayama, Ikufumi; Takeda, Jun; Nojiri, Hiroyuki; Turchinovich, Dmitry; Cao, Shixun; Bamba, Motoaki; Kono, Junichiro | We developed a microscopic theoretical model that explains the data without any fitting parameters. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1057 | Same driving force for laser-induced ultrafast demagnetization and THz spin transport | Rouzegar, Reza; Brandt, Liane; Nadvornik, Lukas; Chekhov, Alexander; Reiss, David; Gueckstock, Oliver; Wolf, Martin; Seifert, Tom; brouwer, Piet; Woltersdorf, Georg; Kampfrath, Tobias | We investigate the driving force of two phenomena that follow femtosecond laser excitation: ultrafast magnetization quenching and spin transport. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1058 | Ultrafast demagnetization of ferromagnetic iron following optical vs terahertz excitation | Chekhov, Alexander; Behovits, Yannic; Heitz, Julius; Denker, Christian; Reiß, David; Wolf, Martin; Weinelt, Martin; brouwer, Piet; Muenzenberg, Markus; Kampfrath, Tobias | To tackle this issue, we perform a direct comparison of magnetization dynamics of an iron thin film triggered by an ultrashort optical pump pulse (photon energy 3 eV, strongly nonthermal perturbation) and a terahertz pump pulse (4 meV, quasi-thermal perturbation) [2]. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1059 | Ultrafast demagnetization times in ferromagnetic alloys | Zhang, Guoping; Bai, Yihua; George, Thomas | In this presentation, we take L10-FeNi as an example and employ the time-dependent Liouville density-matrix functional theory to compute laser-induced ultrafast demagnetization. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1060 | Effect of demagnetization factors on spin current transport | WU, PO-HSUN; Chan, Ying-Ting; Hung, Tzu-Chao; Zhang, Yi-Hui; Qu, Danru; Chuang, Tien-Ming; Chien, C. L.; Huang, Ssu Yen | In this work [1], we demonstrated the strong influence of the demagnetizing field on the spin current transports, including the spin Seebeck effect, spin Hall magnetoresistance, and planar Hall resistance, in Pt/YIG. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1061 | Terahertz photoconductivity and photocarrier dynamics in graphene–mesoporous silicon nanocomposites | Jubgang Fandio, Defi Junior | We investigate the photocarrier and charge transport dynamics in graphene-mesoporous silicon nanocomposites using optical pump-terahertz probe technique. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1062 | Spin-current across the metamagnetic transition in FeRh films as measured with THz emission spectroscopy | Lv, Yinchuan; Saglam, Hilal; shim, Soho; Gibbons, Jonathan; Hoffmann, Axel; Mason, Nadya; Mahmood, Fahad | Here we perform THz emission spectroscopy on thin films of FeRh, which is well known to undergo an antiferromagnetic to ferromagnetic phase transition around room temperature. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1063 | Terahertz Emission from Inverse Spin Hall Effect in β-W | Romero, Ralph; Budhani, Ramesh; Armitage, Norman | Here we demonstrate THz emission from a magnetic/heavy metal bilayer of CoFe/β-W deposited on a magnetic spinel MgAl 2O 4 substrate. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1064 | Electrically detected spin currents generated by sub-terahertz microwaves | Shi, Jing; Li, Junxue; Wilson, C; Lohmann, Mark; Cheng, Ran; Kavand, Marzieh; Yuan, Wei; Aldosary, Mohammed; Agladze, Nikolay; Wei, Peng | At the AFM resonance, we observed a sign change in the ISHE voltage at ~45 K as the temperature is varied. | Session 84: Terahertz Spintronics and Demagnetization Dynamics |
| 1065 | Theoretical prediction and discovery of antiferromagnetic topological insulators | Otrokov, Mikhail | The discovery of the first AFMTI MnBi 2Te 4 opens a new field that focuses on intrinsically magnetic stoichiometric compounds: several MnBi 2Te 4-derived MTIs were synthesized right away [5], that will be discussed in the talk along with other AFMTI candidates predicted. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1066 | Exploration of topological states in magnetic topological insulator MnBi2Te4 and transition metal dichalcogenide superconductor WS2 | Li, Wei | Based on our results, we propose a novel layered surface structure of MnBi 2Te 4, which can explain the current controversies in experimental results. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1067 | Interplay of magnetism, superconductivity, and topology in the rare-earth diantimonides | Bannies, Jörn; Oudah, Mohamed; Bonn, Douglas; Burke, Sarah; Aronson, Meigan | Here, we analyze the interplay between these features in different members of this material class. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1068 | Defect Genome of 2d Topological Insulators for High Temperature Quantum Anomalous Hall Effect | Pham, Anh; Ganesh, Panchapakesan | We apply the linear-response method [6] to obtain the self-consistent Hubbard ‘U’ to predict the topology and gaps. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1069 | Modeling topological edge magnetoplasmons in a quantum anomalous Hall insulator | Wang, Taige; Cauchon, Alex; Alfaro, Julien; Allen, Monica | In this work, we develop a theoretical framework that models the microwave response of quantum anomalous Hall (QAH) insulators using a full conductivity tensor description. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1070 | Transport Properties of Fe-doped type-II Weyl semimetal WTe2 | Basnet, Rabindra; Pandey, Krishna; Acharya, Gokul; Nabi, Md Rafique Un; Wegner, Aaron; Hu, Jin | Here, we report the tuning of electronic properties of type-II Weyl semimetal WTe 2 by Fe doping. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1071 | Material and Spin Transport Characterization in Gd-alloyed Bismuth Selenide | Sahu, Protyush; Peterson, Thomas; Fan, Yihong; Chen, Junyang; Devaux, Xavier; Jaffres, Henri; Migot, Sylvie; Dang, Huong; George, Jean-Marie; LU, Yuan; Wang, Jianping | We developed a homogenous amorphous material, Gd (40%)-alloyed Bi xSe 1-x (60%), which shows a resistivity of 60 mOhm.cm. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1072 | Topological Properties of SnSe/EuS and SnTe/CaTe Interfaces | Yang, Shuyang; Wu, Chunzhi; Marom, Noa | We consider both interface slab models with a vacuum region and periodic heterostructures without vacuum. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1073 | Extremely linear magnetoresistance in strained WTe2 | Tran, Jason; Li, Junxue; Aytan, Ece; Shtengel, Kirill; Balandin, Alexander; Shi, Jing; Wei, Peng | In this talk, we present our studies of strained T d-WTe 2 grown by molecular beam epitaxy (MBE). | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1074 | Six-fold degenerate fermions in PdSb2 | Chapai, Ramakanta; Graf, David; Jin, Rongying | By measuring the magnetic field ( H) dependence of the magnetic torque τ( H) in single crystalline PdSb 2, we observe the de Haas-van Alphen (dHvA) oscillations. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1075 | Tuning the symmetry and electronic and topological properties of two-dimensional transition metal dichalcogenides by alloying | Luo, Wei; Geohegan, David; Yoon, Mina | Using first principles calculations in combination with combined with evolutionary algorithms, we identify stable and metastable configurations of a two-dimensional alloy of WS 2xTe 2(1-x) with high thermodynamic stability. | Session 85: Topological Materials: Magnetic and Quantum Effects |
| 1076 | Large magneto-optical effects in the topological chiral antiferromagnet Mn3Sn | Higo, Tomoya; Man, Huiyuan; Gopman, Daniel; Wu, Liang; Koretsune, Takashi; Van T Erve, Olaf; Kabanov, Yury; Rees, Dylan; Li, Yufan; Suzuki, Michi-To; Patankar, Shreyas; Ikhlas, Muhammad; Chien, Chia-Ling; Arita, Ryotaro; Shull, Robert; Orenstein, Joseph; Nakatsuji, Satoru | In this presentation, we will mainly talk about the magneto-optical properties of Mn 3Sn [5]. | Session 86: Topological Spintronics using Chiral Antiferromagnets |
| 1077 | New aspects of magnetoelectric responses in chiral antiferromagnets | Chen, Hua | I will discuss several recent theoretical and experimental developments that counter this conventional wisdom, in a class of antiferromagnets that have stable noncollinear magnetic order. | Session 86: Topological Spintronics using Chiral Antiferromagnets |
| 1078 | Physics of domains and domain walls in topological magnets | Balents, Leon | We will discuss the energetics and dynamics of domains and the boundaries between them in two examples of topological magnets: antiferromagnetic Weyl metals, as exemplified by Mn3Sn, and quantum anomalous Hall states as is observed in twisted bilayer graphene. | Session 86: Topological Spintronics using Chiral Antiferromagnets |
| 1079 | Anti-chiral spin order, its soft modes, and their hybridization with phonons in the topological semimetal Mn3Ge. | Gaudet, Jonathan; Chen, Youzhe; Dasgupta, Sayak; Marcus, Guy; Lin, Jiao; Chen, Taishi; Tomita, Takahiro; Ikhlas, Muhammad; Zhao, Yang; Chen, Wangchun; Stone, Matthew; Tchernyshyov, Oleg; Nakatsuji, Satoru; Broholm, Collin | We report the magnetic structure and spin excitations of Mn 3Ge, a breathing kagome antiferromagnet with transport anomalies attributed to Weyl nodes. | Session 86: Topological Spintronics using Chiral Antiferromagnets |
| 1080 | The Functionality of a Topological Chiral Antiferromagnet Mn3X (X=Sn, Ge) | Otani, Yoshichika | In the first half of this talk, we will introduce our recent experimental results on the magnetic spin Hall effects (MSHE), particularly angular dependent spin densities appearing on the surface of a focused ion beam fabricated Mn 3Sn epitaxial thin slab. | Session 86: Topological Spintronics using Chiral Antiferromagnets |
| 1081 | Square skyrmion, meron and vortex crystals in centrosymmetric tetragonal magnets | Wang, Zhentao | Here, we present a new guiding principle for finding square skyrmion, meron and vortex crystals (double-Q ordering) in centrosymmetric tetragonal magnets even in the absence of magnetic field. | Session 87: Topological Textures in Itinerant Magnets |
| 1082 | Imaging the coupling between itinerant electrons and localised moments in the centrosymmetric skyrmion magnet GdRu2Si2 | Yasui, Yuuki; Butler, Christopher; Khanh, Nguyen; Hayami, Satoru; Nomoto, Takuya; Hanaguri, Tetsuo; Motome, Yukitoshi; Arita, Ryotaro; Arima, Taka-hisa; Tokura, Yoshinori; Seki, Shinichiro | We performed spectroscopic-imaging scanning tunneling microscopy experiments on GdRu 2Si 2 to investigate the nature of the coupling between itinerant electrons and localized magnetic moments. | Session 87: Topological Textures in Itinerant Magnets |
| 1083 | Formation mechanism of helical Q structure in Gd-based skyrmion materials | Nomoto, Takuya; Koretsune, Takashi; Arita, Ryotaro | Using the ab initio local force method, we investigate the formation mechanism of the helical spin structure in GdRu 2Si 2 and Gd 2PdSi 3[4]. | Session 87: Topological Textures in Itinerant Magnets |
| 1084 | Chiral electric transport signatures in magnetic skyrmions and chiral helimagnets | Lux, Fabian; Prass, Pascal; Freimuth, Frank; Bluegel, Stefan; Mokrousov, Yuriy | In this talk, we present the geometrical foundation of this effect and theoretically uncover its manifestations in a two-dimensional Rashba electron gas. | Session 87: Topological Textures in Itinerant Magnets |
| 1085 | Construction of low energy effective Hamiltonians using supervised machine learning. | Sharma, Vikram; Wang, Zhentao; Batista, Cristian | We propose a simple supervised machine learning (ML) algorithm to find the low energy spin Hamiltonian for a given labeled energy data-set from a “high energy” s-d model. | Session 87: Topological Textures in Itinerant Magnets |
| 1086 | Decoding of complex magnetic structures from Hall-effect measurements | Bouaziz, Juba; Ishida, Hiroshi; Lounis, Samir; Bluegel, Stefan | We introduce a missing contribution, the non-collinear Hall effect (NHE). | Session 87: Topological Textures in Itinerant Magnets |
| 1087 | Nonlinear optical responses in chiral magnetic metals | Okumura, Shun; Morimoto, Takahiro; Kato, Yasuyuki; Motome, Yukitoshi | We theoretically study such nonlinear optical responses in a chiral conical magnetic state as a prototypical example. | Session 87: Topological Textures in Itinerant Magnets |
| 1088 | Defect-implantation for the all-electrical detection of non-collinear spin-textures | Lima Fernandes, Imara; Bouhassoune, Mohammed; Lounis, Samir | We demonstrate that atomic defects enable highly efficient all-electrical detection of spin-swirling textures [1], in particular magnetic skyrmions, which are promising bit candidates in future spintronics devices. | Session 87: Topological Textures in Itinerant Magnets |
| 1089 | Incommensurate magnetic ordering in CrB2 | Deák, András; Jackson, Jerome; Nyári, Bendegúz; Szunyogh, László | We investigate magnetic ordering in the non-collinear antiferromagnet CrB 2. | Session 87: Topological Textures in Itinerant Magnets |
| 1090 | Skyrmion size dependence of the topological Hall effect: A real-space calculation | Matsui, Akira; Nomoto, Takuya; Arita, Ryotaro | In this study, we numerically investigate THE in systems with various skyrmion sizes. | Session 87: Topological Textures in Itinerant Magnets |
| 1091 | Magnetic Fields in the Topological Hall Effect | Skomski, Ralph; Ullah, Ahsan; Pahari, Rabindra; Balasubramanian, Balamurugan; Sellmyer, David | We show that this variation leads to a generally very large effect that looks like a THE signal but is unrelated to the nanoscale Berry phase. | Session 87: Topological Textures in Itinerant Magnets |
| 1092 | Towards skyrmionic spin textures combined with SrTiO3 two-dimensional electron gases | Moreno, Luis; Mallik, Srijani; Marcano, Lourdes; Bouzehouane, Karim; Valencia, Sergio; Reyren, Nicolas; Barthélémy, Agnès; Bibes, Manuel | In this presentation we will show that the metal oxide (e.g. AlOx) thus formed can be combined with ferromagnetic and heavy-metal-based ultrathin films to generate various types of magnetization configurations with in-plane or out-of-plane anisotropy, depending on their thicknesses. | Session 87: Topological Textures in Itinerant Magnets |
| 1093 | Strain Induced Modulation of Dzyaloshinskii-Moriya interaction in Pt/Co Bilayer Devices: A Green’s Function Approach. | Mahfouzi, Farzad; Kioussis, Nicholas | We introduce a Greens function approach to calculate the DMI coefficients that compared to the super-cell and Generalized Bloch approaches is computationally more efficient and accurate. | Session 87: Topological Textures in Itinerant Magnets |
| 1094 | Anisotropic-exchange magnets: triangular and other cases | Chernyshev, Alexander | I will describe our efforts to understand the phase diagram of a model that combines paradigmatic geometrical frustration of spins on a triangular lattice with strong spin-orbit-induced interactions. | Session 88: Triangular Systems |
| 1095 | Constraining the parameter space of triangular lattice compound YbZnGaO4 | Steinhardt, William; Dissanayake, Sachith; Maksimov, Pavel; Shi, Zhenzhong; Baral, Raju; Butch, Nicholas; Graf, David; Podlesnyak, Andrey; Liu, Yaohua; Neuefeind, Joerg; Zhao, Yang; Xu, Guangyong; Lynn, Jeffrey; Marjerrison, Casey; Frandsen, Benjamin; Chernyshev, Alexander; Haravifard, Sara | In this talk we discuss further advances in determining the parameter space of YbZnGaO4, using a wide range of experimental techniques and comparisons to theory. | Session 88: Triangular Systems |
| 1096 | Neutron scattering investigation of proposed Kosterlitz-Thouless transitions in the triangular-lattice Ising antiferromagnet TmMgGaO4 | Dun, Zhiling; Daum, Marcus; Baral, Raju; Fischer, Henry; Cao, Huibo; Liu, Yaohua; Stone, Matthew; Rodriguez-Rivera, Jose; Choi, Eun Sang; Huang, Qing; Zhou, Haidong; Mourigal, Martin; Frandsen, Benjamin | Around 4 K, magnetic pair distribution function analysis provides evidence for the vortex anti-vortex pairs that characterize the proposed Kosterlitz-Thouless phase. | Session 88: Triangular Systems |
| 1097 | The investigation of frustrated magnetism in the triangular lattice ARESe2 single crystals | Xing, Jie; Sanjeewa, Liurukara; Taddei, Keith; Fishman, Randy; Daum, Marcus; Mourigal, Martin; Kim, Jungsoo; Stewart, Gregory; Du, Mao-Hua; Reboredo, Fernando; Dela Cruz, Clarina; Parker, David; Sales, Brian; Sefat, Athena | The investigation of frustrated magnetism in the triangular lattice ARESe2 single crystals | Session 88: Triangular Systems |
| 1098 | Crystal Growth and Characterization of Tb-Based Triangular Lattice Borate | Ennis, Matthew; Bag, Rabindranath; Dissanayake, Sachith; Shi, Zhenzhong; Kolesnikov, Alexander; Butch, Nicholas; Xu, Guangyong; Brown, Craig; Haravifard, Sara | In this talk, we will present the latest results of our experimental efforts obtained for Tb-based triangular lattice compound, Ba3Tb(BO3)3. | Session 88: Triangular Systems |
| 1099 | Avoided quasiparticle decay and highly-structured excitation continuum in the spin-1/2 near-Heisenberg triangular antiferromagnet Ba3CoSb2O9 | Macdougal, David; Williams, Stephanie; Prabhakaran, Dharmalingam; Bewley, Robert; Voneshen, David; Coldea, Radu | We report single-crystal time-of-flight inelastic neutron scattering measurements of the magnetic excitations in the pseudospin-1/2 triangular-lattice near-Heisenberg antiferromagnet Ba 3CoSb 2O 9. | Session 88: Triangular Systems |
| 1100 | Evolution of magnetic-field-induced magnetic ordering in the layered structure quantum Heisenberg triangular-lattice antiferromagnet Ba3CoSb2O9 | Fortune, Nathanael; Huang, Qing; Hong, Tao; Takano, Yasumasa; Hannahs, Scott; Choi, Eun Sang; Ma, Jie; Zhao, Zhiying; Li, N.; Zhou, Haidong | We have used specific heat, neutron diffraction, thermal conductivity, and magnetic torque measurements to map out the phase diagram of this system as a function of magnetic field intensity and orientation relative to the crystallographic ab plane. | Session 88: Triangular Systems |
| 1101 | Observation of high order multi-magnon (n = 4 and 6) bound states in the frustrated triangular antiferromagnetic lattice FeI2 | Legros, Anaelle; Zhang, Shang-Shun; Bai, Xiaojian; Zhang, Hao; Batista, Cristian; Mourigal, Martin; Armitage, Peter | Here we study the frustrated spin-1 triangular antiferromagnetic lattice FeI 2 [2] using time-domain terahertz spectroscopy. | Session 88: Triangular Systems |
| 1102 | Effects of dislocations in triangular antiferromagnet NiGa2S4 | Wang, Haoyu; Tchernyshyov, Oleg | We propose a different scenario based on a simple observation: the geometrical frustration of NiGa2S4 can be relieved by a lattice distortion similar to the case of the pyrochlore antiferromagnet [3]. | Session 88: Triangular Systems |
| 1103 | Magnetic excitations affected by spin-lattice coupling in the S=3/2 triangular lattice antiferromagnet Ag2CrO2 | Matsuda, Masaaki; Dissanayake, Sachith; Yoshida, Hiroyuki; Isobe, Masaaki; Stone, Matthew | The magnetic excitations below T N were reproduced reasonably well using a linear spin-wave model with further-neighbor interactions and easy-axis anisotropy, which are predicted to be due to a previously proposed spin-lattice coupling [2]. | Session 88: Triangular Systems |
| 1104 | Muon investigations of magnetsm in the frustrated material LiYbO2. | Kenney, Eric; Bordelon, Mitchell; Posthuma, Lorenzo; Wilson, Stephen; Graf, Michael | We performed µSR measurements and show that near 1 Kelvin the system transitions from a non-magnetic state to a strongly magnetic disordered state consistent with the unusual incommensurate order suggested by neutron diffraction. | Session 88: Triangular Systems |
| 1105 | Crystal Growth and Characterization of Yb – Based Triangular Lattice Borate | Bag, Rabindranath; Ennis, Matthew; Dissanayake, Sachith; Shi, Zhenzhong; Kolesnikov, Alexander; Rodriguez-Rivera, Jose; Wu, Hui; Brown, Craig; Haravifard, Sara | In this talk, I will share our latest experimental results. | Session 88: Triangular Systems |
| 1106 | High-field resonant torsion magnetometry as a probe of CEF Interactions and exchange in frustrated triangular lattice CsYbSe2 | Pocs, Christopher; Xing, Jie; Sefat, Athena; Lee, Minhyea | Our analysis of the high-field magnetotropic response of CsYbSe 2, across a wide range of temperatures, provides an unambiguous determination of the crystal-electric-field parameters as well as leading order exchange interactions in CsYbSe 2. | Session 88: Triangular Systems |