Highlights of Magnetism (GMAG) Talks @ APS 2020 March Meeting
American Physics Society (APS) March meeting is one of the largest physics meetings in the world. In 2020, the meeting was canceled due to concerns over the rapid spread of 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 | Discovery of Intrinsic Two-dimensional Ferromagnetism in CrTe2 Thin films | Zhang, Xiaoqian; Cook, Jacob; Lu, Qiangsheng; Bian, Guang | In this work, we report robust 2D ferromagnetism in chromium ditelluride (CrTe 2) nanofilms whose electronic structure and magnetic properties are clearly resolved by angle-resolved photoemission spectroscopy (ARPES), superconducting quantum interference device (SQUID) and X-ray magnetic circular dichroism (XMCD). | Session 1: 2D Magnetic Materials |
| 2 | Magnetic field- and temperature-dependent resonant Raman spectroscopy of bulk CrI3 | Li, Siwen; Ye, Zhipeng; Luo, Xiangpeng; Ye, Gaihua; Tian, Shangjie; Lei, Hechang; Sun, Kai; He, Rui; Zhao, Liuyan | In this talk, we will present our results on temperature- and magnetic field-dependent resonant Raman spectroscopy studies on bulk CrI 3. | Session 1: 2D Magnetic Materials |
| 3 | Electric-Field Control of 2D Magnetism in Bilayer VI3 | Nguyen, Thi Phuong Thao; Yamauchi, Kunihiko; Oguchi, Tamio | In this presentation, we will present our first-priciple study on the magnetic properties in bilayer VI 3 and the influence of applied electric-fields on the magnetism. | Session 1: 2D Magnetic Materials |
| 4 | Light-controlled magnetism in vanadium-doped tungsten disulfide monolayers | Ortiz Jimenez, Valery; Pham, Yen; Kalappattil, Vijaysankar; Zhang, Fu; Terrones, Mauricio; Phan, Manh-Huong | In this work, we show light-mediated magnetism in V-WS 2 at RT. | Session 1: 2D Magnetic Materials |
| 5 | Strain Tuning of Magnetic Order in Two-dimensional Magnets | Jiang, Shengwei; Xie, Hongchao; Weber, Daniel; Goldberger, Joshua; Shan, Jie; Mak, Kin Fai | Here we demonstrate that the magnetic order in 2D CrI 3 can also be effectively tuned by applying in-plane strain. | Session 1: 2D Magnetic Materials |
| 6 | Tuning Magnetism of Monolayer Tungsten Disulfide by Transition Metal Doping | Pham, Yen; Ortiz Jimenez, Valery; Kalappattil, Vijaysankar; Zhang, Fu; Terrones, Mauricio; Phan, Manh-Huong | Theoretical investigations of 2D transition metal dichalcogenides (TMDs) have predicted promising perspectives for inducing intrinsic FM in 2D TMD semiconductors by transition metal doping. | Session 1: 2D Magnetic Materials |
| 7 | Magnetic Correlations in the Quasi-2D Semiconducting Ferromagnet CrGeTe3 | Williams, Travis; Aczel, Adam; Ortiz, Brenden; Sarte, Paul; Wilson, Stephen | In this study, we use neutron scattering to measure the static and dynamic magnetic properties. | Session 1: 2D Magnetic Materials |
| 8 | First-principles theory of proximity spin-orbit torque on a two-dimensional magnet: Current-driven antiferromagnet-to-ferromagnet reversible transition in bilayer CrI3 | Dolui, Kapildeb; Petrovic, Marko; Zollner, Klaus; Plechac, Petr; Fabian, Jaroslav; Nikolic, Branislav | Using first-principles quantum transport approach, we predict that injecting unpolarized charge current parallel to the interface of bilayer-CrI 3/monolayer-TaSe 2 van der Waals heterostructure will induce spin-orbit torque (SOT) and thereby driven dynamics of magnetization on the first monolayer of CrI 3 in direct contact with TaSe 2. | Session 1: 2D Magnetic Materials |
| 9 | Large anomalous Nernst effect in a van der Waals ferromagnet Fe3GeTe2 | Xu, Jinsong; Phelan, William; Chien, Chia-Ling | Here, we report the observation of large anomalous Nernst effect in Fe 3GeTe 2. | Session 1: 2D Magnetic Materials |
| 10 | Unconventional magnetic behavior in two-dimensional layered CrTe2 films | CHI, HANG; Ou, Yunbo; Heiman, Don; Moodera, Jagadeesh | Here, we explore the behavior of a new van der Waals (vdW) TMD, CrTe 2 epitaxial films with apparent C 6 in-plane symmetry. | Session 1: 2D Magnetic Materials |
| 11 | Ultimate tunability of ferromagnetic anisotropy in chromium mixed halides | Tafti, Fazel; Tartaglia, Thomas; Bahrami, Faranak; Tang, Joseph | We present a phase diagram of all compositions of mixed halides and demonstrate how the critical temperature, Weiss constant, and magnetic anisotropy are continuously tuned across the series. | Session 1: 2D Magnetic Materials |
| 12 | Spin-dependent scattering in 2D van der Waals ferromagnet Fe0.29TaS2 and its heterostructure | Cai, Ranran; lv, peng; Xing, Wenyu; Yao, Yunyan; Ma, Yang; Zhou, Huibin; Li, Boning; Chen, Yangyang; Jia, Shuang; Zutic, Igor; Xie, Xincheng; Sun, Qing-Feng; Han, Wei | In this talk, we will present the spin-scattering mechanisms in quasi-2D van der Waals ferromagnet. | Session 1: 2D Magnetic Materials |
| 13 | Stacking Dependence of the Chern Number in a Ferromagnetic Topological Magnon Insulator Heterostructure | Hofer, Stephen; Datta, Trinanjan; Mazumdar, Dipanjan | In this work we focus on the topological magnetic features of these materials as they might be grown in the few-layer regime. | Session 1: 2D Magnetic Materials |
| 14 | Quantum critical point and ferromagnetic semiconducting behavior in p-type FeAs2 | Lei, Bing-Hua; Fu, Yuhao; Feng, Zhenzhen; Singh, David | We show that p-type FeAs 2 is an example. | Session 1: 2D Magnetic Materials |
| 15 | Temperature Dependence of the Anomalous Hall Effect from Electron Interactions | Li, Songci; Levchenko, Alex | We consider the impact of electron-electron interactions on the temperature dependence of the anomalous Hall effect in disordered conductors. | Session 1: 2D Magnetic Materials |
| 16 | Distinct magneto-Raman signatures of spin-flip phase transitions in CrI3 | McCreary, Amber; Mai, Thuc; Utermohlen, Franz; Simpson, Jeffrey; Garrity, Kevin; Feng, Xiaozhou; Shcherbakov, Dmitry; Zhu, Yanglin; Hu, Jin; Weber, Daniel; Watanabe, Kenji; Taniguchi, Takashi; Goldberger, Joshua; Mao, Zhiqiang; Lau, Chun Ning; Lu, Yuanming; Trivedi, Nandini; Valdes Aguilar, Rolando; Hight Walker, Angela | We observe a striking evolution of the Raman spectra with increasing magnetic field in which clear, sudden changes in intensities of the modes are attributed to the interlayer ordering changing from antiferromagnetic to ferromagnetic at a critical magnetic field. | Session 1: 2D Magnetic Materials |
| 17 | Probing Tunneling Magnetoresistances in Chromium Trihalide Junctions via First Principles Calculations | Heath, Jonathan; Kuroda, Marcelo | Here we characterize physical properties of multilayer chromium trihalide/graphene junctions using density functional theory (DFT) and Landauer’s formalism for ballistic transport. | Session 1: 2D Magnetic Materials |
| 18 | Optically probing low energy magnetic excitations in bilayer CrI3 | Xie, Hongchao; Ye, Zhipeng; Tian, Shangjie; Lei, Hechang; He, Rui; Zhao, Liuyan | Study of spin waves, collective magnetic excitations, in two-dimensional (2D) magnets emerges as one key yet new topic in the research of 2D magnetism. | Session 1: 2D Magnetic Materials |
| 19 | Current Control of Magnetism in Two-Dimensional Fe3GeTe2 | Brataas, Arne | We investigate how a current can control the ferromagnetic properties of such materials. | Session 1: 2D Magnetic Materials |
| 20 | Enhanced magnetoresistance in mixed van der Waals magnetic tunnel junctions | Klein, Dahlia; MacNeill, David; Tschudin, Märta; Watanabe, Kenji; Taniguchi, Takashi; Jarillo-Herrero, Pablo | Studies have demonstrated large tunneling magnetoresistances in van der Waals magnetic tunnel junctions fabricated from the insulating layered chromium trihalides (CrX 3) due to the spin filter effect. | Session 1: 2D Magnetic Materials |
| 21 | Hall micromagnetometry of two-dimensional ferromagnets | Kim, Minsoo; Kumaravadivel, Piranavan; Birkbeck, John; Kuang, Wenjun; Xu, Shuigang; Hopkinson, David; Knolle, Johannes; McClarty, Paul; Berdyugin, Alexey; Ben Shalom, Moshe; Gorbatchev, Roman; Haigh, Sarah; Liu, Song; Edgar, James; Novoselov, Konstantin; Grigorieva, Irina; Geim, Andre | Here we show that ballistic Hall micromagnetometry provides a reliable and convenient way to measure magnetization of individual two-dimensional ferromagnets. | Session 1: 2D Magnetic Materials |
| 22 | The quantum non-Heisenberg nature of two-dimensional CrI3 magnets | Santos, Elton; Wahab, Dina; Augustin, Mathias; Mañas-Valero, Samuel; Kuang, Wenjun; Jenkins, Sarah; Coronado, Eugenio; Grigorieva, Irina; Vera Marun, Ivan; Navarro-Moratalla, Efren; Evans, Richard; Novoselov, Kostya | We find that biquadratic exchange interactions are essential to quantitatively describe the magnetism of CrI 3 but requiring quantum scaling corrections to reproduce its thermal properties. | Session 1: 2D Magnetic Materials |
| 23 | Substrate-assisted asymmetric electronic gap in artificial magnetic honeycomb lattice | Guo, Jiasen; Chen, Yiyao; Yumnam, George; Cunningham, Quinn; Singh, Deepak | Substrate-assisted asymmetric electronic gap in artificial magnetic honeycomb lattice | Session 1: 2D Magnetic Materials |
| 24 | Magneto-Raman study of the Neel-type Antiferromagnet MnPSe3 | Mai, Thuc; Argo, Joshua; McCreary, Amber; Valdes Aguilar, Rolando; Doan-Nguyen, Vicky; Hight Walker, Angela | We perform a systematic magneto-Raman study of MnPSe 3. | Session 1: 2D Magnetic Materials |
| 25 | Magnetic structure determination of transition metal dichalcogenide Fe1/3NbS2 | Wu, Shan; Xu, Zhijun; Maniv, Eran; Acharya, Arani; Doyle, Spencer; John, Caolan; Analytis, James; Birgeneau, Robert | From neutron diffraction experiment,we determined a stripe-type order that develops into three magnetic domains, which is strongly coupled to three nematic domains. | Session 1: 2D Magnetic Materials |
| 26 | Magnetic interactions and excitations in magnetic 2D van der Waals materials | Ke, Liqin | Using linear-response ab initio methods, we investigate the magnetic interactions and spin excitations in various m2DvdW systems. | Session 1: 2D Magnetic Materials |
| 27 | Is 2H-MoTe2 an intrinsically magnetic semiconductor? | Krieger, Jonas; Guguchia, Zurab; Shiroka, Toni; Prokscha, Thomas; Suter, Andreas; Strokov, Vladimir; Salman, Zaher | Here we present results of complementary spectroscopic techniques to elucidate the nature and origin of the reported magnetic order. | Session 1: 2D Magnetic Materials |
| 28 | Patterning-induced ferromagnetism of Fe3GeTe2 van der Waals materials beyond room temperature | Yang, Mengmeng; Li, Qian; Gong, Cheng; Chopdekar, Rajesh; N’Diaye, Alpha; Turner, John; Chen, Gong; Scholl, Andreas; Shafer, Padraic; Arenholz, Elke; Schmid, Andreas; Wang, Sheng; Liu, Kai; Gao, Nan; Admasu, Alemayehu; Cheong, Sang-Wook; Hwang, Chanyong; Li, Jia; Wang, Feng; Zhang, Xiang; Qiu, Zi Q. | Here we report a real space imaging study of itinerant ferromagnet Fe 3GeTe 2 and the enhancement of its Curie temperature well above ambient temperature. | Session 1: 2D Magnetic Materials |
| 29 | Frustrated Magnetism in Mott Insulating V2O3 | Jeschke, Harald | Using a combination of density functional theory calculations and inelastic neutron scattering experiments, we study the magnetic interactions in the chromium-stabilized antiferromagnetic and paramagnetic insulating phases as function of temperature [1]. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 30 | Magnetic Field Induced Phase Transition in Spinel GeNi2O4 | Basu, Tathamay; Zou, Tao; Dun, Z; Dela Cruz, Clarina; Hong, Tao; Cao, Huibo; Zhu, Mengze; Zhou, Haidong; Ke, Xianglin | We will discuss the potential mechanisms regarding such a peculiar magnetic anisotropy in this cubic system. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 31 | Characterization of the crystal field scheme of a new family of geometrically frustrated rare earth spinels. | Reig-i-Plessis, Dalmau; MacDougall, Greg; Aczel, Adam; Cote, Alexandra; van Geldern, Sean | Here we present on a new family of compounds MgRE 2Se 4 (RE = Ho, Tm, Er, and Yb), which form in the spinel structure, were the rare earth atoms are a pyrochlore sublattice. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 32 | Update on the Magnetic and Structural Properties of the Solid Solutions CuAl2(1-x)Ga2xO4 | Bullard, Thomas; Susner, Michael; Taddei, Keith; Brant, Jacilynn; Haugan, Timothy | In this research we examine the solid solution between these two end members, CuAl 2(1-x)Ga 2xO 4. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 33 | Mean field theory for cooperative magnetism in non-Kramers garnets | Tomasello, Bruno; Wawrzynczak, Rafal; Nilsen, Göran; Fennell, Tom; Ziman, Tim | This talk presents our current theoretical understanding of the non-Kramers garnet Tb 3Ga 5O 12, benefitting from state of the art neutron scattering experiments for the crystal-field and magnetic structure – PRB, 100,094442(2019). | Session 2: 3D Frustrated Magnets: Other Geometries |
| 34 | Absence of long-range magnetic ordering in the S=1/2 frustrated system Ca3Cu2GeV2O12 | Wiebe, Christopher; Lussier, Joey; Richtik, Brooke; Mauws, Cole; Lynn, Jeffrey | Using both neutron and X-ray diffraction along with heat capacity and magnetometry, the work presented here shows that Ca 3Cu 2GeV 2O 12 has potential as a new spin liquid candidate. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 35 | Magnetic order and single-ion anisotropy in Tb3Ga5O12 rare-earth garnet. | Wawrzynczak, Rafal; Tomasello, Bruno; Manuel, Pascal; Khalyavin, Dmitry; Le, Duc; Guidi, Tatiana; Cervellino, Antonio; Ziman, Tim; Boehm, Martin; Nilsen, Göran; Fennell, Tom | Magnetic order and single-ion anisotropy in Tb3Ga5O12 rare-earth garnet. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 36 | Field dependence of magnetic order in frustrated diamond-like antiferromagnet LiYbO2 | Bordelon, Mitchell; Posthuma, Lorenzo; Kenney, Eric; Butch, Nicholas; Brown, Craig; Banerjee, Arnab; Graf, Michael; Wilson, Stephen | Here we propose a new materials system where spiral spin liquids may potentially be observed based upon a tetragonally-elongated diamond lattice. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 37 | Terahertz spectroscopy on breathing pyrochlore LiGaCr4S8 | Li, YUFEI; Jasper, Evan; Pokharel, Ganesh; Christianson, Andrew; Mandrus, David; Valdes Aguilar, Rolando | We performed THz transmission spectroscopy measurements in this temperature range on a polycrystal sample. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 38 | Single Crystal Growth and Magnetic-Thermal Characterization of a Rare-Earth Based Breathing Pyrochlore Family | Bag, Rabindranath; Yadav, Lalit; Shi, Zhenzhong; Dissanayake, Sachith; Graf, David; Choi, Eun; Lang, Franz; Mejia, Catalina; Green, Elizabeth; Blundell, Stephen; Haravifard, Sara | In this talk I will present the results of our single crystal growth and characterization efforts. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 39 | Field Dependent Neutron Scattering Studies of Breathing Pyrochlore Ba3Yb2Zn5O11 | Dissanayake, Sachith; Steinhardt, William; Shi, Zhenzhong; Kuhn, Stephen; Rau, Jeffrey; Butch, Nicholas; Frontzek, Matthias; Podlesnyak, Andrey; Qiu, Yiming; Chen, Wangchun; Graf, David; Hong, Tao; Marjerrison, Casey; Gingras, Michel J; Haravifard, Sara | In this talk we will present single-crystal field-dependent unpolarized and polarized inelastic neutron scattering measurements on Yb-based breathing pyrochlore system, as well as a theoretical model that can effectively describe some of our experimental findings. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 40 | Neutron Scattering Studies of Rare-Earth Based Breathing Pyrochlore System. | Yadav, Lalit; Bag, Rabindranath; Dissanayake, Sachith; Shi, Zhenzhong; Xu, Guangyong; Wu, Hui; Brown, Craig; Butch, Nicholas; Lang, Franz; Blundell, Stephen; Haravifard, Sara | In this talk, we are going to present our latest experimental results. | Session 2: 3D Frustrated Magnets: Other Geometries |
| 41 | Non-magnetic Origin of Spin Hall Magnetoresistance in Pt films and Epitaxial NiO/Pt bilayers | Churikova, Alexandra; Bono, David; Neltner, Brian; Scipioni, Larry; Shepard, Adam; Wittmann, Angela; Buettner, Felix; Newhouse-Illige, Ty; Greer, James; Beach, Geoffrey | We suggest that more sophisticated techniques that directly probe the magnetic order are required to infer information about the AF magnetic state in such systems. | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 42 | Anisotropic Magnetoresistance and Nontrivial Spin Magnetoresistance in Pt/α-Fe2O3 Bilayers | Yu, Sisheng; Cheng, Yang; Ahmed, Adam; Zhu, Menglin; Hwang, Jinwoo; Yang, Fengyuan | In this work, we observed anomalous Hall effect and anisotropic magnetoresistance in angular dependent magnetoresistance (ADMR) measurements in Pt on antiferromagnetic (AF) α-Fe2O3(0001) epitaxial thin films at 10 K, which provide evidence for the MPE[1]. | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 43 | Magnetic anisotropy in a single crystal antiferromagnetic thin film | Siddiqui, Saima; pearson, john; Hoffmann, Axel | In this work, we deposit α-Fe 2O 3 (200 nm)/Pt (6 nm) on (11-20) Al 2O 3. | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 44 | Néel vector switching in enhanced-TN magnetoelectric thin films | Mahmood, Ather; Echtenkamp, Will; Wang, Junlei; Binek, Christian | Néel vector switching in enhanced-TN magnetoelectric thin films | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 45 | Voltage Controlled Anisotropy in Boron-doped Cr2O3 thin films | Echtenkamp, Will; Mahmood, Ather; Binek, Christian | Voltage Controlled Anisotropy in Boron-doped Cr2O3 thin films | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 46 | Antiferromagnetic Domain Dynamics in Nickelate Heteorstructures | Lee, Sangjae; Jiang, Juan; Fabbris, Gilberto; Mazzoli, Claudio; Disa, Ankit; Dean, Mark; Walker, Frederick; Ahn, Charles | We investigate how dimensional confinement leads to phase fluctuations in atomically layered (NdNiO 3) m/(NdAlO 3) n heterostructures through x-ray photon correlation spectroscopy (XPCS). | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 47 | Spin transport in antiferromagnetic insulators: progress and challenges | Hou, Dazhi; Qiu, Zhiyong; Barker, Joseph; Yamamoto, Kei; Gomonay, Olena; Saitoh, Eiji | In this talk I would like to introduce our recent progress of spin transport in antiferromagnetic insulators, e.g., the observations of temperature dependence of spin transmission, and spin current switching[2,3]. | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 48 | Spin Transport in Multiferroic BiFeO3 thin films | Zhang, Hongrui; Huang, Xiaoxi; Huang, Yen-Lin; Ramesh, Ramamoorthy | We study spin-current transmission in La-doped BiFeO 3 (LBFO) thin films by using a trilayer device that sandwiches a LBFO thin film between a magnetic CoFe and a strong spin orbit coupling SrRuO 3 layer. | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 49 | Unleashing antiferromagnetic fluctuations for charge and spin responses of pseudo-spin-half square-lattice | Hao, Lin; Yang, Junyi; Zhang, Han; Meyers, Derek; Suwa, Hidemaro; Wang, Zhentao; Dean, Mark; Batista, Cristian; Liu, Jian | Here we will present a series of exciting findings in pseudo-spin-half square-lattice systems, which are implemented as artificial layered iridates [(SrIrO 3) 1/(SrTiO 3) m] to engage with a staggered magnetic field effect (STMF) due to strong spin-orbit interaction. | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 50 | Intrinsic Exchange Bias in Epitaxial CoFe2O4 thin film | Yang, Detian; Xu, Xiaoshan; Yun, Yu | To ascertain the mechanism of IEB, we grew CoFe2O4 thin films epitaxially on sapphire (0001) substrates by pulsed laser deposition and studied its magnetometry by superconducting quantum interference device. | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 51 | Fabrication of GeNi2O4, GeCu2O4, and MgCr2O4 Epitaxial Thin Films | Wen, Fangdi; Vasiukov, Denis; Kareev, Mikhail; Liu, Xiaoran; Wu, Liang; Shafer, Padraic; Arenholtz, Elke; Chakhalian, Jak | Here we report on the first growth of the (001)-oriented GeNi 2O 4, (001)-oriented GeCu 2O 4 and (111)-oriented MgCr 2O 4. | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 52 | Designing complex exchange interaction pathways in spinel films using entropy stabilization | Ward, Thomas; Mazza, Alessandro; Musico, Brianna; Skoropata, Elizabeth; Sharma, Yogesh; Zhang, Wenrui | We will describe how cation selection can be used to modify the type and strength of exchange interactions present in the crystal lattice. | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 53 | Tunable electronic and magnetic properties in Eu1-xLaxTiO3 (0< x <1) | Shin, Hyungki; Davidson, Bruce; Li, Fengmiao; Liu, Chong; Sutarto, Ronny; Zou, Ke | We explore the magnetic transitions and electronic structures of strained Eu 1-xLa xTiO 3 (0<x<1) grown by oxide molecular beam epitaxy (MBE). | Session 3: Antiferromagnetic Oxide Thin Films for Spintronics |
| 54 | Time-resolved ultrafast oscillation of octupole polarization in a chiral antiferromagnet Mn3Sn | Miwa, Shinji | In this talk, we report our time-resolved observation of spin precession in a metallic chiral antiferromagnet Mn 3Sn [4]. | Session 4: Antiferromagnetic Spintronics |
| 55 | Evidence of Electrical Switching of the Antiferromagnetic Néel Vector | Chiang, Chih-Chieh; Huang, Ssu Yen; Qu, Danru; Wu, Po-Hsun; Chien, Chia-Ling | We show that under a large writing current density beyond the Ohmic regime, the multi-terminal devices can generate unintended anisotropic thermal gradient and voltages. | Session 4: Antiferromagnetic Spintronics |
| 56 | Spin-torque control of the noncollinear antiferromagnetic order in antiperovskites | Gurung, Gautam; Shao, Ding-Fu; Tsymbal, Evgeny | Here, we predict that the spin torque can be efficiently used to control the noncollinear AFM order in antiperovskite materials. | Session 4: Antiferromagnetic Spintronics |
| 57 | Nonlinear anomalous Hall effect for Néel vector detection | Shao, Ding-Fu; Zhang, Shuhui; Gurung, Gautam; Yang, Wen; Tsymbal, Evgeny | Here, we predict that the nonlinear anomalous Hall effect (AHE) can be used to detect the Néel vector in most compensated antiferromagnets supporting the antidamping SOT. | Session 4: Antiferromagnetic Spintronics |
| 58 | Rotating Néel Order to Probe Crystalline and Non-Crystalline AMR in FeRh | Sklenar, Joseph; Shim, Soho; Saglam, HIlal; Kang, Kisung; Oh, Junseok; Hamilton, Greg; Zhang, Wei; Gilbert, Matthew; Schleife, Andre; Hoffmann, Axel; Mason, Nadya | We confirm that AMR arises from rotating Neel order two ways: 1) We developed a procedure combining rotating and linearly swept fields to demonstrate an angular hysteresis effect; 2) We use density functional theory for a first-principles description of the evolution of the AMR signal, representing the external magnetic field by canted spins and the sweeping field by Néel vector rotation from the [100] direction. | Session 4: Antiferromagnetic Spintronics |
| 59 | Nonvolatile control of long-distance spin transport in an easy-plane antiferromagnetic insulator | Han, Jiahao; Zhang, Pengxiang; Fan, Yabin; Safi, Taqiyyah; Xiang, Junxiang; Cheng, Ran; Liu, Luqiao | Here we show that efficient spin transport over micrometer distance indeed happens in an easy-plane antiferromagnetic insulator, α-Fe 2O 3 thin film. | Session 4: Antiferromagnetic Spintronics |
| 60 | Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet | Li, Bo; Sandhoefner, Shane; Kovalev, Alexey | We formulate a general linear response theory for magnons in noncollinear antiferromagnets subject to a temperature gradient and analyze the effect of symmetries on the response tensor. | Session 4: Antiferromagnetic Spintronics |
| 61 | Electric-field control of magnon spin current in an antiferromagnetic insulator | Liu, Changjiang; Luo, Yongming; Hong, Deshun; Zhang, Shulei; pearson, john; Fisher, Brandon; Hoffmann, Axel; Bhattacharya, Anand | As a result, we show that the spin-flop transition in this material can be switched on or off by varying only an electrical voltage. | Session 4: Antiferromagnetic Spintronics |
| 62 | Phenomenological theory of coherent and incoherent spin currents in antiferromagnetic spin pumping | Cheng, Ran | We formulate a phenomenological theory to capture the coupled dynamics of coherent and incoherent magnons in collinear antiferromagnets driven by sub-THz sources, which can fit very well with the experimental observation and explain why the competition between coherent and incoherent magnons leads to a sign change in the spin current at a turning temperature. | Session 4: Antiferromagnetic Spintronics |
| 63 | 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, Zi Q. | 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 4: Antiferromagnetic Spintronics |
| 64 | Spin Current from sub-Terahertz-generated Antiferromagnetic Magnons | Li, Junxue; Wilson, Blake; Cheng, Ran; Lohmann, Mark; Kavand, Marzieh; Yuan, Wei; Aldosary, Mohammed; Agladze, Nikolay; Wei, Peng; Sherwin, Mark; Shi, Jing | Here we report sub-terahertz spin pumping in heterostructures of a uniaxial antiferromagnetic Cr 2O 3 crystal and a heavy metal of Pt or Ta (Beta-phase). | Session 4: Antiferromagnetic Spintronics |
| 65 | Quantitative Study on Current-Induced Effects in an Antiferromagnet Insulator/Pt Bilayer Film | Zhang, Pengxiang; Liu, Luqiao | Here by utilizing an antiferromagnetic insulator with Dzyaloshinskii-Moriya interaction, α-Fe2O3, we show that the Néel vector can be controlled with a moderate external field, which is further utilized to calibrate the current-induced magnetic dynamics. | Session 4: Antiferromagnetic Spintronics |
| 66 | Resonant ultrasound studies of Fex=0.33NbS2 | Lewin, Sylvia; Nagarajan, Vikram; Perko-Engel, Gabriel; Maniv, Eran; Haley, Shannon; Analytis, James | Resonant ultrasound studies of Fex=0.33NbS2 | Session 4: Antiferromagnetic Spintronics |
| 67 | Coexistence of Magnetic Orders in Two-Dimensional Magnet CrI3 | Niu, Ben; Su, Tang; Francisco, Brian; Ghosh, Subhajit; Kargar, Fariborz; Huang, Xiong; Lohmann, Mark; Li, Junxue; Xu, Yadong; wu, di; Balandin, Alexander; Shi, Jing; Cui, Yongtao | In this work, we use cryogenic magnetic force microscopy to investigate CrI 3 flakes in the intermediate thickness range (25 – 200 nm) and find that the two types of magnetic orders can coexist in the same flake, with a layer of ~13 nm at each surface being in the layered AFM phase similar to few-layer CrI 3 and the rest in the bulk FM phase. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 68 | The honeycomb quantum Heisenberg ferromagnet model with anisotropic exchange interactions | Vanherck, Joren; Soree, Bart; Magnus, Wim | Here, we present analytical results that were obtained using double-time temperature-dependent Green’s functions [2]. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 69 | Two-dimensional Ferromagnetic van der Waals CrX3 (X=Cl, Br, I) Monolayers with Enhanced Anisotropy and Curie Temperature | Xue, Feng; Wu, Ruqian | To tune the in-plane ferromagnetism of CrCl 3 ML into the desirable perpendicular one, we propose substituting Cr with isovalent tungsten (W). | Session 5: Atomically-Thin and 2D Ferromagnets |
| 70 | Spin wave excitations in van der Waals honeycomb ferromagnets | Chung, Jae-Ho | In this talk, we focus on honeycomb ferromagnets where linear Dirac crossings in their magnon bands similarly to the electronic band of graphene [2]. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 71 | Observation of 2D magnons in atomically thin CrI3 | Cenker, John; Huang, Bevin; Suri, Nishchay; Thijssen, Pearl; Miller, Aaron; McGuire, Michael; Xiao, Di; Xu, Xiaodong | Here, we report the observation of 2D magnons in atomically thin CrI 3 by magneto-optical Raman measurements. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 72 | Tuning Inelastic Light Scattering via Symmetry Control in 2D Magnet CrI3 | Huang, Bevin; Cenker, John; Zhang, Xiaoou; Ray, Essance; Song, Tiancheng; Taniguchi, Takashi; Watanabe, Kenji; McGuire, Michael; Xiao, Di; Xu, Xiaodong | In monolayers, we found an extraordinarily large magneto-optical Raman effect from an A 1g phonon mode due to ferromagnetic order. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 73 | Phonon-mediated magnetic order control of bilayer antiferromagnets | Rodriguerz-Vega, Martin; Lin, Zexun; Chaudhary, Gaurav; Leonardo, Aritz; Vergniory, Maia; Fiete, Greg | We employ group theory methods to determine the nature of the phonons modes and their allowed non-linear coupling terms in the AFM groundstate. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 74 | Strain effect on magnetism of atomically thin CrI3 | Song, Qian; Occhialini, Connor; Zhang, Difei; Li, Jiarui; Levitan, Abraham; Comin, Riccardo | Here we report on the study of bilayer CrI 3 on different substrates, using Raman and magneto-optical Kerr effect measurements to reveal the interplay between epitaxial strain, lattice structure, and spin ordering. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 75 | Intrinsic Ferromagnetism in 2D CrxSe1-x Crystals | Bian, Mengying; He, Keke; Sun, Fan; Wang, Peijian; Jalouli, Alireza; Bird, Jonathan; Hou, Yanglong; Zeng, Hao | In this work, a 2D non-vdW magnetic material, Cr xSe 1-x, has been synthesized using an ambient pressure chemical vapor deposition method. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 76 | Temperature dependent study of magnetization dynamics in CrCl3 – a layered antiferromagnet | MANDAL, SUPRIYA; Kapoor, Lucky; Manni, Soham; Patankar, Meghan; Thamizhavel, A.; Deshmukh, Mandar | We report a detailed study of magnetization dynamics of bulk CrCl 3 placed on a coplanar waveguide (CPW) as a function of temperature. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 77 | VI3: a 2D Ising ferromagnet | yang, ke | Here we propose the van der Waals (vdW) material VI 3 to be a 2D Ising ferromagnet (FM), using density functional calculations, crystal field level diagrams, superexchange model analyses, and Monte Carlo simulations. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 78 | Two-dimensional magnetism in a van der Waals semiconductor | Telford, Evan; Dismukes, Avalon; Lee, Kihong; Cheng, Minghao; Watanabe, Kenji; Taniguchi, Takashi; Pasupathy, Abhay; Zhu, Xiaoyang; Dean, Cory; Roy, Xavier | We present clear evidence of layered antiferromagnetic ordering at ~130K, below which the spins in each sheet are aligned ferromagnetically parallel to the plane while the interlayer coupling is antiferromagnetic. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 79 | Giant and nonreciprocal second harmonic generation from layered antiferromagnetism in bilayer CrI3 | Sun, Zeyuan; Yi, Yangfan; Song, Tiancheng; Clark, Genevieve; Huang, Bevin; Shan, Yuwei; Wu, Shuang; Huang, Di; Gao, Chunlei; Chen, Zhanghai; McGuire, Michael; Cao, Ting; Xiao, Di; Liu, Wei-Tao; Yao, Wang; Xu, Xiaodong; Wu, Shiwei | In this talk, we present an emergent nonreciprocal second-order nonlinear optical effect in bilayer CrI 3. | Session 5: Atomically-Thin and 2D Ferromagnets |
| 80 | Magnetic textures with particle properties beyond skyrmions: chiral bobbers, globules, and hopfions | Kiselev, Nikolai S. | I present the micromagnetic functional [8] and magnetic interactions allowing the stability of these objects and discuss the static and dynamic properties of these objects. | Session 6: Chiral Interactions and Phase Transitions |
| 81 | Magnetic structures in 1D spin chains with long-range RKKY and Dzyaloshinskii-Moriya interactions | Vernek, Edson; Avalos-Ovando, Oscar; Ulloa, Sergio | We investigate the role of spin-orbit effects by considering spin-1/2 chains in the presence of both RKKY and Dzyaloshinskii-Moriya (DM) LRIs. | Session 6: Chiral Interactions and Phase Transitions |
| 82 | Magnetic field induced spin liquids and quantum phase transitions in spin orbit coupled quantum magnets. | Lee, Minseong; Zapf, Vivien; Zhou, Haidong | In this work, we present the analysis of inelastic neutron scattering data of a-RuCl3 and extracted g-factor and the Γ/J using linear spin wave theory. In addition, we present the out-of-plane pulsed field data of a-RuCl3 to study a new phases predicted by theoretical studies by drawing the full field vs temperature phase diagram. | Session 6: Chiral Interactions and Phase Transitions |
| 83 | Exchange Coupling Torque in Ferrimagnetic Bi-layer Systems at the Angular Momentum Compensation Temperature | Bläsing, Robin; Ma, Tianping; Yang, See-Hun; Garg, Chirag; Parkin, Stuart | In this talk we show that this mechanism also applies to ferrimagnetic layers consisting of a transition metal layer and a rare earth metal layer which couple antiferromagnetically. | Session 6: Chiral Interactions and Phase Transitions |
| 84 | Spontaneous rotation of ferrimagnetism driven by antiferromagnetic spin canting | Vibhakar, Anuradha; Khalyavin, Dmitry; Manuel, Pascal; Belik, Alexei; Johnson, Roger | Here, we demonstrate an alternative paradigm for spin reorientation in distorted perovskites. | Session 6: Chiral Interactions and Phase Transitions |
| 85 | Using structural phase transitions to enhance the coercivity of ferromagnetic films | Need, Ryan; Lauzier, Joshua; Sutton, Logan; Kirby, Brian; De La Venta, Jose | Here, we describe a mechanism for tuning the coercivity of ferromagnetic films over small temperature ranges by coupling them to a layer that undergoes a structural phase transition. | Session 6: Chiral Interactions and Phase Transitions |
| 86 | Parity-Time Symmetric Spintronics and Spin Cavitronics | Cao, Yunshan; Yang, Huanhuan; Wang, Chen; Yu, Tianlin; Yan, Peng | Here, we predict that a ferromagnet with gain (loss) is equivalent to an antiferromagnet with an equal amount of loss (gain), and show a ferromagnet to antiferromagnet phase transition in PT-symmetric magnetic bilayers when the balanced gain-loss parameter exceeds a critical value. | Session 6: Chiral Interactions and Phase Transitions |
| 87 | Ultrafast Control of Charge Density and Spin Density waves in Chromium | Ponet, Louis; Gorobtsov, Oleg; Singer, Andrej; Artyukhin, Sergey | We use Landau theory and heat transfer equations to describe the dynamics of the interacting charge and spin density waves. | Session 6: Chiral Interactions and Phase Transitions |
| 88 | Realizing corner states in artificial crystals based on topological spin textures | Yan, Peng; Li, Zhixiong; Cao, Yunshan; Wang, Xiang Rong | We propose the use of the quantized Z_6 Berry phase to characterize the nontrivial topology. | Session 6: Chiral Interactions and Phase Transitions |
| 89 | 3D Topological solitons in chiral magnets | Voinescu, Robert; Smalyukh, Ivan; Tai, Jung-Shen | By exploiting the external magnetic field and crystalline anisotropy couplings in a micromagnetic hamiltonian we numerically model a new class of 3D topological solitons embedded in a helical background. | Session 6: Chiral Interactions and Phase Transitions |
| 90 | Unprecedented Electronic Structure, Magnetism, and Anisotropy in Rare Earth Intermetallics | Paudyal, Durga; Choudhary, Renu; Skomski, Ralph | The two-sublattice crystal-field theory describes a broad variety of physical properties exhibited by rare earth transition metals, such as the temperature dependence of magnetization and anisotropy, but it is not a first-principles approach. | Session 6: Chiral Interactions and Phase Transitions |
| 91 | Nanoscale Spatial Dependence of Photoinduced Structural Phase Transition in FeRh | Ahn, Youngjun; Cherukara, Mathew; Cai, Zhonghou; Walko, Donald; Bartlein, Michael; Zhou, Tao; Thiele, Jan-Ulrich; Fullerton, Eric; Holt, Martin; Evans, Paul; Wen, Haidan | Here, using newly developed x-ray diffraction microscopy with unprecedented 100 ps and 30 nm resolution at the Advanced Photon Source, we have observed the nanoscale dependence of the structural relaxation dynamics following ultrafast laser excitation of an FeRh thin film. | Session 6: Chiral Interactions and Phase Transitions |
| 92 | Electric-field control of the interlayer exchange coupling | Sayed, Shehrin; Hsu, Cheng-Hsiang; Roschewsky, Niklas; Yang, See-Hun; Salahuddin, Sayeef | We propose a new mechanism for electric-field controlled magnetization switching, assisted solely by the interlayer exchange coupling (IEC) between the fixed and the free magnets. | Session 6: Chiral Interactions and Phase Transitions |
| 93 | Manipulation of topological spin structures at ultrathin magnetic interfaces by oxygen adsorption and interlayer exchange coupling | Chuang, Tzu-Hung; Lan, Liang-Wei; Wu, Ming-Ching; Liu, Chia-Chi; Chan, Yao-Jui; Huang, Chih-Heng; Wei, Der-Hsin; Kuo, Chien-Cheng | Here we report two ultrathin ferromagnetic systems, where the first one demonstrates a microscopic insight on how the oxygen adsorption modulates the spin reorientation transition (SRT) of a Fe/Ni bilayer on Cu(100) and consequently impacts on the DMI of the interface. | Session 7: Chiral and Topological Spin Textures |
| 94 | Equilibrium thermodynamic properties of chiral skyrmions in ferromagnetic materials | Zivieri, Roberto | Equilibrium thermodynamic properties of chiral skyrmions in ferromagnetic materials | Session 7: Chiral and Topological Spin Textures |
| 95 | Theory of the Lifetime of Metastable Skyrmions in Chiral Magnets | Wu, Po-Kuan; Rowland, James; Randeria, Mohit | We will present numerical and variational results as a function of ferromagnetic exchange J, Dzyaloshinskii-Moriya interaction D, effective anisotropy K, and the external field B, and discuss the relation between the size and lifetime of metastable skyrmions. | Session 7: Chiral and Topological Spin Textures |
| 96 | Melting the skyrmion lattice – from solid to liquid via a hexatic phase | Huang, Ping; Schoenenberger, Thomas; Cantoni, Marco; Heinen, Lukas; Magrez, Arnaud; Rosch, Achim; Carbone, Fabrizio; Ronnow, Henrik | Here we show, by direct imaging with cryo-Lorentz transmission electron microscopy, that the phase of the skyrmion ensembles in the material Cu2OSeO3 can be tuned by magnetic fild from two-dimensional skyrmion solids, through the long-speculated skyrmion hexatic phase, to skyrmion liquids, with the local spin order preserved throughout the whole process. | Session 7: Chiral and Topological Spin Textures |
| 97 | Quantifying Order in Magnetic Systems with Convolutional Neural Networks | Downing, Gary; Beg, Marijan; Fangohr, Hans; dasmahapatra, Srinandan; Hovorka, Ondrej | In this presentation, we discuss an approach based on applying convolutional neural networks (CNNs) to extract representative features of skyrmionic textures from simulated snapshots of complex magnetic backgrounds. | Session 7: Chiral and Topological Spin Textures |
| 98 | Creation of magnetic skyrmions by surface acoustic waves in Pt/Co/Ir trilayer films | Yokouchi, Tomoyuki; Sugimoto, Satoshi; Rana, Bivas; Seki, Shinichiro; Ogawa, Naoki; Kasai, Shinya; Otani, Yoshichika | In this presentation, we demonstrate a novel approach for skyrmion creation by employing surface acoustic waves (SAWs); in asymmetric multilayers of Pt/Co/Ir, we experimentally observed at room temperature that skyrmions can be created by propagating SAWs in a wide area of the magnetic film due to the long propagation length of SAWs. | Session 7: Chiral and Topological Spin Textures |
| 99 | Thermal Collapse of a Skyrmion | Derras-Chouk, Amel; Chudnovsky, Eugene; Garanin, Dmitry | The recently developed pulse- noise algorithm has been used for the stochastic component of the equations. | Session 7: Chiral and Topological Spin Textures |
| 100 | Operando study of chiral magnetic textures under electrical bias using Lorentz scanning transmission electron microscopy | Park, Albert; Chen, Zhen; Zhu, Lijun; Buhrman, Robert; Muller, David; Fuchs, Gregory | We develop a device fabrication process that is compatible with operando Lorentz Scanning Transmission Electron Microscopy (LSTEM) for studying chiral magnetic textures and their electric current dependent behavior with nanometer-scale spatial resolution. | Session 7: Chiral and Topological Spin Textures |
| 101 | Robust magnetization dynamics and magnetocaloric anomalies across the phase diagrams of noncollinear magnets | Clements, Eleanor; Das, Raja; Pokharel, Ganesh; Li, Ling; Mandrus, David; Osofsky, Michael; Srikanth, Hariharan; Phan, Manh-Huong | We present recent studies on the magnetic phase evolution of noncollinear spin textures analyzing the nonlinear ac magnetic response and magnetocaloric effect for selected crystalline magnetic materials with broken inversion symmetry: Cr 1/3NbS 2, GaV4S8, and MnSi. | Session 7: Chiral and Topological Spin Textures |
| 102 | Surface acoustic waves (SAW) and pinning of magnetic domain walls in a ferromagnetic multilayer. | Adhikari, Anil; Adenwalla, Shireen | We investigate the effects of SAW on pinning and motion of domain walls in films of Cr(2nm)/Pt(2nm)/[Co(0.3nm)/Pt(0.6nm)] 5 that are patterned into micron wide stripes between a pair of inter-digital transducers (IDTs), all on a 128 -Y cut LiNbO 3 substrate. | Session 7: Chiral and Topological Spin Textures |
| 103 | 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 interfaces between adjacent regions with differing properties such as DMI (Dzyaloshinskii-Moriya interaction), anisotropy, exchange, etc.. | Session 7: Chiral and Topological Spin Textures |
| 104 | Stability of biskyrmions in centrosymmetric magnetic films | Capic, Daniel; Garanin, Dmitry; Chudnovsky, Eugene | We compute the magnetic moment of a biskyrmion and discuss ways of creating biskyrmions in experiment. | Session 7: Chiral and Topological Spin Textures |
| 105 | Magnetic domain dynamics in an insulating quantum ferromagnet | Tang, Christopher; Silevitch, Daniel; Xu, Jian; Dahmen, Karin; Rosenbaum, Thomas | For large avalanches at temperatures approaching the Curie point, we find a response free of the signatures of drag effects. | Session 7: Chiral and Topological Spin Textures |
| 106 | Topological Hall Effect in SrTiO3/SrIrO3/SrRuO3 Superlattices | Flores, Jose; Ahmed, Adam; Wang, Binbin; Bagues Salguero, Nuria; McComb, David; Yang, Fengyuan | Here we investigated the topological hall effect in STO(001)/SrRuO 3/SrIrO 3/SrTiO 3 superlattices where SrTiO 3 acts as a spacer layer that seperates the FM/HM layers SrRuO 3/SrIrO 3. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 107 | Tunable real- and momentum-space topological properties in SrRuO3 ultrathin films | Wang, Lingfei; Noh, Tae Won | We developed several experimental methods for distinguishing the skyrmion-induced topological Hall effect from the two-channel AHE. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 108 | Investigating the Skyrmion Phase Diagram in Polycrystalline Chemically Substituted Cu2OSeO3 with Small Angle Neutron Scattering | Neves, Paul; Gilbert, Dustin; Ran, Sheng; Liu, I-Lin; Saha, Shanta; Collini, John; Bleuel, Markus; Paglione, Johnpierre; Borchers, Julie; Butch, Nicholas | Here, we discuss results studying the magnetic phase diagram of chemically substituted polycrystalline (Cu 1-xM x) 2OSeO 3, M = (Ag, Zn), and Cu 2(O 1-xS x) 2SeO 2 with bulk magnetization and small angle neutron scattering (SANS). | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 109 | Theoretical investigations of Topological Hall Effect at Manganite/Iridate Oxide Interfaces | Mohanta, Narayan; Dagotto, Elbio; Okamoto, Satoshi | We study topological Hall effect at the interface between La1−xSrxMnO3 and SrIrO3. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 110 | Investigation of Domain Walls in Single Crystal Cr2O3 Using Nitrogen Vacancy Scanning Magnetometry | Hedrich, Natascha; Wagner, Kai; Shields, Brendan; Kosub, Tobias; Makarov, Denys; Maletinsky, Patrick | Here, we present a quantitative study of domain walls in single crystal chromia using nitrogen vacancy (NV) magnetometry, performed with all-diamond scanning probes, where we make use of the sub 1 uT/√Hz sensitivity and sub 50 nm spatial resolution of these structures to investigate the domain wall properties at the nanoscale. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 111 | Spin Dynamics in the Antiferromagnetic Oxy- and Fluoro- Pnictides: LaMnAsO, LaMnSbO, and BaMnAsF | ISLAM, FARHAN; Das, Pinaki; Liu, Yong; Gordon, Elijah; Ke, Liqin; Abernathy, Douglas; McQueeney, Robert; Vaknin, David | Inelastic neutron scattering (INS) from polycrystalline LaMnAsO, LaMnSbO, and BaMnAsF are analyzed using J 1-J 2-J c Heisenberg model in the framework of the linear spin-wave theory. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 112 | Magnetic structure and spin dynamics of a buckled-honeycomb antiferromagnet Co4Ta2O9 | Choi, Sungkyun; Kiryukhin, Valery; Gutmann, Matthias; Voneshen, David; Pan, Shangke; Cheong, Sang-Wook | Keeping this interest, we present a combined measurement of magnetic susceptibility, neutron diffraction and inelastic neutron scattering on Co4Ta2O9 [3]. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 113 | Direct visualization of domain dynamics in Ni2MnTeO6 antiferromagnet using X-ray Bragg diffraction Phase contrast Imaging. | Kim, Min Gyu; Choi, Sungkyun; Miao, Hu; Won, Choongjae; Yang, Junjie; Hu, Wen; Mazzoli, Claudio; Cheong, Sang-Wook; Barbour, Andi; Wilkins, Stuart; Robinson, Ian; Dean, Mark; Kiryukhin, Valery | Using recently developed X-ray Bragg diffraction Phase contrast Imaging (XBPI) technique that can visualize AFM domains and domain walls in real-time and real-space, we present the growth and merging of the AFM domains in real-time as a function of temperature in Ni 2MnTeO 6 where two AFM states with different Q vectors exist. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 114 | Random Telegraph Noise in Ferromagnetic Garnets | Sponsel, Robert; Dahlberg, E. Dan | Random Telegraph Noise in Ferromagnetic Garnets | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 115 | Magnetic structure and electronic properties in Layered BaMn2Sb2 and Ba2Mn3Sb2O2 | Zhang, Qiang; Diao, Zhenyu; Cao, Huibo; Us Saleheen, Ahmad Ikhwan; Chapai, Ramakanta; Gong, Dongliang; Stadler, Shane; Jin, Rongying | We present the structural, electronic, and magnetic properties of BaMn 2Sb 2 and Ba 2Mn 3Sb 2O 2 single crystals, both with the layered structure analogous to high-temperature Fe- and/or Cu-based superconductors. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 116 | Calculated magnetic exchange interactions in the Dirac magnon material Cu3TeO6 | Wang, Di; Bo, Xiangyan; Tang, Feng; Wan, Xiangang | In this work, we calculate the magnetic exchange interactions J’s using the first-principles linear-response approach and find that these J’s are short range and negligible for the Cu-Cu atomic pair longer than 7 Å. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 117 | Elucidation of spin reorientation and short-range ferromagnetic correlations in double perovskite Ho2FeCoO6 | Heitmann, Thomas; G R, HARIPRIYA; Sethupathi, K.; Sankaranarayanan, V.; Pradheesh, R.; Nair, Harikrishnan | We report on energy resolved neutron diffraction and inelastic neutron scattering studies of double perovskite Ho 2FeCoO 6. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 118 | Precursor effects to the Verwey transition of Fe3O4: a MaxEnt-μSR study. | Morante, Carlos; Boekema, Carolus | At 205 K, the lower signal follows the extension above T w. Short-range ordering could be interpreted as precursor effects to the T v transition. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 119 | Spin waves above and below the Verwey transition in TbBaFe2O5 | Pajerowski, Daniel; Pratt, Daniel; Hahn, Steven; Tian, Wei; Granroth, Garrett; Kolesnikov, Alexander; Taskin, Alexey; Ando, Yoichi; McQueeney, Robert | Spin waves above and below the Verwey transition in TbBaFe2O5 | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 120 | Indirect Chiral Magnetic Exchange through Dzyaloshinskii-Moriya–Enhanced RKKY Interactions | Bode, Matthias; Schmitt, Martin; Park, Chong; Weber, Paula; Jäger, Andreas; Kemmer, Jeannette; Vogt, Matthias | Here we present a spin-polarized scanning tunneling microscopy study of transition metal oxide chains on the (001) surfaces of Ir and Pt. | Session 8: Complex Oxide Interfaces & Heterostructures – Skyrmions and Novel Magnetism |
| 121 | Three-dimensional correlated topological semimetals | Gooth, Johannes | Here, we will present two recent examples of phases of matter, arising from the interplay of interaction and non-trivial topology: an axionic charge density wave and three-dimensional quantum Hall states. | Session 9: Correlated and Magnetic Topological Materials |
| 122 | A catalogue of non-magnetic and magnetic topological materials | Regnault, Nicolas; Xu, Yuanfeng; Vergniory, Maia; Elcoro, Luis; Felser, Claudia; Wang, Zhijun; Wieder, Benjamin; Chen, Yulin; Song, Zhida; Bernevig, Andrei | In this talk, we will present the two databases of topological materials that we now provide to the community. | Session 9: Correlated and Magnetic Topological Materials |
| 123 | Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co3Sn2S2 | Avraham, Nurit; Morali, Noam; Batabyal, Rajib; Kumar Nag, Pranab; Enke, Liu; Xu, Qiunan; Sun, Yan; Yan, Binghai; Felser, Claudia; Beidenkopf, Haim | In my talk I will describe how we visualize the topological “Fermi arc" states using quasiparticle interference measurements and show that the measured band structure of Co3Sn2S2 exhibits direct signature of time reversal symmetry breaking, induced by the magnetic order of the Co atoms. | Session 9: Correlated and Magnetic Topological Materials |
| 124 | Chiral and magnetic topological semimetals | Schröter, Niels | Here, I will present evidence from angle-resolved photoelectron spectroscopy that a family of intermetallic catalysts, including PtAl and PdGa [1,2], are chiral topological semimetals. | Session 9: Correlated and Magnetic Topological Materials |
| 125 | Chiral spin textures: anti-skyrmions, elliptical skyrmions and Néel skyrmions | Parkin, Stuart | We discuss various spin textures that range from chiral domain walls in synthetic antiferromagnetic racetracks to anti-skyrmions and elliptical skyrmions in inverse tetragonal Heusler compounds to Néel skyrmions in a non-centro-symmetric hexagonal ternary compound. | Session 9: Correlated and Magnetic Topological Materials |
| 126 | Chemical control of magnetism in S = 1 quantum materials: new twists on a seemingly old theme | Manson, Jamie; Villa, Jacqueline; Villa, Danielle; Calderon-Lin, Isabel; Manson, Zachary; Grinalds, Nathan; Sargent, Ashley; Blackmore, William; Curley, Sam; Goddard, Paul; Singleton, John; Stone, Matthew; Johnson, Roger; Garlea, Vasile; Manuel, Pascal; Brown, Craig | We aim to control the spatial exchange and single-ion anisotropies ( D) in bespoke S = 1 Ni(II) quantum magnets. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 127 | A near-ideal molecule-based Haldane spin chain | Goddard, Paul; Williams, Robert; Blackmore, William; Curley, Sam; Lees, Martin; Birnbaum, Serena; Singleton, John; Huddart, Benjamin; Hicken, Thomas; Lancaster, Tom; Blundell, Stephen; Xiao, Fan; Ozarowski, Andrew; Pratt, Francis; Voneshen, David; Guguchia, Zurab; Baines, Christopher; Schlueter, J.A.; Villa, Danielle; Manson, Jamie | We report on a new molecule-based magnet NiI2(3,5-lutidine)4 characterized using x-ray diffraction, electron-spin resonance, magnetometry, inelastic neutron scattering and muon-spin relaxation. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 128 | Magnetic ground-state of two new highly one-dimensional ferromagnetic chain compounds M(NCS)2(thiourea)2; M = Co, Ni. | Curley, Sam; Williams, Robert; Goddard, Paul; Scatena, Rebecca; Blundell, Stephen; Macchi, Piero; Hicken, Thomas; Lancaster, Tom; Xiao, Fan; Eckert, James; Zapf, Vivien; Villa, Jacqueline; Manson, Jamie | We employ a combination of magnetometry, heat capacity and muon spin-rotation in addition to theoretical charge density analysis, in an attempt to resolve the magnetic ground-state of both materials. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 129 | Cluster-Based Haldane States in Spin Cluster Chains | Sugimoto, Takanori; Morita, Katsuhiro; Tohyama, Takami | Thus, we will present several varieties of cluster-based Haldane states obatined in possible spin lattices. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 130 | A Novel Strongly Spin-Orbit Coupled Quantum Dimer Magnet: Yb2Si2O7 | Hester, Gavin; Nair, Harikrishnan; Reeder, Timothy; Yahne, Danielle; DeLazzer, Timothy; Berges, Léo; Ziat, Djamel; Neilson, James; Aczel, Adam; Sala, Gabriele; Quilliam, Jeffrey; Ross, Kate | I will discuss a new QDM in the strongly spin-orbit coupled, distorted honeycomb-lattice material Yb 2Si 2O 7. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 131 | Dimensionality of the BEC state in structurally healed Sr-doped BaCuSi2O6 | Weickert, Dagmar; Jaime, Marcelo; Puphal, Pascal; Imajo, Shusaku; Kohama, Yoshimitsu; Link, Joosep; Stern, Raivo | We establish the H-T phase diagram based on magnetization, magnetic torque, specific heat and magnetocaloric effect (MCE) measurements in DC and pulsed magnetic fields that address the dimensionality of excitations in the BEC critical exponents. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 132 | Unconventional critical behavior in the quasi-one-dimensional S = 1 chain NiTe2O5 | Lee, Jun Han; Kratochvílová, Marie; Cao, Huibo; Yamani, Zahra-Sadat; Kim, Jungsoo; Park, Je-Guen; Stewart, Gregory; Oh, Yoon Seok | In this talk, we present magnetic properties and structure of NiTe 2O 5 and discuss its unconventional critical behavior. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 133 | Magnetic phase diagram and anisotropy in the one-dimensional quantum spin system Rb2Cu2Mo3O12 | Hayashida, Shohei; Blosser, Dominic; Povarov, Kirill; Yan, Zewu; Gvasaliya, Severian; Ponomaryov, Alexey; Zvyagin, Sergei; Zheludev, Andrey | We report low temperature thermodynamic, magnetic and electron spin resonance (ESR) measurements on single crystal samples of a quantum spin chain material Rb 2Cu 2Mo 3O 12. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 134 | 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, Lawrence {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 10: Criticality and Low Dimensionality in Quantum Magnets |
| 135 | Using muons to probe magnetic phases in quantum disordered systems through muon-induced distortions | Huddart, Benjamin; Lancaster, Tom; Pratt, Francis | In this talk, we will present examples where the distortions induced by the muon provide sensitivity to the magnetic state of the system. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 136 | Kaleidoscope of Quantum Phases in a Frustrated Spin-1 Chain with Single-ion Anisotropy | Luo, Qiang; Hu, Shijie; Zhao, Jize; Wang, Xiaoqun | We study the phases and phase transitions of a spin-1 chain with next-nearest neighbor (NNN) interaction J 2 and uniaxial single-ion anisotropy D by density-matrix renormalization group method. | Session 10: Criticality and Low Dimensionality in Quantum Magnets |
| 137 | Using structural disorder to design terahertz optical response of ferromagnetic metal alloys | Lei, Ming; Coh, Sinisa | We find that alloying is a feasible way to tune the THz optical feature of ferromagnetic metals. | Session 11: Disordered Systems |
| 138 | Evolution of physical properties of RE3Ni5Al19 family (RE = Y, Nd, Sm, Gd, Tb, Dy, Ho, Er) | Ryzynska, Zuzanna; Winiarski, Michal; Xie, Weiwei; Klimczuk, Tomasz | Single crystals of RE 3Ni 5Al 19 series (RE = Y, Nd, Sm, Gd, Tb, Dy, Ho, Er) were grown using a self-flux method. | Session 11: Disordered Systems |
| 139 | Morphology of the glassy phase of a disordered ferromagnet | Andresen, Juan Carlos; Schechter, Moshe | Previous work established the existence of a novel ferromagnetic disordering mechanism in ferromagnetic disordered systems with random fields [Phys. | Session 11: Disordered Systems |
| 140 | High Curie temperature in Eu-doped GaN caused by Ga-vacancies | Masago, Akira; Shinya, Hikari; Fukushima, Tetsuya; Sato, Kazunori; Katayama-Yoshida, Hiroshi | The present study computationally demonstrates that room-temperature ferromagnetism, which has been experimentally observed in Eu-doped GaN, is induced by holes in N 2p states (i.e., Zener’s double exchange interaction) that arise on the assumption that Ga vacancies appear as a result of the introduction of Eu ions (i.e., volume compensation). | Session 11: Disordered Systems |
| 141 | Defect-related Optical and Electronic Properties of Ion-bombarded Hexagonal Boron Nitride | López-Morales, Gabriel; Li, Mingxing; Jayakumar, Harishankar; Proscia, Nicholas; Pagliero, Daniela; Lopez, Gustavo; Menon, Vinod; Meriles, Carlos | We report on work towards circumventing some of these limitations by implanting rare-earth impurities. | Session 11: Disordered Systems |
| 142 | Slowing down of spin glass correlation length growth: simulations meet experiments | Orbach, Raymond; Zhai, Qiang; Martin-Mayor, Victor; Schlagel, Deborah | Slowing down of spin glass correlation length growth: simulations meet experiments | Session 11: Disordered Systems |
| 143 | Response Time Reveals Temperature Chaos in Spin Glasses | Zhai, Qiang; Orbach, Raymond; Harrison, David | We found that in the one-step temperature quench to T 2 experiments, tweff was a monotonic function of waiting time tw until the system reached a quasi-equilibrium state. | Session 11: Disordered Systems |
| 144 | Probing spin glass energy landscapes with 1/f noise | Harrison, David; Dahlberg, E. Dan; Orbach, Raymond | We compare our 1/f noise data, as well as our data on the second spectrum (the noise in the 1/f noise), with previously published results on thicker CuMn films. | Session 11: Disordered Systems |
| 145 | Experimental Determination of the Critical Spin Glass Correlation Length | Kenning, Gregory | We have made detailed measurements of the waiting time effect of the thermoremanent magnetization (TRM) near the spin glass transition temperature T g. | Session 11: Disordered Systems |
| 146 | Demonstration and quantitative characterization of effective random exchange fields in ferromagnet/antiferromagnet bilayers | Collette, Dylan; Chen, Guanxiong; Urazhdin, Sergei | We utilize magnetoelectronic measurements of anisotropic magnetoresistance in Permalloy(Py)/CoO bilayers to confirm the predicted random-field effects and quantify the random field. | Session 11: Disordered Systems |
| 147 | Demagnetizing field dependent dynamic spin freezing model with random easy axes orientation in nanoparticles ensembles | Konwar, Korobi; Kaushik, Som; Sen, Debasis; Deb, Pritam | We investigate the dynamic freezing of magnetic ensembles with varied self-arrangement of constituent Zinc Ferrite nanoparticles in their hierarchical ensembles. | Session 11: Disordered Systems |
| 148 | Tuning the Properties of Colloidal Magnetic Particles for Thermometry on the Nanoscale | Biacchi, Adam; Bui, Thinh; De Lima Correa, Eduardo; Moffat, Thomas; Tew, Weston; Donahue, Michael; Woods, Solomon; Dennis, Cindi; Hight Walker, Angela | Tuning the Properties of Colloidal Magnetic Particles for Thermometry on the Nanoscale | Session 11: Disordered Systems |
| 149 | Classical and Tunneling Percolation Transitions in Nanoparticle Composites | Pokhrel, Shiva; Waters, Brendon; Huang, Zhi Feng; Nadgorny, Boris | In this work, we investigate a flexible model system based on half-metallic spherocylindrical CrO 2 nanoparticles, which can be gradually converted by annealing from metallic (CrO 2) to insulating (Cr 2O 3) state. | Session 11: Disordered Systems |
| 150 | Spin excitation spectrum in strong disorder spin system using spectrum bifurcation renormalization group | Hu, Hong-Ye; Jin, Hui-Ke; You, Yizhuang | We developed a numerical tool called spectrum bifurcation renormalization group(SBRG) to study strong disordered quantum magnet. | Session 11: Disordered Systems |
| 151 | Enhanced non-collinear magnetic phase in mixed anisotropy antiferromagnet | Morley, Sophie; Roy, Sujoy; Lederman, David | We argue that an AFM skyrmionic-like phase is stabilised in this mixed anisotropy system which is further enhanced upon proximity to a high spin orbit heavy metal. | Session 11: Disordered Systems |
| 152 | Domain wall dynamics in metallic and insulating ferrimagnets | Caretta, Lucas; Rosenberg, Ethan; Fakhrul, Takian; Oh, Se-Hyeok; Lee, Dong-Kyu; Buettner, Felix; Gargiani, Pierluigi; Valvidares, Manuel; Kim, Se Kwon; Ross, Caroline; Lee, Kyung-Jin; Beach, Geoffrey | Research has primarily focused on the study of chiral solitons in metallic systems, where heavy metal underlayers provide a large spin-orbit torque and an interfacial DMI. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 153 | Universal high-speed dynamics of distorted bubble skyrmions in an uncompensated amorphous ferrimagnet | Litzius, Kai; Buettner, Felix; Wittmann, Angela; Zhou, Wei; Ma, Chung; Graefe, Joachim; Traeger, Nick-André; Finizio, Simone; Suzuki, Daniel; Huang, Siying; Caretta, Lucas; Huang, Mantau; Quessab, Yassine; Nembach, Hans; Riley, Grant; Shaw, Justin; Kent, Andrew; Schuetz, Gisela; Poon, Joseph; Beach, Geoffrey | We find that all 1D spin textures exhibit velocity saturation at ~300 m/s in agreement with the 1D model, while all fully enclosed spin textures, even if significantly distorted, reach >500 m/s. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 154 | Chiral Edge Currents for ac Driven Skyrmions in Confined Pinning Geometries | Reichhardt, Charles; Reichhardt, Cynthia | We show that ac driven skyrmion lattices in a weak pinning channel confined by regions of strong pinning exhibit edge transport carried by skipping orbits while skyrmions in the bulk of the channel undergo localized orbits with no net transport. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 155 | Antiferromagnet-based Neuromorphics using dynamics of topological charges | Zhang, Shu; Tserkovnyak, Yaroslav | In this work, we propose a new candidate for neuromorphic hardware based on the dynamics of topological charges in an antiferromagnet. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 156 | Three-dimensional current-induced magnetic hopfion dynamics | Zang, Jiadong; Liu, Yizhou | Here, we study the current-induced dynamics of a magnetic hopfion in 3D space. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 157 | Skyrmions Diffusion enabling stochastic computing | Klaeui, Mathias | We track the trajectories of skyrmions and from the dependence of their mean-square-displacement (MSD) on time, we can identify motion by diffusion and obtain the diffusion constant [2]. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 158 | Skyrmion Pinball and Topological Sorting | Vizarim, Nicolas; Reichhardt, Charles; Reichhardt, Cynthia; Venegas, Pablo | In this work we simulate the dynamic behavior of skyrmions under the influence of a square lattice of obstacles [1,2]. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 159 | Quantum Depinning of a Magnetic Skyrmion | Psaroudaki, Christina; Loss, Daniel | We investigate the quantum depinning of a weakly driven skyrmion out of an impurity potential in a mesoscopic magnetic insulator. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 160 | Thermal Decay of a Single Néel Skyrmion via Helicity Slip in a Nanodisk | Sisodia, Naveen; Muduli, Pranaba | By analyzing the time-varying oscillations of the in-plane and out-of-plane magnetization under the influence of the thermal field, we identified the presence of two skyrmion eigenmodes with frequencies differing by an order of magnitude– a low-frequency mode associated with gyration of skyrmion core, and a high-frequency breathing mode associated with the oscillations of the skyrmion radius. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 161 | Electron Induced Massive Dynamics of Magnetic Domain Walls | Hurst, Hilary; Galitski, Victor; Heikkilä, Tero | We study the effect of conduction electrons on domain walls (DWs) in metallic, ferromagnetic nanowires. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 162 | Fast, low-power defect-induced polarity switching of a magnetic vortex core | Mehrnia, Mahdi; Trimble, Jeremy; Heinonen, Olle; Berezovsky, Jesse | We excite vortices in thin permalloy disks with a magnetic field pulse, and observe the dynamic response using 3D time-resolved Kerr microscopy. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 163 | Energy Storage in Spin System via Vortices | Jones, Dalton; Zou, Ji; Tserkovnyak, Yaroslav | Here we propose to store energy in the topological texture of an XY ferromagnetic or antiferromagnetic annulus with easy plane anisotropy. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 164 | Current-driving skyrmion motion in inhomogeneous films | Wang, Xiang Rong; Yuan, Huaiyang; Gong, Xin | In this talk, I will discuss current-driven skyrmion motion in disordered films. | Session 12: Dynamics of Skyrmions and Chiral Magnetic Textures |
| 165 | Transport spin polarization of Pt/ferromagnetic insulator bilayers | Osofsky, Michael; Prestigiacomo, Joseph; Li, Peng; Suzuki, Yuri | In this presentation we show that spin polarized carriers are indeed present in Pt films of various thicknesses that were deposited on magnesium aluminum ferrite (MAFO) using point contact Andreev scattering. | Session 13: Electron Transport in Magnetic Materials |
| 166 | Strong transverse spin current generation in bulk ferromagnetic materials | Nair, Rohit; Gupta, Kriti; Yuan, Zhe; Bauer, Gerrit; Kelly, Paul | For Py we find a spin Hall angle (SHA) of 4.8% compared to a value of 5% we calculate for platinum at room temperature [4]. | Session 13: Electron Transport in Magnetic Materials |
| 167 | Electric current control of spin helicity in an itinerant helimagnet | Jiang, Nan; Nii, Yoichi; Arisawa, Hiroki; Saitoh, Eiji; Onose, Yoshinori | Here we show that the helicity can be controlled by the magnetic field and electric current, and probed by the second-harmonic resistivity, which is sensitive to the chiral symmetry breaking, in an itinerant longitudinal helimagnet MnP. | Session 13: Electron Transport in Magnetic Materials |
| 168 | Experimental tests of spin transport models in organic semiconductors | Popli, Henna; Wang, Jingying; Liu, Xiaojie; Lafalce, Evan; Tennahewa, Taniya; Malissa, Hans; Vardeny, Valy; Boehme, Christoph | We have executed such experiments and do not observe such quenching, which shows that spin-transport is neither due to propagation of charge carriers nor due to spin-transfer between weakly coupled charge carriers. | Session 13: Electron Transport in Magnetic Materials |
| 169 | Magneto-transport in half metallic CrO2 nanowires with spin texture | Qian, Lijuan; Chen, Wenzhe; Xiao, Gang | In this work, we study the magneto-transport of spin textures in epitaxial half-metallic CrO 2 nanowires. | Session 13: Electron Transport in Magnetic Materials |
| 170 | Non-local voltage measurements with wide F/I/N tunnel contacts are strongly affected by generation of circular electric currents | Bazaliy, Yaroslaw; Ramazashvili, Revaz | Here we show that while circular electric currents are indeed suppressed by the tunnel barrier, the voltage modifications persist, may be significant, and have to be accounted for in the data analysis. | Session 13: Electron Transport in Magnetic Materials |
| 171 | Magnetotransport in amorphous cobalt silicon and amorphous cobalt germanium thin films | Fuchs, Christopher; Bouma, Dinah Simone; Chen, Zhanghui; Bruni, Frank; Everhardt, Arnoud; Corbae, Paul; Reynolds, Neal; Wang, Lin-Wang; Hellman, Frances | A comparative study of a-Co xSi 1-x and a-Co xGe 1-x thin films has been performed for 0.4<x<0.7. | Session 13: Electron Transport in Magnetic Materials |
| 172 | Two transient time in the charge and spin current | Chao, Sung Po; Chebrolu, Narasimha Raju | Using magnetic tunnel junction formed by two leads made of ferromagnetic metals and a thin insulating barrier, we study its time depedent charge and spin current following a square voltage pulse. | Session 13: Electron Transport in Magnetic Materials |
| 173 | Sublattice Magnetization Driven Planar and Anomalous Hall Effect in β-W/Gdx(FeyCo1-y)1-x Heterostructures | Johnson, Anthony; Negusse, Ezana; Anyumba, Dan; McAmont, Deandre; Budhani, Ramesh | Here we present measurements of anomalous Hall (AH) and planar Hall (PH) voltages in β -W/Gd x(Fe yCo 1-y) 1-x bilayer films across the sublattice magnetization compensation point and the temperature at which the magnetic anisotropy changes from in-plane to out-of-plane configuration. | Session 13: Electron Transport in Magnetic Materials |
| 174 | Chirality-induced Spin Selectivity in a Two-terminal Semiconductor Device | Liu, Tianhan; Wang, Xiaolei; Wang, Hailong; Shi, Gang; Gao, Fan; Feng, Honglei; Deng, Haoyun; Hu, Longqian; Lochner, Eric; Schlottmann, Pedro; Von Molnar, Stephan; Li, Yongqing; Zhao, Jianhua; Xiong, Peng | 1,2 Here, we report direct evidence of CISS in two-terminal devices of heterojunctions of (Ga,Mn)As/AHPA-L molecules/Au. | Session 13: Electron Transport in Magnetic Materials |
| 175 | Resistivity Minimum in Dilute Itinerant Magnets | Wang, Zhentao; Batista, Cristian | In this work, we investigate the robustness of the RKKY-induced resistivity upturn against site dilution. | Session 13: Electron Transport in Magnetic Materials |
| 176 | Nonequilibrium noise measurements using hBN tunnel barriers | Zhao, Xuanhan; Chen, Liyang; Zhou, Panpan; Natelson, Douglas | Here we report initial nonequilibrium charge current noise measurements in a variety of tunnel junctions prepared using hBN as monolayer tunnel barriers and strong spin hall angle materials as electros. | Session 13: Electron Transport in Magnetic Materials |
| 177 | Theory of nonlinear Hall effects: modified semiclassics from quantum kinetics | Xiao, Cong; Du, Zongzheng; Niu, Qian | We propose a modified Boltzmann nonlinear electric-transport framework which differs from the nonlinear generalization of the linear Boltzmann formalism by a contribution that has no counterpart in linear response. | Session 13: Electron Transport in Magnetic Materials |
| 178 | Spin valves with exfoliated 2D materials: MoS2 | Galbiati, Marta; Godel, Florian; Vecchiola, Aymeric; Zatko, Victor; Tatay, Sergio; Galceran, Regina; Mañas-Valero, Samuel; Piquemal-Banci, Maëlis; Martin, Marie-Blandine; Forment-Aliaga, Alicia; Coronado, Eugenio; Dlubak, Bruno; Seneor, Pierre | Here, we will show successful fabrication of NiFe/MoS 2/Co MTJs thanks to an in-situ fabrication process leading to the highest results reported so far for MTJs based on TMDCs 2D family [2]. | Session 13: Electron Transport in Magnetic Materials |
| 179 | Coherent Resonant Tunneling through Double Metallic Quantum-Well States | LU, Yuan; Tao, Bingshan; Wan, Caihua; Tang, Ping; Feng, Jiafeng; Wei, Hongxiang; Wang, Xiao; Andrieu, Stéphane; Yang, Hongxin; Chshiev, Mairbek; Devaux, Xavier; Hauet, Thomas; Montaigne, Francois; Mangin, Stephane; Hehn, Michel; Lacour, Daniel; Han, Xiufeng | This study presents a comprehensive understanding of the resonant tunneling mechanism in MTJ with multiple QWs, which is essential for future development of new spintronic devices operating in the quantum tunneling regime. | Session 13: Electron Transport in Magnetic Materials |
| 180 | Magneto-Ionic Control of Heterostructures and Interfaces | Liu, Kai | In studies of cuprates, we show a simple, scalable approach to tune superconductivity [4]. | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 181 | Tuning Electrochemical Response in Ion-Gel-Gated La1-xSrxCoO3-δ Films via Sr-doping and strain | CHATURVEDI, VIPUL; Postiglione, William; Yu, Biqiong; Tabis, Wojciech; Hameed, Sajna; Biniskos, Nikolaos; Zhou, Hua; Zhang, Zhan; Greven, Martin; Leighton, Chris | Here, we present a study of the Sr-doping and strain dependence of the ion-gel gate response of La 1-xSr xCoO 3-δ (LSCO) films (0 < x < 0.7), using transport, magnetometry, and operando synchrotron X-ray diffraction. | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 182 | Insight into the Electronic Phase Separation in Perovskite Manganites: The Role of Charge-Orbital Ordering in the Interface Region | Wang, Zhe; Wu, Ruqian | Using density functional theory calculations, we investigated the charge-orbital ordering (COO) in both the AFM and FM/AFM interface regions of La 1-xSr xMnO3 (LSMO). | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 183 | Engineering Magnetic Interactions in Complex Oxide Heterostructures | Kane, Alexander; Feng, Mingzhen; Ahlm, Nolan; Li, Binzhi; Byers, J.; Chopdekar, Rajesh; Shafer, Padraic; N’Diaye, Alpha; Browning, Nigel; Lauter, Valeria; Mehta, Apurva; Arenholz, Elke; Takamura, Yayoi | We find that the proportion of the Co 2+ ion-rich LSCO layer and magnitude of exchange bias shift depends sensitively on parameters such as individual layer thicknesses, epitaxial strain state, BO6 octahedral tilt pattern of the underlying substrate, and stacking order of the layers. | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 184 | High temperature magnetism and charge ordering in multiferroic (LuFeO3)m/(LuFe2O4)1 (m = 3, 7, 9) | Fan, Shiyu; Das, Hena; Smith, Kevin; R’ebola, Alejandro; Mundy, Julia; Brooks, Charles; Holtz, Megan; Ramesh, Ramamoorthy; Muller, David; Schlom, Darrell; Fennie, Craig; McGill, Stephen; Musfeldt, Janice | We combined optical spectroscopy, magnetic circular dichroism, and first principles calculations to uncover the microscopic origin of the high temperature magnetism in multiferroic superlattices (LuFeO 3) m/(LuFe 2O 4) 1, as well as the charge ordered state in the m = 3 case. | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 185 | Tunable Perpendicular Magnetic Anisotropy in Multiferroic Oxides | Lu, Xuezeng; Rondinelli, James | Here we present design rules to realize electric-field control of perpendicular magnetic anisotropy (PMA) utilizing hybrid improper ferroelectricity by scaffolding simple perovskite oxides into ultrashort period superlattices, (ABO 3) 1/(A’BO 3) 1, and in multiferroic AA’BB’O 6 double perovskites. | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 186 | Prediction of a Giant Magnetoelectric Cross-Caloric Effect Around a Tetracritical Point in Multiferroic SrMnO3 | Edström, Alexander; Ederer, Claude | We study the magnetoelectric and electrocaloric response of strain-engineered, multiferroic SrMnO 3, using a phenomenological Landau theory with all parameters obtained from first-principles-based calculations. | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 187 | Effects of Three-Dimensional Strain on LaCoO3 Thin Films | Rodriguez, Ronaldo; Joshi, Toyanath; Belanger, David; Lederman, David | Effects of Three-Dimensional Strain on LaCoO3 Thin Films | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 188 | Emergent antiferromagnetism in diamagnetically substituted pseudospin-1/2 iridate thin film | Yang, Junyi; Hao, Lin; Cui, Qi; Lin, Jiaqi; Horak, Lukas; Karapetrova, Jenia; Kim, Jong Woo; Ryan, P.; Dean, Mark; Cheng, Jinguang; Liu, Jian | Combined with physical properties measurements and synchrotron-based x-ray diffraction and resonant x-ray magnetic scattering, we can resolve its G-type antiferromagnetic structure and further elucidate the structural modulation of its magnetic properties. | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 189 | Weyl semimetal thin film Eu1-xSmxTiO3 on LSAT (001): field-polarized long-range order and interfacial ferromagnetism | Porter, Zach; Need, Ryan; Ahadi, Kaveh; Zhao, Yang; Xu, Zhijun; Kirby, Brian; Lynn, Jeffrey; Stemmer, Susanne; Wilson, Stephen | Here we investigate the interplay between magnetism and transport behavior by studying the evolution of magnetic order in thin film samples of biaxially strained and electron-doped EuTiO 3 under an applied field. | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 190 | Emergent Ferromagnetism in Protonated CaRuO3 | Shen, Shengchun; Yu, Pu | Here we report the emergence of an itinerant ferromagnetic state from a paramagnetic metallic CaRuO 3 through electrically induced protonation during ionic liquid gating. | Session 14: Emergent Magnetism in Oxide Films and Heterostructures |
| 191 | Z2xZ2 magnetic domains and magnetic moment disproportionation in the spin-orbit Mott insulator Sr2IrO4 | Kim, Bumjoon; Park, Sunwook; Kim, Hoon; Kim, J.-W.; Subedi, Alaska | In this talk, I will discuss on a new aspect of pseudospins; they show propensity to spontaneously disproportionate and lead to rich magnetic structures where symmetrically equivalent sites are decorated with magnetic moments of different magnitudes. | Session 15: Emergent magnetism in correlated electron systems |
| 192 | Exploring magnetic frustration in a square-lattice metallic system: spin fluctuations in 15% Fe-doped CaCo2As2 | Ueland, Benjamin; Li, Bing; Sapkota, Aashish; Nediadath Sathyanadhan, Sangeetha; Johnston, David; Goldman, Alan; Perring, Toby; Kreyssig, Andreas; McQueeney, Robert | Instead of the walls of magnetic fluctuations found for x = 0, we rather find ferromagnetic-like fluctuations emerging from zone centers that, depending on the energy, is quickly suppressed with increasing momentum transfer. | Session 15: Emergent magnetism in correlated electron systems |
| 193 | Nonreciprocal directional dichroism effect in Ni3TeO6 in the toroidal geometry | Park, Kiman; Kim, Heung-Sik; Yokosuk, Michael; Yang, Junjie; Kim, Jaewook; Goryca, Mateusz; Crooker, Scott; Haule, Kristjan; Cheong, Sang-Wook; Vanderbilt, David; Musfeldt, Janice | We focus on the toroidal geometry where polarization is perpendicular to the chiral spin arrangement, and light is propagating orthogonal to both. | Session 15: Emergent magnetism in correlated electron systems |
| 194 | Magnetic structure in square cupola compound Ba(TiO)Cu4(PO4)4: 31P NMR Study | Stern, Raivo; Heinmaa, Ivo; Rästa, Riho; Kimura, Kenta; Kimura, Tsuyoshi | From K vs χ plot we determined hyperfine field values H a hf = 765 mT/μ B and H c hf = 740 mT/μ B for magnetic field oriented along a- and c-axis, respectively. | Session 15: Emergent magnetism in correlated electron systems |
| 195 | The Origin of Ising Magnetism in Ca3Co2O6 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 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 15: Emergent magnetism in correlated electron systems |
| 196 | Finite, disordered chains of local and correlated moments in transition metal oxides | Simonson, Jack; Franco, Cristian; Wustrow, Allison; Baccarella, Alicia; Umana, Jaylyn; Burgos, Francisco; Steinke, Lucia; Dooryhee, Eric; Aronson, Meigan; Neilson, James | We report the results of in situ diffraction experiments probing the synthetic pathways that yield high quality single crystals of these compounds. | Session 15: Emergent magnetism in correlated electron systems |
| 197 | Complex magnetism and magnetic compensation in metal tellurate (Mn,Ni)3TeO6 | Won, Choongjae; Cheong, Sang-Wook | From magnetic susceptibility, and specific heat measurements, we discover ferrimagnetic transition and magnetic compensation state. | Session 15: Emergent magnetism in correlated electron systems |
| 198 | High-energy nonreciprocal directional dichroism in a chiral magnet | Yokosuk, Michael; Kim, Heung-Sik; Hughey, Kendall; Kim, Jaewook; Stier, Andreas; O’Neal, Kenneth; Yang, Junjie; Crooker, Scott; Haule, Kristjan; Cheong, Sang-Wook; Vanderbilt, David; Musfeldt, Janice | In a significant conceptual advance, we use first principles methods to analyze how the Ni 2+ d-to-d on-site excitations develop magnetoelectric character and present a microscopic model that unlocks the door to theory-driven discovery of chiral magnets with nonreciprocal properties. | Session 15: Emergent magnetism in correlated electron systems |
| 199 | Probing Spin-Excitaions above the Ground State of 1T-TaS2 | Silber, Itai; Kimchi, Itamar; Graf, David; Kanigel, Amit; Dagan, Yoram | We analyse the low temperature specific heat data and torque magnetometry measurements to isolate the contribution of the spin excitations to the magnetization from the large background response. | Session 15: Emergent magnetism in correlated electron systems |
| 200 | Competition of itinerant magnetic states in SrCo2As2 from RPA spin susceptibility | Nedic, Ana-Marija; Christensen, Morten Holm; Lee, Yongbin; Fernandes, Rafael; McQueeney, Robert; Ke, Liqin; Orth, Peter | Here, we perform a fully itinerant analysis of the magnetic properties of these materials based on a tight-binding model obtained from DFT calculations for the bandstructure. | Session 15: Emergent magnetism in correlated electron systems |
| 201 | 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 15: Emergent magnetism in correlated electron systems |
| 202 | Theoretical Prediction of Bulk Rashba Effect in Pyroelectric Antiferromagnet BiCoO3 | Yamauchi, Kunihiko; Barone, Paolo; Picozzi, Silvia | Theoretical Prediction of Bulk Rashba Effect in Pyroelectric Antiferromagnet BiCoO3 | Session 15: Emergent magnetism in correlated electron systems |
| 203 | Fermion Hubbard model on non-bipartite lattices: flux problem, gauge fields and emergent chirality | Zheng, Wayne | We prove this conclusion for Hubbard interacting fermions by means of a generalized reflection positivity technique. | Session 15: Emergent magnetism in correlated electron systems |
| 204 | Scanned-probe study of spin pumping from Y3Fe5O12 into two-dimensional materials using ferromagnetic resonance force microscopy | Wu, Guanzhong; Wang, Dongying; Muzzio, Ryan; Cheng, Yang; Cao, Guixin; Watanabe, Kenji; Taniguchi, Takashi; Lau, Chun Ning; Yang, Fengyuan; Singh, Simranjeet; Katoch, Jyoti; Bockrath, Marc; Hammel, P Chris | Here we report a study of spin pumping in YIG/graphene heterostructures using local, force detected ferromagnetic resonance (FMR). | Session 15: Emergent magnetism in correlated electron systems |
| 205 | Localized gap states in oxides and their anti-doping | Malyi, Oleksandr; Zunger, Alex | We find that this is a generic behavior for a class of materials and find inverse-design principles for detecting such materials. | Session 15: Emergent magnetism in correlated electron systems |
| 206 | Charge disorder induced magnetic order | Hou, Jinning; Tan, Yuting; Ku, Wei | We propose a scenario of inducing magnetic order via charge disorder in systems with coexisting local moment and itinerant degrees of freedom. | Session 15: Emergent magnetism in correlated electron systems |
| 207 | Magnetic avalanches induced by magnetic sweep rate in a cluster glass | Chikara, Shalinee; Chern, Gia-Wei; Harrison, Neil; Singleton, John; Civale, Leonardo; Mitchell, John; Zapf, Vivien | We develop a model effectively showing that the magnetic interactions between the clusters are controlled by the magnetic field sweep rate. | Session 15: Emergent magnetism in correlated electron systems |
| 208 | The Role of Charge Doping in High Entropy Perovskite Oxides | Mazza, Alessandro; Sharma, Yogesh; Skoropata, Elizabeth; Zhang, Wenrui; Heitmann, Thomas; Charlton, Timothy; Freeland, John; Ward, Thomas | We will present our recent stabilization of single crystal epitaxial films of the ABO 3 perovskite, La(Cr 0.2Mn 0.2Fe 0.2Co 0.2Ni 0.2)O 3. | Session 15: Emergent magnetism in correlated electron systems |
| 209 | Classification of materials with phonon angular momentum and microscopic origin of angular momentum | Coh, Sinisa | We group materials into five symmetry classes and determine in which of these classes will phonons generically carry angular momentum. | Session 15: Emergent magnetism in correlated electron systems |
| 210 | The Role of Oxygen Vacancies in the Magnetic and Electronic Structure of La0.7Sr0.3MnO3 | Romestan, Zachary; Garcia-Castro, A. C.; He, Xu; Holcomb, Mikel; Romero, Aldo | In our investigation, we consider the role of oxygen vacancies on the magnetic, electronic, and structural properties of La 0.7Sr 0.3MnO 3-δ within the DFT+U formalism. | Session 15: Emergent magnetism in correlated electron systems |
| 211 | Insulating antiferromagnetism in VTe | Parker, David; Sanjeewa, Liurukara; Wang, Xiaoping; Cooper, Valentino; Liu, Yaohua; Sefat, Athena | We report a comprehensive theoretical and experimental study on the vanadium monotelluride VTe, which crystallizes in the NiAs hexagonal structure. | Session 15: Emergent magnetism in correlated electron systems |
| 212 | On-chip terahertz characterization of the antiferromagnet CaFe2O4 | Heligman, Daniel; Resnick, Rachel; Zhang, Lunyong; Kim, Jae Wook; Cheong, Sang-Wook; Valdes Aguilar, Rolando | We report on the magnetic excitations of the antiferromagnet CaFe 2O 4 as measured with time-domain terahertz spectroscopy via an on-chip device. | Session 15: Emergent magnetism in correlated electron systems |
| 213 | Ferrimagnetism in High Entropy Transition Metal Spinel Oxides | Johnstone, Graham; Hallas, Alannah | In this talk we will present a robust characterization of their magnetic and electronic ground states via heat capacity and resistivity measurements. | Session 15: Emergent magnetism in correlated electron systems |
| 214 | Giant Electric Field Modulation of Magnetism in Ferrimagnetic Heusler Heterostructures | SUN, QILONG; Kwon, Sohee; Kioussis, Nicholas | In this talk, we will present predictions of ab initio electronic structure calculations of the VCMA of Ir/Mn 3Ga/MgO heterostructures, in which the ultrathin ferrimagnetic Mn 3Ga has the tetragonal DO 22 structure. | Session 15: Emergent magnetism in correlated electron systems |
| 215 | Hybrid Purification and Sampling Approach for Thermal Quantum Systems | Chen, Jing; Stoudenmire, Miles | We propose an algorithm combining two methods for studying finite-temperature quantum systems with tensor networks. | Session 15: Emergent magnetism in correlated electron systems |
| 216 | Fermi surface investigation of intermetallic La2Pt3Ge5 | Green, Elizabeth; Klotz, Johannes; Goetze, Kathrin; Foerster, Tobias; Uhlarz, Marc; McCollam, Alix; Neu, Jennifer; Siegrist, Theo; Gottschall, Tino; Wosnitza, Joachim; Wang, Kefeng; Petrovic, Cedomir | To fill this void, we performed de Haas-van Alphen effect measurements on La 2Pt 3Ge 5, which was reported to have the highest critical temperature in the R 2T 3X 5 family, Tc ~ 8.1 K [1], though the presence of superconductivity is a topic of debate [2]. | Session 15: Emergent magnetism in correlated electron systems |
| 217 | High-field resonant torsion magnetometry as a probe of magnetic phases in honeycomb lattice Na2IrO3 | Pocs, Christopher; Leahy, Ian; Siegfried, Peter; Cao, Gang; Shekhter, Arkady; McDonald, Ross; Lee, Minhyea | Our analysis of the magnetoanisotropy reveals unusual field and angular dependence at high field and a possible signature of a field-driven transition to a quantum disordered state, providing strong evidence for a potential quantum spin liquid phase at high field. | Session 15: Emergent magnetism in correlated electron systems |
| 218 | Quasi-2D magnon identification in antiferromagnetic FePS3 via magneto-Raman spectroscopy | Simpson, Jeffrey; McCreary, Amber; Mai, Thuc; McMichael, Robert; Douglas, Jason; Butch, Nicholas; 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 15: Emergent magnetism in correlated electron systems |
| 219 | Electronic Relaxation Rates in Clean Metalic Ferromagnets | Amarel, James; Belitz, Dietrich; Kirkpatrick, Theodore | To answer this question we present an asymptotically exact evaluation of the Kubo formula. | Session 16: Ferromagnetic dynamics |
| 220 | Latent state in time-resolved nonlinear magnon scattering in thin films | Qu, Tao; Venugopal, Aneesh; Etheridge, James; Crowell, Paul; Victora, Randall | The theory is a hybrid time-resolved model which uses an analytical equation of motion based on the Holstein-Primakoff transformation, and realistic micromagnetic simulation, in order to capture the magnon number change caused by the scattering. | Session 16: Ferromagnetic dynamics |
| 221 | A semi-analytical approach for studying the dynamics of magnetic vortices with Dzyaloshinskii-Moriya interactions | Quispe Flores, Carla; Livesey, Karen; Buchanan, Kristen | Here we introduce a Landau-Lifshitz based diagonalization (LLD) method to calculate the effects of the DMI on radial-type modes in circular disks. | Session 16: Ferromagnetic dynamics |
| 222 | Theory for the unconventional dynamics of ferrimagnets | Kim, Se Kwon | In this talk, we will discuss the recent theoretical progress on the ensuing novel dynamics of ferrimagnets. | Session 16: Ferromagnetic dynamics |
| 223 | Local spin current probe of the global electrodynamics of ultrathin magnetic heterostructure electrofoils | Mayes, David; Grossnickle, Maxwell; Lohmann, Mark; Li, Junxue; Aji, Vivek; Shi, Jing; Song, Justin; Gabor, Nathaniel | Here, we demonstrate the first technique capable of imaging the electric field using spin current as a local probe in Pt/YIG magnetic heterostructures. | Session 16: Ferromagnetic dynamics |
| 224 | On the Field Dependence of Spin-Lattice Relaxation | Van Tol, Johan | We studied the temperature dependence of the relaxation in the high magnetic field regime for a variety of paramagnetic spin systems. | Session 16: Ferromagnetic dynamics |
| 225 | Spin dynamics in the density functional: problems and perspectives | Antropov, Vladimir | We discuss general dynamics in the charge-current-magnetization density functional theory. | Session 16: Ferromagnetic dynamics |
| 226 | Nonclassical magnetization reversal by quantum spin torque of many-electron pulse: A time-dependent density matrix renormalization group study | Petrovic, Marko; Plechac, Petr; Feiguin, Adrian; Nikolic, Branislav | Using the time-dependent density matrix renormalization group (tDMRG) method, we study nonclassical effects in the spin-transfer torque (STT) exerted by the spin-polarized electron current on a one-dimensional quantum Heisenberg ferromagnetic chain. | Session 16: Ferromagnetic dynamics |
| 227 | Efficient Method for the Simulation of high-temperature Spin Dynamics | Starkov, Grigorii; Fine, Boris | We propose a new hybrid quantum-classical method for the first-principles calculation of solid FIDs, which is based on simulating a large quantum spin lattice by a small cluster of quantum spins coupled to an environment of interacting classical spins via a correlation-preserving scheme. | Session 16: Ferromagnetic dynamics |
| 228 | Physical realization of complex dynamical pattern formation in magnetic spinwave active feedback rings | Anderson, Justin; Janantha, Praveen; Alcala, Diego; Wu, Mingzhong; Carr, Lincoln | We report the clean experimental realization of cubic-quintic complex Ginzburg-Landau physics in a single driven, damped system. | Session 16: Ferromagnetic dynamics |
| 229 | An efficient method of spin dynamics for long-range interacting systems | Hinokihara, Taichi; Sasaki, Munetaka; Miyashita, Seiji | In this presentation, we introduce TQMC+SCO and discuss why this method works. | Session 16: Ferromagnetic dynamics |
| 230 | Mechanism for a chemical potential of nonequilibrium magnons in parametric parallel pumping | Arakawa, Naoya | In this talk, I will discuss how nonequilibrium magnons in the parametric parallel pumping acquire a finite chemical potential [1]. | Session 16: Ferromagnetic dynamics |
| 231 | Generalized magnetoelectronic circuit theory and spin memory loss | Kovalev, Alexey; Baez Flores, Giovanni; Belashchenko, Kirill; Schilfgaarde, Mark | Here, we develop a general magnetoelectronic circuit theory and generalize the concept of spin mixing conductance accounting for various mechanisms responsible for spin-flip scattering . | Session 16: Ferromagnetic dynamics |
| 232 | X-ray Orbital Angular Momentum from Artificial Antiferromagnets containing Edge Dislocations | Chen, Xiaoqian; Woods, Justin; Koch, Roland; Farmer, Barry; Mazzoli, Claudio; Hu, Wen; Chopdekar, Rajesh; Kwok, Wai-Kwong; De Long, Lance; Roy, Sujoy; Hastings, Jeffrey | Here we show that a permalloy, square ASL with a double edge dislocation exhibits an ordered antiferromagnetic ground state, unlike square ASLs with a single dislocation. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 233 | Enhancement of magnetoelectric coupling by insertion of Co atomic layer into Fe3Si/BaTiO3(001) interfaces identified by first-principles calculations | Hamazaki, Yasunari; Gohda, Yoshihiro | In this study, we examine interface ME coupling at Fe 3Si/Co/BaTiO 3 heterostructures by using first-principles calculations based on density functional theory to clarify the influence of atomic-layer insertion on the ME effect. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 234 | Long-range exchange coupling in Co/Nb/Co trilayers | González, Victor; Vargas, Nicolas; Mercone, S; Patino, Edgar; Schuller, Ivan; Ramirez, Juan | In this work, we performed vector model Vibrating Sample Magnetometer (V-VSM), Magneto-optic Kerr effect and magnetoresistance (MR) measurements as a function of temperature from 1K up to room temperature. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 235 | Reduced exchange interactions in thin perpendicularly magnetized magnetic tunnel junction free layers and spin-transfer reversal mechanisms | Beik Mohammadi, Jamileh; Kardasz, Bartek; Wolf, Georg; Chen, Yizhang; Pinarbasi, Mustafa; Kent, Andrew | I will present the results of a systematic experimental study of the exchange constant of CoFeB free layers with perpendicular anisotropy. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 236 | Strain-driven spin-Hall antiferromagnetic memory for 180° switching | Parthasarathy, Arun; Rangarajan, Nikhil; Rakheja, Shaloo | We propose 180° reversal of the Néel order by leveraging both piezoelectric strain and spin-Hall effect in PMN-PT/NiO/Pt system. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 237 | Inter-particle magnetic correlations and fluctuations in assemblies of Fe3O4 nanoparticles | Chesnel, Karine; Rackham, Johnathon; Walker, Colby; Pratt, Brittni; Griner, Dalton; Harrison, Roger; Transtrum, Mark | [3] Additionally, we show a model based on NP chains, which we use to fit the XRMS data, suggesting ferromagnetic ordering at high external magnetic field, and the emergence of antiferromagnetic ordering near remanence. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 238 | Modeling Magnetic Correlations in magnetite Nanoparticle Assemblies Using X-ray Magnetic Scattering Data | Rackham, Johnathon; Chesnel, Karine; Transtrum, Mark; Harrison, Roger; Kotter, Steve; Pratt, Brittni | The model utilizes twelve variable parameters and we used a Levenberg-Marquardt algorithm to find the best fit parameters. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 239 | Strain Control of Magnetism in LaCoO3 | Guo, Er-Jia | In this talk, we report strong coupling between the structural degree of freedom and spin state transition in the LaCoO 3 (LCO) thin films and heterostructures. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 240 | "Boundary Conditions in Granular Magnetic Nanostructures with Dzyaloshinski- Moriya Interactions" | Ullah, Ahsan; Balasubramanian, Balamurugan; Zhang, Wenyong; Sellmyer, David; Skomski, Ralph | "Boundary Conditions in Granular Magnetic Nanostructures with Dzyaloshinski- Moriya Interactions" | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 241 | The effect of x-ray illumination on magnetic domain memory in [Co/Pd] / IrMn multilayers | Walker, Colby; Parkes, Mason; Keavney, David; Fullerton, Eric; Chesnel, Karine | We are studying the effect that illumination by coherent x-rays may have on magnetic domain memory (MDM) in a [Co / Pd] / IrMn multilayers. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 242 | Quantification of mixed Bloch/Néel character in a Co/Pd DMI multilayer thin film with Lorentz transmission electron microscopy. | Garlow, Joseph; Pollard, Shawn; Beleggia, Marco; Yang, Hyunsoo; Zhu, Yimei | Here, we present an approach to quantify the mixed Bloch-Néel character of domain walls stabilized by the Dzyaloshinskii-Moriya interaction in Co/Pd multilayers. | Session 17: Interfaces, Coupling, and Ultra-Thin Materials |
| 243 | Kondo effect in a spinon metal | Zorko, Andrej; Gomilsek, Matjaz; Zitko, Rok; Klanjsek, Martin; Pregelj, Matej; Zhang, Qingming | Kondo effect in a spinon metal | Session 18: Kagome Lattice |
| 244 | Dynamics of jammed spin liquid on the kagome bilayer | Zhang, Sheng; Saha, Preetha; Zhang, Depei; Lee, Seunghun; Chern, Gia-Wei | In this work, we study the dynamical properties of an effective Hamiltonian that incorporates the collinear/coplanar tendency through a biquadratic spin interaction. | Session 18: Kagome Lattice |
| 245 | Electron-nuclear hyperfine coupling in quantum kagome antiferromagnets from first-principles calculation and a reflection of the defect effect | Zhang, Shunhong; Zhou, Yi; Liu, Feng; Liu, Zheng | Applying this method to a supercell containing Cu-Zn defects enables us to map out the variation and distribution of HFC at different nuclear sites. | Session 18: Kagome Lattice |
| 246 | Thermal conductivity of the quantum spin liquid candidate herbertsmithite | Bourgeois-Hope, Patrick; Lefloïc, Pierre; Doiron-Leyraud, Nicolas; Taillefer, Louis; Mendels, Philippe; Velazquez, Matias | Thermal conductivity of the quantum spin liquid candidate herbertsmithite | Session 18: Kagome Lattice |
| 247 | Diverse S=1/2 distorted kagome Hamiltonians in titanium fluorides | Jeschke, Harald; Nakano, Hiroki; Sakai, Toru | We determine the connection between highly frustrated kagome based Hamiltonians and a recently synthesized family of materials containing Ti 3+ S = 1/2 ions [1]. | Session 18: Kagome Lattice |
| 248 | The origin of trimerized phase in S=1 kagome magnet Na2Ti3Cl8 | Paul, Arpita; Chung, Chia-Min; Changlani, Hitesh; Birol, Turan | Along with the nearest neighbor Heisenberg and biquadratic exchanges, we propose a new exchange term fourth order in spins – ring exchange that does not originate from spin-orbit coupling and involves simultaneous hopping of electrons from one site to its two neighboring sites. | Session 18: Kagome Lattice |
| 249 | Dynamical properties of site-diluted Heisenberg antiferromagnetic on the kagome bilayer | Saha, Preetha; Zhang, Depei; Lee, Seung-Hun; Chern, Gia-Wei | We present spin dynamical simulations of the site-diluted Heisenberg antiferromagnet with nearest neighbor interactions on a quasi-2D kagome bilayer. | Session 18: Kagome Lattice |
| 250 | Search for simplex solid and spin liquid phases in highly frustrated S=1 antiferromagnets | Changlani, Hitesh | In this talk, we show that both these criteria may be too restrictive. | Session 18: Kagome Lattice |
| 251 | Magnetoresistance Study of Kagome Artificial Spin Ice with Fibonacci Distortions | Woods, Justin; Farmer, Barry; Wang, Yong-Lei; Kwok, Wai-Kwong; De Long, Lance | We study the effects of continuous symmetry breaking on the magnetoresistive behavior of frustrated Kagome (alt. | Session 18: Kagome Lattice |
| 252 | Tuning the Two-step Melting of Magnetic Order in Dipolar Kagome Ice by Quantum Fluctuations | Wang, Yao; Humeniuk, Stephan; Wan, Yuan | In this talk, we show that one may tune such melting processes by quantum fluctuations. | Session 18: Kagome Lattice |
| 253 | Non-coplanar magnetic order and topological magnons in tripod kagome antiferromagnet Yb3Mg2Sb3O14 | Dun, Zhiling; Benton, Owen; Bai, Xiaojian; Butch, Nicholas; Zhou, Haidong; Mourigal, Martin | Using elastic neutron scattering measurements, we show that one of the tripod kagome compounds, Yb 3Mg 2Sb 3O 14, orders into a strongly non-coplanar magnetic ground state below 0.88 K which calls for large antisymmetric exchanges. | Session 18: Kagome Lattice |
| 254 | Valence bond phases of herbertsmithite and related copper kagome materials | Norman, Michael; Laurita, Nicholas; Hsieh, David | Here, we consider known and possible distortions of this mineral class, along with related copper kagome oxides and fluorides, relate these to possible valence bond patterns, and comment on their relevance to the physics of these interesting materials. | Session 19: Kagome and Triangular Lattice Magnetism |
| 255 | Evidence for a parity broken monoclinic ground state in the S = 1/2 Kagome antiferromagnet Herbertsmithite | Laurita, Nicholas; Ron, Alon; Han, Jeong Woo; Lee, Jongseok; Scheie, Allen; Sheckelton, John; Smaha, Rebecca; He, Wei; Wen, Jiajia; Lee, Young; Norman, Michael; Hsieh, David | Here we comprehensively resolve the ground state point group symmetries of the prototypical Kagomé SL candidate ZnCu 3(OH) 6Cl 2 (Herbertsmithite) using a combination of optical ellipsometry and wavelength-dependent multi-harmonic optical polarimetry. | Session 19: Kagome and Triangular Lattice Magnetism |
| 256 | Magnetism on ideal triangular lattices in NaBaYb(BO3)2 | Ghasemi, Alireza; Guo, Shu; Cava, Robert; Broholm, Collin | Here we study NaBaYb(BO 3) 2, which has two different triangular layers of Yb; one sandwiched between two layers of Na, the other between two layers of Ba. | Session 19: Kagome and Triangular Lattice Magnetism |
| 257 | Magnetic and charge susceptibilities in the half-filled triangular lattice Hubbard model | Li, Shaozhi; Gull, Emanuel | In this talk, I present momentum-dependent magnetic and charge susceptibilities of the half-filled two-dimensional triangular Hubbard model in the metallic, Mott insulating, and crossover regions of parameter space, using the dual fermion approach. | Session 19: Kagome and Triangular Lattice Magnetism |
| 258 | Topological flat bands in the 3d transition metal-based kagome lattices | Kang, Min Gu; Fang, Shiang; Ye, Linda; Po, Hoi Chun; Denlinger, Jonathan; Jozwiak, Chris; Bostwick, Aaron; Rotenberg, Eli; Kaxiras, Efthimios; Checkelsky, Joseph; Comin, Riccardo | Here, we report the observation of topological flat bands in series of 3 d transition metal-based kagome compounds. | Session 19: Kagome and Triangular Lattice Magnetism |
| 259 | Localized states of the topological flat bands in the 3d transition metal kagome compound | Fang, Shiang; Kang, Min Gu; Ye, Linda; Po, Hoi Chun; Denlinger, Jonathan; Jozwiak, Chris; Bostwick, Aaron; Rotenberg, Eli; Checkelsky, Joseph; Comin, Riccardo; Kaxiras, Efthimios | To elucidate the nature of the electronic structure, we perform the ab initio density functional theory calculations. | Session 19: Kagome and Triangular Lattice Magnetism |
| 260 | Colossal transverse response from non-centrosymmetric kagome ferromagnets | Asaba, Tomoya; Thomas, Sean; Bauer, Eric; Ronning, Filip | Here, we will present the giant transverse response from uranium kagome ferromagnets. | Session 19: Kagome and Triangular Lattice Magnetism |
| 261 | Wigner solid of charge transfer excitons in Yin-Yang Kagome lattice | Sethi, Gurjyot; Wu, Congjun; Liu, Feng | We demonstrate that photo absorption between two enantiomorphic topological flat bands, as hosted in a Yin-Yang Kagome lattice, provides a perfect platform for the realization of excitonic Wigner crystallization. | Session 19: Kagome and Triangular Lattice Magnetism |
| 262 | Three-colored quantum scars in the kagome quantum antiferromagnet | Changlani, Hitesh; Pal, Arijeet | In this work we investigate quantum scar eigenstates and the associated dynamical properties for the two dimensional kagome antiferromagnet. | Session 19: Kagome and Triangular Lattice Magnetism |
| 263 | A new quantum spin liquid candidate with Co-based triangular lattice | Zhong, Ruidan; Guo, Shu; Xu, Guangyong; Xu, Zhijun; Cava, Robert | Here, we report a previously unreported compound, Na2BaCo(PO4)2, a geometrically frustrated system with effective spin-1/2 local moments for Co2+ ions on an isotropic two-dimensional (2D) triangular lattice. | Session 19: Kagome and Triangular Lattice Magnetism |
| 264 | SU(4) antiferromagnetism on the triangular lattice | Keselman, Anna; Savary, Lucile; Balents, Leon | In particular, we study the SU(4) antiferromagnetic “Heisenberg” model on the triangular lattice, both in the classical limit and in the quantum regime. | Session 19: Kagome and Triangular Lattice Magnetism |
| 265 | Stability of chiral spin liquid phase of the triangular lattice Hubbard model with hopping anisotropy | Szasz, Aaron; Motruk, Johannes | To better connect to experimental results in such spin liquid candidates, in this work we investigate the stability of the chiral spin liquid against anisotropy in the hopping and show that the phase survives, providing further support for the applicability of our findings to experiments. | Session 19: Kagome and Triangular Lattice Magnetism |
| 266 | Dynamical DMRG study of spin excitation dynamics in triangular lattice spin-1/2 antiferromagnet | Sota, Shigetoshi; Shirakawa, Tomonori; Yunoki, Seiji; Tohyama, Takami | By using the dynamical DMRG method, here we investigate the spin excitation dynamics of the triangular lattice spin-1/2 antiferromagnetic Heisenberg model. | Session 19: Kagome and Triangular Lattice Magnetism |
| 267 | Spin properties of triangular-lattice rare-earth compounds K2CsYb(PO4)2 and K2CsEr(PO4)2 | Ge, Luwei; Huang, Qing; Dun, Zhiling; Zhou, Haidong; Mourigal, Martin | Here we report our detailed study of two such rare-earth-based compounds K 2CsYb(PO 4) 2 and K 2CsEr(PO 4) 2, where the magnetic ions form equilateral triangular lattices and where site mixing/distortion effects are absent. | Session 19: Kagome and Triangular Lattice Magnetism |
| 268 | Imaging antiferromagnetic domains of PdCrO2 | Lee, Changmin; Little, Arielle; Dusad, Ritika; Zhakina, Elina; McGuinness, Philippa; Sunko, Veronika; Khim, Seunghyun; Hicks, Clifford; Mackenzie, Andrew; Orenstein, Joseph | Here we spatially resolve the antiferromagnetic domains of PdCrO 2 using a novel temperature-modulated birefringence imaging setup. | Session 19: Kagome and Triangular Lattice Magnetism |
| 269 | Strain effects on bulk α-RuCl3 and α-RuCl3/graphene bilayer | Biswas, Sananda; Li, Ying; Kaib, David; Riedl, Kira; Winter, Stephen; Knolle, Johannes; Valentí, Roser | We discuss the effect of electronic proximity of α-RuCl 3 to graphene which gives rise to an insulator to metal transition in α-RuCl 3 with the Fermi energy located close to the bottom of the upper Hubbard band of the t 2g manifold. | Session 20: Kitaev Magnetism: Experiment |
| 270 | Magneto-oscillations in the Thermal Conductivity of Kitaev Magnet RuCl3 | Czajka, Peter; Gao, Tong; Lin, Jingjing; Hirschberger, Max; Banerjee, Arnab; Lampen-Kelley, Paula; Yan, Jiaqiang; Mandrus, David; Nagler, Stephen; Ong, N. Phuan | Here, we report a striking new observation in the system’s thermal transport physics. | Session 20: Kitaev Magnetism: Experiment |
| 271 | Kitaev-Γ-Heisenberg exchange in Ni3+ honeycomb magnet NaNi2BiO6-δ | Scheie, Allen; Broholm, Collin; Ross, Kate; Stavropoulos, Panagiotis Peter; Seibel, Elizabeth; Rodriguez-Rivera, Jose; Tang, Joel; Li, Yi; Kee, Hae-Young; Cava, Robert | We present experimental and theoretical evidence for bond-dependent Kitaev-Γ-Heisenberg exchange in honeycomb Ni 3+ magnet NaNi 2BiO 6-δ. | Session 20: Kitaev Magnetism: Experiment |
| 272 | Intermediate magnetic phase of the proximate Kitaev system in the in-plane magnetic field | Kim, Beom Hyun; Sota, Shigetoshi; Shirakawa, Tomonori; Son, Young-Woo; Yunoki, Seiji | In the study, we verify that a simple magnetic model with a ferromagnetic Kitaev interaction and antiferromanetic third nearest neighbor Heisenberg interaction ( K- J 3 model) can give successfully the intermediate phase in the in-plane magnetic field. | Session 20: Kitaev Magnetism: Experiment |
| 273 | Analysis of the high-field evolution of magnetic excitations in α-RuCl3 | Kaib, David; Winter, Stephen; Valenti, Roser | We theoretically analyze these and compare the response of realistic anisotropic models. | Session 20: Kitaev Magnetism: Experiment |
| 274 | Half-integer quantized thermal Hall conductance without out-of-plane magnetic field in a chiral spin liquid state of 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 | Half-integer quantized thermal Hall conductance without out-of-plane magnetic field in a chiral spin liquid state of α-RuCl3 | Session 20: Kitaev Magnetism: Experiment |
| 275 | New Kitaev Magnet with Compelling Thermodynamic Evidence of Proximity to the Kitaev Spin-Liquid | Bahrami, Faranak; Lafargue-Dit-Hauret, William; I. Lebedev, Oleg; Movshovich, Roman; Yang, Hung-Yu; Broido, David; Rocquefelte, Xavier; Tafti, Fazel | Recent theoretical studies predict two potential signatures of a QSL at finite temperatures: a scaling behavior of thermodynamic quantities and a two-step release of the magnetic entropy. | Session 20: Kitaev Magnetism: Experiment |
| 276 | Quasiparticle Relaxation Dynamics in the Kitaev Hyperhoneycomb β-Li2IrO3 | Kissin, Peter; Ruiz, Alejandro; Kim, Peter; Poore, Max; Rai, Ananya; Vranas, Mayia; Analytis, James; Frano, Alex; Averitt, Richard | We study quasiparticle relaxation dynamics in single crystals of the three dimensional Kitaev hyperhoneycomb β-Li 2IrO 3 (LIO) using time-resolved optical pump-probe spectroscopy (OPPS). | Session 20: Kitaev Magnetism: Experiment |
| 277 | A rare-earth Kitaev material candidate YbCl3 | Emmanouilidou, Eve; Xing, Jie; Cao, Huibo; Hu, Chaowei; Liu, Jinyu; Graf, David; Ramirez, Arthur; Chen, Gang; Ni, Ni | Here we propose a new Kitaev material candidate YbCl 3. | Session 20: Kitaev Magnetism: Experiment |
| 278 | Field-angle-resolved specific heat measurements in the Kitaev material α-RuCl3 | Tanaka, Ohei; Harasawa, Ryuhei; Mizukami, Yuta; Konczykowski, Marcin; Kurita, Nobuyuki; Tanaka, Hidekazu; Moon, Eun-Gook; Kasahara, Yuichi; Matsuda, Yuji; Hashimoto, Kenichiro; Shibauchi, Takasada | Here, we report specific heat measurements under in-plane magnetic fields up to 7 T on electron-irradiated α-RuCl 3 single crystals, in which a systematic suppression of T N and H* was observed. | Session 20: Kitaev Magnetism: Experiment |
| 279 | Ruthenium Substitution in Beta-Lithium Iridate | Vranas, Mayia; Ruiz, Alejandro; Frandsen, Benjamin; Acharya, Arani; Nagarajan, Vikram; Lopez, Gilbert; Nair, Nityan; Breznay, Nicholas; Islam, Zahirul; Frano, Alex; Analytis, James | In this work, we present thermodynamic, resonant X-ray diffraction, and muon spin relaxation studies on ruthenium-doped beta-lithium iridate (β-Li 2Ru xIr 1-xO 3). | Session 20: Kitaev Magnetism: Experiment |
| 280 | Confinement of fractional excitations in the 3D Kitaev magnet β-Li2IrO3 | Wang, Yiping; Ruiz, Alejandro; Analytis, James; Burch, Kenneth | We identified the polarization and temperature dependence of the magnons and fractional excitations in Raman. | Session 20: Kitaev Magnetism: Experiment |
| 281 | Evolution of magnetic phases in beta-Li2IrO3 under high magnetic fields | Nagarajan, Vikram; Modic, Kimberly; Singleton, John; Chan, Mun; Wang, Kevin; Analytis, James | In this talk, we describe how these phases evolve under strong magnetic fields using the state-of-the art technique of resonant torsion magnetometry. | Session 20: Kitaev Magnetism: Experiment |
| 282 | High-resolution RIXS as a probe of Kitaev Magnetic Excitations in β-Li2IrO3 | Ruiz, Alejandro; Allen, Anthony; Nagarajan, Vikram; Korelek, Jake; Upton, Mary; Kim, Jongho; Breznay, Nicholas; Analytis, James; Casa, Diego; Frano, Alex | In this work, we used a high-resolution RIXS spectrometer (FWHM=10meV) to measure the low-energy spin excitations in β-Li2IrO3 under a 2T applied field. | Session 20: Kitaev Magnetism: Experiment |
| 283 | Anamolous, Anisotropic and Extended Nonlinear Susceptibility in a-RuCl3 | Shivaram, Bellave; Holleis, Ludwig; Prestigiacomo, Joseph; Fan, Zhije; Nishimoto, Satoshi; Yan, Jiaqiang; Banerjee, Arnab; Osofsky, Michael; Van den Brink, Jeroen; Chern, Gia-Wei; Mandrus, David; Nagler, Stephen | In proximate Kitaev a-RuCl3, we establish a radically new behavior of the nonlinear susceptibility hitherto not established. | Session 20: Kitaev Magnetism: Experiment |
| 284 | Understanding the Magnetic-Field Anisotropy of Kitaev Materials | Rayyan, Ahmed; Gordon, Jacob; Kee, Hae-Young | To this end, we present the classical and quantum phase diagrams of the extended anisotropic Kitaev model under different magnetic field directions. | Session 21: Kitaev Magnetism: Theory |
| 285 | Majorana-magnon crossover by a magnetic field in the Kitaev model | Motome, Yukitoshi; Yoshitake, Junki; Nasu, Joji; Kato, Yasuyuki | Here we present unbiased large-scale numerical results for the Kitaev model in a wide range of magnetic field and temperature, obtained by continuous-time quantum Monte Carlo simulations. | Session 21: Kitaev Magnetism: Theory |
| 286 | Spin-one Kitaev model, same but different? | Khait, Ilia; Kee, Hae-Young; Kim, Yong-Baek | We study various properties of the spin-one Kitaev model on honeycomb lattices consisting of two and three-leg ladder geometries using density matrix renormalization group. | Session 21: Kitaev Magnetism: Theory |
| 287 | Vacancy-induced Low-energy States in the Kitaev Model | Kao, Wen-Han; Knolle, Johannes; Moessner, Roderich; Perkins, Natalia | In this work, we demonstrate that a finite density of random vacancies gives rise to a remarkable pile up of low-energy states and possibly explains the experimental findings in H 3LiIr 2O 6. | Session 21: Kitaev Magnetism: Theory |
| 288 | Field induced phases of the Kitaev-Γ ladder | Sorensen, Erik; Catuneanu, Andrei; Gordon, Jacob; Kee, Hae-Young | Employing large-scale numerical techniques, we study the KG model in a two-leg ladder system in the presence of a magnetic field for the entire phase space of the KG model, finding both disordered and incommensurate ordered phases near the antiferromagnetic Kitaev region. | Session 21: Kitaev Magnetism: Theory |
| 289 | Field-Driven Phenomena in 2-d and 3-d Kitaev Magnets | Hickey, Ciaran; Trebst, Simon; Gohlke, Matthias; Berke, Christoph | Kitaev’s honeycomb model is an exactly solvable spin model that realises a quantum spin liquid ground state, with fractionalised excitations in the form of Majorana fermions and plaquette flux excitations. | Session 21: Kitaev Magnetism: Theory |
| 290 | Magnetic Field Induced Competing Phases in Spin-Orbital Entangled Kitaev Magnets | Chern, Li Ern; Kaneko, Ryui; Lee, Hyun-Yong; Kim, Yong-Baek | In this work, we provide a semiclassical analysis of the relevant theoretical models, which enable us to treat large system sizes approximating the thermodynamic limit. | Session 21: Kitaev Magnetism: Theory |
| 291 | Numerical Studies of the Kitaev-Gamma Model Under a Magnetic Field | Gordon, Jacob; Catuneanu, Andrei; Kee, Hae-Young | Here we present results obtained with ED to address these open questions. | Session 21: Kitaev Magnetism: Theory |
| 292 | Vison crystals in an extended Kitaev model on the Honeycomb latttice | Batista, Cristian; Zhang, Shangshun; Wang, Zhentao; Halasz, Gabor | I will introduce an extension of the Kitaev honeycomb model by including four-spin interactions that preserve the local gauge structure and hence the integrability of the original model. | Session 21: Kitaev Magnetism: Theory |
| 293 | Partitioning the phase diagram of pyrochlore and Kitaev magnets using graph theory | Liu, Ke; Greitemann, Jonas; Jaubert, Ludovic; Yan, Han; Shannon, Nicholas; Pollet, Lode | In this talk, I will show that the combination of a kernel method and graph partitioning theory provides an efficient framework to unravel the complex phase diagram of frustrated magnets. | Session 21: Kitaev Magnetism: Theory |
| 294 | Quantum Spin Liquid and Proximate Magnetic Orders in Magnets with Spin-Orbit Coupling | Nanda, Animesh; Dhochak, Kusum; Bhattacharjee, Subhro | In this talk, I shall report our theoretical calculations about the nature of such unconventional phase transition in a class of experimentally relevant Hamiltonians in the honeycomb magnets. | Session 21: Kitaev Magnetism: Theory |
| 295 | Pressure Induced Quantum Spin Liquids in Extended Kitaev Model | Wang, Jiucai; Liu, Zheng-Xin | We show that these gapless spin liquids can be distinguished experimentally. | Session 22: Kitaev Model Theory and Experiment |
| 296 | Transport and chaos in lattice Sachdev-Ye-Kitaev models | Guo, Haoyu; Gu, Yingfei; Sachdev, Subir | We find two distinct regimes of linear-in-temperature (T) resistivity, and describe the crossover between them. | Session 22: Kitaev Model Theory and Experiment |
| 297 | Low-rank Sachdev-Ye-Kitaev Models | Kim, Jaewon; Cao, Xiangyu; Altman, Ehud | Motivated by recent works on atom-cavity realizations of fast scramblers, and on Cooper pairing in non-Fermi liquids, we study a family of solvable variants of the (q=4) Sachdev-Ye-Kitaev model in which the rank and eigenvalue distribution of the coupling matrix J are tuneable. | Session 22: Kitaev Model Theory and Experiment |
| 298 | Soft modes in the complex Sachdev-Ye-Kitaev model | Gu, Yingfei; Kitaev, Alexei; Sachdev, Subir; Tarnopolsky, Grigory | We discuss soft modes in the Sachdev-Ye-Kitaev model for complex fermions with large N flavors and a global U(1) charge. | Session 22: Kitaev Model Theory and Experiment |
| 299 | Dynamical and thermal magnetic properties of the Kitaev spin liquid candidate α-RuCl3 | Laurell, Pontus; Okamoto, Satoshi | In this work we investigate dynamical and thermal magnetic properties of proposed effective Hamiltonians. | Session 22: Kitaev Model Theory and Experiment |
| 300 | Thermal and magnetoelastic properties of a-RuCl3 in the field-induced low temperature states | Schoenemann, Rico; Imajo, Shusaku; Weickert, Franziska; Takano, Yasumasa; Nagler, Stephen; Mandrus, David; Jaime, Marcelo | In order to identify the nature of the phase transitions below T N and to map the phase diagram as a function of magnetic field, we conducted measurements of the magnetocaloric effect in pulse magnetic fields as well as thermal expansion and magnetostriction measurements in static fields up to 15 T. | Session 22: Kitaev Model Theory and Experiment |
| 301 | Multipartite Entanglement in the Kitaev Honeycomb Model | Lambert, James; Sorensen, Erik | We study the Kitaev honeycomb model, a prototype of QSL physics in two dimensions, using the quantum Fisher information (QFI), which is both experimentally accessible and well defined at finite temperature. | Session 22: Kitaev Model Theory and Experiment |
| 302 | Spin-one Kitaev-Heisenberg model on a two-dimensional honeycomb lattice | Dong, Xiaoyu; Sheng, Donna | We study the Kitaev-Heisenberg model with a spin-1 local degree of freedom on a two-dimensional honeycomb lattice numerically by density matrix renormalization group method. | Session 22: Kitaev Model Theory and Experiment |
| 303 | Microscopic route to magnetic anisotropy in higher-spin honeycomb lattice: application to CrI3 | Stavropoulos, Panagiotis Peter; Kee, Hae-Young | We present the microscopic origin of frustrated S=3/2 model terms in d 3 systems. | Session 22: Kitaev Model Theory and Experiment |
| 304 | Two-Magnon Bound States in the Kitaev Model in a [111]-Field | Pradhan, Subhasree; Patel, Niravkumar; Trivedi, Nandini | Here, we analyze the low field and high field phases and phase transitions in terms of single- and two-magnon excitations using exact diagonalization (ED) and density matrix renormalization group (DMRG) methods. | Session 22: Kitaev Model Theory and Experiment |
| 305 | Phase diagram of the spin-1/2 Kitaev-Gamma chain and emergent “partial" SU(2) symmetry | Yang, Wang; Nocera, Alberto; Tummuru, Tarun; Kee, Hae-Young; Affleck, Ian | In the gapless phase, the low energy theory is described by an emergent SU(2)$_1$ Wess-Zumino-Witten (WZW) model though the exact symmetry group is discrete. | Session 22: Kitaev Model Theory and Experiment |
| 306 | Ab initio quantum chemical study of magnetic interactions in the honeycomb Kitaev-Heisenberg systems Cu2IrO3 and H3LiIr2O6 | Eldeeb, Mohamed; Yadav, Ravi; Bogdanov, Nikolay; Ray, Rajyavardhan; Nishimoto, Satoshi; Van den Brink, Jeroen; Hozoi, Liviu | The magnetic interactions in honeycomb iridium oxide compounds are studied using quantum chemical wavefunction-based methods. | Session 22: Kitaev Model Theory and Experiment |
| 307 | Kitaev material candidates beyond the Iridates | Ramanathan, Arun; Daum, Marcus; Mourigal, Martin; La Pierre, Henry | In this talk, I will present our work on a new lanthanide-based, Kitaev material candidate with a potential Jeff=1/2 ground state. | Session 22: Kitaev Model Theory and Experiment |
| 308 | Ferrimagnetism and anisotropic phase tunability by magnetic fields in Na2Co2TeO6 | Yao, Weiliang; Li, Yuan | With small training fields, we find a canonical ferrimagnetic behavior below 27 K, which reveals additional Neel-type order of canted moments. | Session 22: Kitaev Model Theory and Experiment |
| 309 | 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 22: Kitaev Model Theory and Experiment |
| 310 | Remarkable magnetic field effects in quasi-one dimensional Ising-like antiferromagnet BaCo2V2O8 studied by neutron scattering | Grenier, Beatrice | I will present our results on the dispersion spectrum in this exotic phase together with its magnetic field dependence, in the light of the TLL theory [4]. | Session 23: Low-Dimensional Magnetism and Single Molecule Magnets |
| 311 | Comparison of magnetic disorder at low temperature in Ca3Co2O6 and Ca3Co1.9Zn0.1O6 | White, Benjamin; Mantilla, Alexander; Jesenovec, Jani | We performed a calorimetry study of Ca 3Co 2O 6 and Ca 3Co 1.9Zn 0.1O 6 in order to compare their entropic responses at low temperature. | Session 23: Low-Dimensional Magnetism and Single Molecule Magnets |
| 312 | Electronic and magnetic properties of the cluster magnet Ba3LaRu2O9 | Chen, Qiang; Clune, Amanda; Ma, Jie; Cheng, Jinguang; Taddei, Keith; Dela Cruz, Clarina; Stone, Matthew; Kolesnikov, Alexander; Musfeldt, Janice; Zhou, Haidong; Aczel, Adam | We present magnetic susceptibility and inelastic neutron scattering data supporting an unusual spin-3/2 per dimer electronic ground state that cannot be understood in a local moment picture. We also present bulk characterization, muon spin relaxation, neutron diffraction, and inelastic neutron scattering data that are indicative of an ordered state arising from a quasi-2D frustrated lattice of Ru dimer building blocks. | Session 23: Low-Dimensional Magnetism and Single Molecule Magnets |
| 313 | Large positive zero field splitting in the cluster magnet Ba$_3$CeRu$_2$O$_9$ | Aczel, Adam; Chen, Qiang; Fan, Shiyu; Taddei, Keith; Stone, Matthew; Kolesnikov, Alexander; Cheng, Jinguang; Musfeldt, Janice; Zhou, Haidong | We present the synthesis and magnetic characterization of a polycrystalline sample of the 6H-perovskite Ba$_3$CeRu$_2$O$_9$, which consists of Ru dimers based on face-sharing RuO$_6$ octahedra. | Session 23: Low-Dimensional Magnetism and Single Molecule Magnets |
| 314 | Lanthanide-based single molecule magnets through the prism of ab-initio calculations | LeGuennic, Boris | This presentation will focus on recent applications of such state-of-the-art computational protocols in the understanding of Ln-based SMMs behaviors. | Session 23: Low-Dimensional Magnetism and Single Molecule Magnets |
| 315 | Nature of hyperfine interactions in TbPc2 single-molecule magnets: Multireference ab-initio study | Wysocki, Aleksander; Park, Kyungwha | Recent experimental studies reported the tunability of these properties by changes of chemical environments or by application of external stimuli for device applications. | Session 23: Low-Dimensional Magnetism and Single Molecule Magnets |
| 316 | A first-principles study of the phase stability and electronic properties of monolayer Vanadium-based Janus dichalcogenides | Dey, Dibyendu; Botana, Antia | We investigate the vibrational and electronic properties of 2D van der Waals Vanadium-based Janus dichalcogenides (VSSe, VSeTe, VSTe) at the monolayer level in both 2H and 1T phases by using first-principles calculations. | Session 23: Low-Dimensional Magnetism and Single Molecule Magnets |
| 317 | Strong anisotropic spin-dipole coupling in electron-withdrawing Br-based system Cu2(OH)3Br | Basu, Tathamay; Zhang, Heda; Zhao, Zhiying; Ke, Xianglin | Here, we have investigated the detailed dielectric behavior of single crystalline compound in different orientations. | Session 23: Low-Dimensional Magnetism and Single Molecule Magnets |
| 318 | Tailoring Non-Innocence in a Family of 2D Coordination Solids | Pedersen, Kasper | Focussing on a family of isostructural, quadratic 2D coordination solids, MX 2(pyrazine) 2, we show (1) how the occurrence of redox events between the metal ion, M, and the pyrazine ligand may be controlled by chemical tuning and external stimuli, and (2) how the macroscopic materials properties (magnetic, conductive, optical) relate to the redox state of the coordination solid. | Session 23: Low-Dimensional Magnetism and Single Molecule Magnets |
| 319 | First-principles calculations on the surfaces and interfaces of SmFe12 | Shiozawa, Tomoharu; Ainai, Yuta; Tatetsu, Yasutomi; Gohda, Yoshihiro | We performed first-principles calculations on the surfaces and interfaces of Nd 2Fe 14B and SmFe 12, and analyzed the structural stability and magnetic properties. | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 320 | Additive manufacturing of PPS bonded NdFeB magnets to design a Halbach array for polarized neutron reflectivity experiments | Lamichhane, Tej | We will discuss in detail about the challenges associated in developing the prototype Halbach ring magnet and validate the concept of variable magnetic contrast in neutron measurements. | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 321 | First-principles Study on Crystalline Nd-Fe alloys as Candidate Structures for Grain-Boundaries in Nd-Fe-B Sintered Magnets | Ainai, Yuta; Tatetsu, Yasutomi; Terasawa, Asako; Gohda, Yoshihiro | Therefore, in this study, we investigated Nd-rich alloys with Fe as a candidate structures for GBs. | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 322 | Low-Dimensional Hard Magnetic Materials | Liu, J | A systematic study on size dependent Curie temperature of the L1 0 structured FePt ferromagnetic nanoparticles with size from 2 to 15 nanometers reveals the finite size effect in the tiny ferromagnets. | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 323 | High-throughput search for rare-earth free permanent magnets | Vishina, Alena; Vekilova, Olga; Herper, Heike; Eriksson, Olle | We propose to apply a high-throughput approach to the search of RE free permanent magnets. | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 324 | Development of magnetic hardness in melt-spun Mn50Bi50-xMx alloys (M = Mg, In, Sn, Sb, Bi) subjected to magnetic-field annealing | Gabay, Alexander; Hadjipanayis, George | Here, we report how alloying with M = Mg, In, Sn and Sb affects the phases, the texture and the hard magnetic properties of field-annealed magnets prepared from the melt-spun Mn 50Bi 50-xM x alloys. | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 325 | Tuning of spin reorientation temperature of SmFeO3: Role of exchange interaction between 4f & 3d electrons | KHAN, AZAM; Ahlawat, Anju; satapathy, Srinibas; Karnal, Ak | Here we present the control on magnetic anisotropy of SmFeO 3 by the means of Tm 3+doping at Sm 3+site. | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 326 | Self-biased nanocrystalline barium hexaferrite thick films formed by aerosol deposition for microwave devices | Johnson, Scooter; Park, Dong-Soo; Shin, Sanghoon; Qadri, Syed; Kabos, Pavel; coakley, kevin; Gorzkowski, Edward | We use AD to deposit BaM in a non-magnetically biased (NMB) and in a 4 kOe bias field (MB). | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 327 | Investigation of fabrication method of L10-FeCo multilayer film | Ito, Hisaaki; Miyashita, Takuya; Kumagai, Takuya; Miyamachi, Toshio; Komori, Fumio; Koganezawa, Tomoyuki; Ohkochi, Takuo; Kotsugi, Masato | For establishing the fabrication method of L1 0-FeCo, we here investigated the growth temperature ( T s) dependence of (7 ML-FeCo/3 ML-Ni buffer) 3 films fabricated by pulsed laser deposition. | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 328 | Influence of W thickness on Perpendicular Magneto-crystalline Anisotropy of Pt/Co/W(111) Superlattices | Ho, Huynh Thi; Kim, Sanghoon; Rhim, Sonny H.; Hong, Soon Cheol | Influence of W thickness on Perpendicular Magneto-crystalline Anisotropy of Pt/Co/W(111) Superlattices | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 329 | An efficient model for modelling Barkhausen noise in PMA thin films | Skaugen, Audun; Laurson, Lasse | We present an efficient, principled numerical model which reduces the description of the PMA thin film to a single one-dimensional domain wall, by integrating over the coordinate perpendicular to the domain wall. | Session 24: Magnetic Anisotropy: Hard and Soft Materials |
| 330 | Optical characterization of in-plain spin texture in 10-nm-scale Neel-type magnetic domain wall | Kim, Dongha; Kim, Kab-Jin; Seo, Min-Kyo | We present that dark-field longitudinal magneto-optical Kerr effect (MOKE) microscopy can visualize the in-plain spin texture of the subwavelength-scale Neel-type magnetic domain wall. | Session 25: Magnetic Characterization and Imaging |
| 331 | Microsphere-assisted super-resolution magneto-optic imaging | Vogel, Michael; Hendriks, Arthur; Te Velthuis, Suzanne; Hoffmann, Axel | Here we report on wide-field MOKE (Magneto-Optical Kerr effect) measurements harnessing this resolution enhancement. | Session 25: Magnetic Characterization and Imaging |
| 332 | Development of a Multichannel Atomic Magnetometer for Parallel Magnetic Resonance Imaging | Kim, Young Jin; Savukov, Igor | In this talk, we will describe the basic principle and the design of our ULF MRI system. | Session 25: Magnetic Characterization and Imaging |
| 333 | Ionically-controlled phase separation in cobaltite heterostructures | Rippy, Geoffery; Trinh, Lacey; Kane, Alexander; Ionin, Aleksey; Lee, Micahel; 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 25: Magnetic Characterization and Imaging |
| 334 | "Magnetic Etch-a-Sketch" using the 1st-order phase transition in FeRh | Gray, Isaiah; Mei, Antonio; Tang, Yongjian; Schubert, Jürgen; Werder, Don; Bartell, Jason; Ralph, Daniel; Fuchs, Gregory; Schlom, Darrell | We demonstrate a novel approach for room-temperature rewritable magnetic patterning using the 1 st-order phase transition from antiferromagnet (AF) to ferromagnet (FM) in FeRh. | Session 25: Magnetic Characterization and Imaging |
| 335 | Novel sample preparation and detection method for magnetic resonance force imaging of electron spins | Boucher, Michael; Marohn, John | We show a new sample preparation technique which applies this coating without exposing sample radicals during metal deposition. | Session 25: Magnetic Characterization and Imaging |
| 336 | NV- center magnetometry using Bayesian statistics | Dushenko, Sergey; Ambal, Kapildeb; McMichael, Robert | In magnetometry using NV – centers, we demonstrate order-of-magnitude speed up with Bayesian experimental design as compared to conventional frequency-swept measurements. | Session 25: Magnetic Characterization and Imaging |
| 337 | Imaging nanoscale magnetization using scanning-probe magneto-thermal microscopy* | Zhang, Chi; Bartell, Jason; Karsch, Jonathan; Gray, Isaiah; Fuchs, Gregory | We present sub-100 nm spatial resolution from imaging current density around a nano-constriction. | Session 25: Magnetic Characterization and Imaging |
| 338 | Multi-axis cavity optomechanical torque characterization of magnetic microstructures and the contribution of the Einstein-de Haas effect | Losby, Joseph; Hajisalem, Ghazal; Mori, Kayte; de Oliveira Luiz, Gustavo; Sauer, Vincent; Freeman, Mark; Barclay, Paul | The approach is demonstrated through application to shape and microstructural disorder-induced magnetic anisotropies in lithographically patterned permalloy, and will have utility for the determination of important magnetic thin-film and multilayer properties including interface anisotropy and exchange bias. | Session 25: Magnetic Characterization and Imaging |
| 339 | Direct Imaging of Nanostructured Magnetic Metalattices in 3D | Liao, Chen-Ting; Rana, Arjun; Pham, Minh; Cating, Emma; Lo, Yuan Hung; Bevis, Charles; Karl, Robert; Glaid, Andrew; Nova, Nabila; Shapiro, David; Kapteyn, Henry; Yazdi, Sadegh; Osher, Stanley; Badding, John; Miao, Jianwei; Murnane, Margaret | We developed a new 3D nanoscale magnetic imaging capability that combines x-ray magnetic circular dichroism, ptychographic imaging, and vector tomography. | Session 25: Magnetic Characterization and Imaging |
| 340 | Scaling of domain cascades in stripe and skyrmion phases | Singh, Arnab; Lee, James; Avila, Karina; Chen, Yuan; Montoya, Sergio; Fullerton, Eric; Fischer, Peter; Dahmen, Karin; Kevan, Stephen; Sanyal, Milan; Roy, Sujoy | Here we report Fourier space studies of avalanches in a system exhibiting competing magnetic stripe and skyrmion phase using a soft X-ray speckle metrology technique. | Session 25: Magnetic Characterization and Imaging |
| 341 | Ultra-Short-Period Undulators for the Next Generation X-ray Free Electron Lasers | Gürel, Berkin; Polat, Omer; Gunduz Akdogan, Nilay; Akdogan, Ozan | In this work, RADIA program has been employed for the modeling of sub millimeter period undulators (20 µm < λ u < 400 µm) with three different magnet configuration; namely Up-Down (↑↓↑↓…), Halbach (Wiggler) (↑→↓←↑…) and Hybrid (→↑←↓→…). | Session 25: Magnetic Characterization and Imaging |
| 342 | Attosecond Spintronics | Schultze, Martin; Muenzenberg, Markus; Sharma, Sangeeta; Gessner, Julia | In tandem with ab-initio quantum dynamical modelling, we show how this mechanism provides simultaneous control over electronic and magnetic properties that are at the heart of spintronic functionality. | Session 26: Magnetic dynamics and magnetic switching |
| 343 | Unification of ultrafast demagnetization and switching | Zhang, Guoping; Murakami, M; Bai, Y. H.; George, Thomas; Wu, Xiaoshan | We find a way to unify them through the same model that takes into account the Heisenberg exchange between spins and spin-orbit coupling. | Session 26: Magnetic dynamics and magnetic switching |
| 344 | Ultrafast Magnetic Spectroscopy, Scattering and Full-Field Imaging Using Tabletop High Harmonic Sources | Johnsen, Peter; Gentry, Christian; Karl, Robert; Ryan, Sinead; Thurston, Jeremy; Kapteyn, Henry; Murnane, Margaret | We present spectroscopy, scattering, and full field imaging of magnetic nanostructures using EUV high harmonic sources. | Session 26: Magnetic dynamics and magnetic switching |
| 345 | Revealing angular momentum transfer channels and timescales in the ultrafast demagnetization process of ferromagnetic semiconductors | Chen, Zhanghui; Luo, Jun-Wei; Wang, Lin-Wang | Here, we unravel the laser-induced demagnetization mechanism of ferromagnetic semiconductor GaMnAs, using an efficient time-dependent density functional theory approach that enables the direct real-time snapshot of the demagnetization process. | Session 26: Magnetic dynamics and magnetic switching |
| 346 | Magnetic Entropy Dynamics in Ultrafast Demagnetization | Goharshenasanesfahani, Sahar; Smadici, Serban | Magnetic Entropy Dynamics in Ultrafast Demagnetization | Session 26: Magnetic dynamics and magnetic switching |
| 347 | Analytic modeling of switching time dynamics of monodomain ferromagnets with biaxial energy landscape | Shukla, Ankit; Parthasarathy, Arun; Rakheja, Shaloo | Assuming the macrospin model, we develop analytic models to describe the magnetization dynamics of an in-plane-anisotropy ferromagnet driven by spin-transfer-torque with spin polarization collinear to the easy axis orientation. | Session 26: Magnetic dynamics and magnetic switching |
| 348 | Elastic Properties of Encapsulation Epoxy for Vanadium Tetracyanoethylene Devices Measured Using Brillouin Light Scattering (BLS) | Nygren, Katherine; Franson, Andrew; Kurfman, Seth; Johnston-Halperin, Ezekiel; Buchanan, Kristen | The use of organic-friendly epoxy for encapsulation is a common method for protecting the organic that can easily be integrated into device fabrication processes on a large scale, and epoxies that protect the VTCNE without compromising the damping have been identified. | Session 26: Magnetic dynamics and magnetic switching |
| 349 | Overcoming the spectroscopic limitations of inelastic light scattering by sub-diffraction light confinement | Freeman, Ryan; Demidov, Vladislav; Demokritov, Sergej; Ding, Jinjun; Wu, Mingzhong; Harutyunyan, Hayk; Urazhdin, Sergei | We overcome this limitation by utilizing a nanoscale metallic antenna on yttrium iron garnet (YIG) film. | Session 26: Magnetic dynamics and magnetic switching |
| 350 | Terahertz emission from circular photogalvanic effect in bismuth thin films | Hirai, Yoshua; Yoshikawa, Naotaka; Hirose, Hana; Kawaguchi, Masashi; Hayashi, Masamitsu; Shimano, Ryo | Here, we present the observation of THz emission from bismuth thin films under near-infrared (800 nm, 1.55 eV) pulse excitation. | Session 26: Magnetic dynamics and magnetic switching |
| 351 | Ultrafast Spin Seebeck Measurements on Rare-Earth Iron Garnets | Ortiz, Victor; Gomez, Michael; Liu, Yawen; Aldosary, Mohammed; Shi, Jing; Wilson, Richard | We observe a factor of 4 difference in the magnitude of the LSSE among the different REIG samples. | Session 26: Magnetic dynamics and magnetic switching |
| 352 | Controlled nonlinear magnetic damping in spin-Hall nano-devices | Divinskiy, Boris; Urazhdin, Sergei; Demokritov, Sergej; Demidov, Vladislav | We utilize micro-focus Brillouin light spectroscopy (BLS) to demonstrate that nonlinear damping can be controlled by the ellipticity of magnetization precession. | Session 26: Magnetic dynamics and magnetic switching |
| 353 | Conductivity-Like Gilbert Damping due to Intraband Scattering in Epitaxial Iron | Khodadadi, Behrouz; Rai, Anish; Sapkota, Arjun; Srivastava, Abhishek; Nepal, Bhuwan; Lim, Youngmin; Smith, David; Mewes, Claudia; Budhathoki, Sujan; Hauser, Adam; Gao, Min; Li, Jie-Fang; Viehland, Dwight; Jiang, Zijian; Heremans, Jean; Balachandran, Prasanna; Mewes, Tim; Emori, Satoru | Here, we experimentally identify Gilbert damping that increases with decreasing electronic scattering in thin films of BCC Fe. | Session 26: Magnetic dynamics and magnetic switching |
| 354 | Manipulation of terahertz spectrum using microfabricated magnetic heterostructures | Wu, Weipeng; Lendinez, Sergi; Taghipour Kaffash, Mojtaba; Schaller, Richard; Wen, Haidan; Jungfleisch, Matthias Benjamin | Here, we demonstrate generation and control of THz radiation from microstructured Fe/Pt bilayers. | Session 26: Magnetic dynamics and magnetic switching |
| 355 | Efficient bias-driven magnetization control by orbital selection at a La0.67Sr0.33MnO3 interface | Duc Anh, Le; Yamashita, Takashi; Okamoto, Noboru; Yamasaki, Hiroki; Araki, Daisei; Seki, Munetoshi; Tabata, Hitoshi; Tanaka, Masaaki; Ohya, Shinobu | In this work, using La 0.67Sr 0.33MnO 3 (LSMO)/SrTiO 3 (STO)/LSMO magnetic tunnel junctions (MTJs), we demonstrate that a drastic change in the MA of LSMO can be induced when the chemical potential ( E F) at the LSMO/STO interface is moved between bands with different orbital symmetries. | Session 27: Magnetic interactions at complex oxide interfaces |
| 356 | Spin-orbit coupling and local magnetism at a complex oxide interface | Pribiag, Vlad | This talk will discuss low-temperature electronic transport studies of NdTiO 3/SrTiO 3 interfaces, which reveal local ferromagnetic order and strong spin-orbit interaction. | Session 27: Magnetic interactions at complex oxide interfaces |
| 357 | Interfacial control of chiral magnetic interactions and Hall effect in Iridate-manganite superlattices | Skoropata, Elizabeth; Nichols, John; Ok, Jong Mok; Chopdekar, Rajesh; Choi, Eun; 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 our progress to understand interface-induced magnetism in epitaxial 3 d/5 d iridate/manganite superlattices. | Session 27: Magnetic interactions at complex oxide interfaces |
| 358 | Spin to charge conversion in the topological insulator HgTe and in STO-based two-dimensional electron gas | Attane, Jean-Phillippe | We show that a HgCdTe barrier can be used to protect the HgTe topological surface states, leading to high conversion rates, with inverse Edelstein lengths up to 2.0±0.5 nm. | Session 27: Magnetic interactions at complex oxide interfaces |
| 359 | Symmetry Control of Emergent Magnetism in 2D Oxides and Oxide Heterostructures | Zhai, Xiaofang | In this talk, I will introduce our recent advances in understanding the emergent magnetism in 2D oxide ferromagnets and a number of magnetic oxide heterostructures, from the symmetry aspects of the oxygen sublattice, including the octahedral rotations, tilts and the oxygen vacancies. | Session 27: Magnetic interactions at complex oxide interfaces |
| 360 | σ-Dimerization of organic radicals as mechanism for strongly hysteretic magneto-strutural phase transitions | Shatruk, Michael | In this contribution, we present a few systems of σ-dimerizing organic radicals, which provide examples of magneto-structural phase transitions that occur with a large thermal or photochemical hysteresis window. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 361 | Controlling the Kinetics of Spin Transitions through Heterostructure Elasticity | Cain, John; He, Wanhong; Zhang, Jerry; Talham, Daniel; Meisel, Mark | A theoretical electroelastic model was used to guide chemical alterations, allowing the mechanism to be probed experimentally with nuclear inelastic scattering. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 362 | Microscopic theory of spin-crossover phase transition and magnetoelectric coupling | Yu, Jie-Xiang; Chen, Dian-Teng; Gu, Jie; Chen, Jia; Jiang, Jun; Zhang, Long; Zhang, Xiaoguang; Zapf, Vivien; Cheng, Hai-Ping | By constructing a molecular-scale Hamiltonian, we discovered that the Jahn-Teller-induced inter-molecular strain interaction is the key factor in both the spin-crossover phase transition and magnetoelectric behaviors. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 363 | Observation of magnetoelectric, spin-lattice, and electron-phonon coupling in multiferroic (NH4)2[FeCl5(H2O)] | Hughey, Kendall; Nam, Jisoo; Lee, Minseong; Clune, Amanda; O’Neal, Kenneth; Blockmon, Avery; Tian, Wei; Ozerov, Mykhaylo; Zapf, Vivien; Lee, Jun Hee; Musfeldt, Janice | An analysis of combined techniques demonstrates that magneto-infrared is sensitive to both spin-phonon and electron-phonon coupling. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 364 | Magneto-optical Detection of Chirality Induced Spin Selectivity in 2D Chiral Hybrid Organic-Inorganic Perovskites | Huang, Zhengjie; Bloom, Brian; Georgieva, Zheni Nikolaeva; Vetter, Eric; Waldeck, David; Sun, Dali | This class of materials possesses both the implanted chirality and the excellent photovoltaic properties, making it a promising platform that bridges opto-spintronic studies and the CISS effect. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 365 | Theoretical design of two dimensional magnetoelectrics | Dong, Shuai; Lin, Ling-Fang | Theoretical design of two dimensional magnetoelectrics | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 366 | Gate tunability of 2D antiferromagnet magnon modes | Zhang, Xiao-Xiao; Li, Lizhong; Mak, Kin Fai; Shan, Jie | In this talk, we will show how we can access and probe the collective spin-wave excitations in an antiferromagnetic bilayer CrI3, which allows us to extract magnetic anisotropy and exchange energy. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 367 | 2D ferromagnetism in porphyrin-based semiconductors | Pimachev, Artem; Nielsen, Robert; Karanovich, Anri; Dahnovsky, Yuri | We describe the electronic, transport, optical, and magnetic properties of a π-conjugated micropore polymer with three iron atoms placed in the middle of an isolated pore. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 368 | Low-Damping Ferromagnetic Resonance in Electron-Beam Patterned, High-Q Vanadium Tetracyanoethylene Magnon Cavities | Franson, Andrew; Zhu, Na; Kurfman, Seth; Chilcote, Michael; Candido, Denis; Buchanan, Kristen; Flatté, Michael; Tang, Hong; Johnston-Halperin, Ezekiel | Here we present the deposition, patterning, and characterization of V[TCNE] x thin films with lateral dimensions ranging from 1 micron to several millimeters. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 369 | Two-dimensional magnetic coordination polymers: tuning the surface and the magnetic properties. | Mañas-Valero, Samuel; Coronado, Eugenio | Here [Nature Chemistry 10, 1001, 2018 and unpublished data] we present a pre-synthetic method based on coordination chemistry that affords the isolation of crystalline molecular monolayers. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 370 | A New Mercury-based Cation Radical Salt: α-(BEDT-TTF)2Hg(SeCN)2Cl | Henderson, Alyssa; Wei, Kaya; Van Tol, Johan; Richardson, Rachael; Thirunavukkuarasu, Komalavalli; Siegrist, Theo; Schlueter, John | Here we report the synthesis of the new α-(ET) 2Hg(SeCN) 2Cl salt. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 371 | Magneto-elastic coupling in multiferroic metal-organic framework [(CH3)2NH2]Co(HCOO)3 | Thirunavukkuarasu, Komalavalli; Richardson, Rachael; Lu, Zhengguang; Huang, Nan; Smirnov, Dmitry; Mandrus, David | We will discuss our investigations and its implications. | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 372 | High throughput ab initio screening for magnetic two dimensional materials | Jiang, Xue | In this talk, I will present our theoretical design on few new types of 2D ferromagnetic materials (MBene, CrSBr, K2N, and 2D MOFs). | Session 28: Magnetism and Magnetoelectrics: Molecule-Based and 2D Materials |
| 373 | Magnetic interactions in the 2D layered van der Waals semiconductor CrPS4 | Calder, Stuart; Haglund, Amanda; Liu, Yaohua; Pajerowski, Daniel; Cao, Huibo; Williams, Travis; Garlea, Vasile; Mandrus, David | Here we present a series of neutron scattering measurements that allow the magnetic structure to be determined and exchange interactions extracted. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 374 | High Curie temperature and strain-induced spin reorientation transition in two dimensional CrPbTe3 | Khan, Imran; Hong, Jisang | We investigated the strain-induced magnetic properties of two-dimensional CrPbTe 3 (CPT) monolayer belonged to the members of Cr based two-dimensional family. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 375 | Magnetic Properties of Proton Irradiated van der Waals Magnets | Singamaneni, Srinivasa Rao; Martinez, Luis; Iturriaga, Hector; Rubyann, Olmos; Wang, Qiang; Lin, Shao; Liu, Yu; Petrovic, Cedomir | In this work, we present and discuss the magnetic properties of proton irradiated vdWs magnets such MnSiTe3 and CrSiTe3 as a function of proton fluence (10^15 to 10^18/cm^2). | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 376 | Optical Characterizations of Magnetic Phases in Two-Dimensional Ferromagnetic Semiconductor CrSBr | Lee, Kihong; Dismukes, Avalon; Telford, Evan; Dean, Cory; Zhu, Xiaoyang; Roy, Xavier | Here, we present 2D ferromagnetic semiconductor CrSBr, which possesses in-plane magnetic anisotropy and interlayer antiferromagnetic coupling. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 377 | Magnetic anisotropy of two-dimensional ferromagnetic insulator MnBi2Te4 | Li, Yang; Duan, Wenhui | Based on the density functional theory calculation, we systematically study the magnetic anisotropy of the monolayer MnBi 2Te 4, which is vital for establishing the long-range magnetic order in two-dimensional system. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 378 | Ferrimagnetic excitations in the layered hexagonal compound Mn3Si2Te6 | Stone, Matthew; Sala, Gabriele; Lin, Jiao; May, Andrew | We use super-resolution image correlation techniques to refine the resolution convolved spin-wave spectrum in order to determine the exchange interactions in this system. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 379 | Large scale synthesis of monolayer ferromagnetic Fe3GeTe2 | Roemer, Ryan; Liu, Chong; Zou, Ke | We show, by molecular beam epitaxy, the synthesis of high-quality Fe3GeTe2 (FGT) films, a promising candidate that carries ferromagnetic states at room temperature upon ionic liquid gating. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 380 | Magnetism tunability in wafer-scale few-layered van der Waals ferromagnetic Fe3GeTe2 films | Liu, Shanshan; yang, ke; Li, Zihan; Liu, Wenqing; Zhang, Enze; wu, hua; Xiu, Faxian | Here, we report the effective manipulation of magnetic properties of wafer-scale 2D ferromagnetic Fe 3GeTe 2 films by changing the sample composition and utilizing the proximity effect in ferromagnetic/antiferromagnetic heterostructures. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 381 | Magnetic interactions in two-dimensional single-layer transition-metal dichalcogenides | Shishidou, Tatsuya; Weinert, Michael | In this talk, using a density-functional spin-spiral approach [4], we address the magnetic interactions in two-dimensional TMD films in the ultrathin limit. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 382 | High Curie temperature in magnetically doped tungsten diselenide | Tiwari, Sabyasachi; Van de Put, Maarten; Soree, Bart; Vandenberghe, William | In this work, we investigate magnetism in magnetically doped WSe 2 monolayers using Density Functional Theory (DFT). | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 383 | Magnetic Response of Graphene Flakes | Deyo, Sean; Hershfield, Selman | Magnetic Response of Graphene Flakes | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 384 | Computational challenges in the characterization of magnetism for atomically precise nanographenes on noble metal substrates. | Pignedoli, Carlo Antonio; Eimre, Kristjan; Mishra, Shantanu; Beyer, Doreen; Gröning, Oliver; Ruffieux, Pascal; Fasel, Roman | I will present both, cases of non-Kekulé NGs where sublattice imbalance is responsible for magnetism, and of NGs where – despite absence of sublattice imbalance – topological frustration in the underlying π-electron network generates uncompensated radicals. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 385 | Increased Curie temperature and enhanced perpendicular magneto anisotropy of Cr2Ge2Te6/NiO heterostructure | Llacsahuanga Allcca, Andres; Idzuchi, Hiroshi; Pan, Xing-Cheng; Tanigaki, Katsumi; Chen, Yong | Here, we report increased T C and enhanced perpendicular magnetic anisotropy in Cr 2Ge 2Te 6 (CGT) flakes interfaced with antiferromagnetic insulator NiO for a wide range of CGT thicknesses (5-200 nm). | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 386 | 2D Layered Ferromagnet: the Emergence of Skyrmions in Transition Metal Dichalcogenides | Ou, Yunbo; Nemes, Norbert; Martinez, Jose; Rocci, Mirko; CHI, HANG; Larson, Daniel; Akey, Austin; Ge, Wenbo; Suri, Dhavala; Bell, David; Wu, Weida; Kaxiras, Efthimios; Moodera, Jagadeesh | In this work, utilizing molecular beam epitaxy, a stable CrTe 2, one of TMDCs, films are fabricated down to monolayer (ML) level. | Session 29: Magnetism of 2D Semiconductors, Dichalcogenides and Graphene |
| 387 | Theoretical model for direct evidence of spatial stability of Bose-Einstein condensate of magnons | Borisenko, Igor; Divinskiy, Boris; Demidov, Vladislav; Li, Gang; Nattermann, Thomas; Pokrovsky, Valery; Demokritov, Sergej | Here, we provide direct experimental evidence that magnons in a condensate exhibit repulsive interaction resulting in the condensate stabilization and propose a mechanism, which is responsible for the interaction inversion. | Session 30: Magnon and Spin Dynamics |
| 388 | Thermal Hall Effect in Collinear Antiferromagnets on a Square Lattice | Suri, Nishchay; Zhang, Yinhan; Okamoto, Satoshi; Xiao, Di | We show that the thermal Hall effect is possible in collinear antiferromagnets on a squre lattice once the magnon-phonon interaction due to the Dzyaloshinskii-Moriya interaction (DMI) is taken into account. | Session 30: Magnon and Spin Dynamics |
| 389 | Magnon contributions to dielectric constant in spiral magnets | Foggetti, Francesco; Artyukhin, Sergey | Here we model chiral domain walls in the spiral magnetic order and characterize the excitation spectrum using a model Hamiltonian describing spins interacting with polar ionic displacements. | Session 30: Magnon and Spin Dynamics |
| 390 | Goos-Hänchen effect of spin waves at heterochiral interfaces | Wang, zhenyu; Cao, Yunshan; Yan, Peng | In this work, we observe a Goos-Hänchen shift of spin waves at the heterochiral interface when the spin-wave beam is totally reflected. | Session 30: Magnon and Spin Dynamics |
| 391 | Magnon spectrum in Ferromagnet-Superconductor heterostructure | Parajuli, Bishal; Lin, Shizeng; Chien, Chih-Chun | Research on ferromagnet-superconductor heterostructures gives rise to novel quantum phases and excitations. | Session 30: Magnon and Spin Dynamics |
| 392 | Imaging spin-wave propagation and interference with electron spins in diamond | Bertelli, Iacopo; Carmiggelt, Joris; Simon, Brecht; Pothoven, Coosje; Aarts, Jan; Van der Sar, Toeno; Yu, Tao; Bauer, Gerrit; Blanter, Yaroslav | Here we use electron spins in diamond to probe coherent spin-wave transport in the magnetic insulator yttrium-iron-garnet (YIG). | Session 30: Magnon and Spin Dynamics |
| 393 | Experimental observation of exceptional surface in synthetic dimensions with magnon polaritons | Zhang, Xufeng; Ding, Kun; Zhou, Xianjing; Xu, Jing; Jin, Dafei | We took advantage of the excellent tunability in magnon polaritons and introduced a 4-dimensional synthetic space, which enabled the observation of ES. | Session 30: Magnon and Spin Dynamics |
| 394 | Magnon spectrum of the chiral ferrimagnet Cu2OSeO3: a coarse-grained approach | Luo, Yi; Marcus, Guy; Trump, Benjamin; Kindervater, Jonas; Stone, Matthew; McQueen, Tyrel; Tchernyshyov, Oleg; Broholm, Collin | We report a comprehensive neutron scattering study of low energy magnetic excitations in the breathing pyrochlore helimagnetic Cu 2OSeO 3. | Session 30: Magnon and Spin Dynamics |
| 395 | Modeling Hall viscosity in magnetic Skyrmions | Kim, Bom | Our analyses, based on available asymmetric Hall angle data, reveal this transverse force amounts 3% – 5.4% of the force due to Skyrmion Hall effect. | Session 30: Magnon and Spin Dynamics |
| 396 | Spin dynamics in the skyrmion host lacunar spinel GaV4S8 | Pokharel, Ganesh; Suriya Arachchige, Hasitha; Ehlers, Georg; Do, Seunghwan; Stone, Matthew; Lumsden, Mark; Zhang, Hao; Batista, Cristian; Qiu, Yiming; Fishman, Randy; Mandrus, David; Christianson, Andrew | Using a Heisenberg model with near-neighbor exchange couplings and Dzyaloshinskii-Moria (DM) interactions, the excitation spectra are simulated. | Session 30: Magnon and Spin Dynamics |
| 397 | Dynamics of a vortex near the edge of a thin-film ferromagnet | Bjerngaard, Michael; Reitz, Derek; Tchernyshyov, Oleg | We study this motion numerically and model it analytically. | Session 30: Magnon and Spin Dynamics |
| 398 | Soliton Bound States in Large-Spin Anisotropic Antiferromagnets | Lane, Harry; Krüger, Frank; Christou, Elliot; Stock, Chris; Ewings, Russell | 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 30: Magnon and Spin Dynamics |
| 399 | Tuning high-Q nonlinear dynamics in a disordered quantum magnet | Silevitch, Daniel; Tang, Christopher; Aeppli, Gabriel; Rosenbaum, Thomas | Here we demonstrate an exception in a disordered quantum magnet that divides itself into nearly isolated subsystems. | Session 30: Magnon and Spin Dynamics |
| 400 | Enhanced self-focusing effect of spin-wave by a pulsed flat-top excitation field in a multi-domain state | Hyo Seok, Kim; Lee, Jongseok; Choi, In Hyeok | In this work, we explore another efficient way of the SW focusing by using the spatially and temporally tailored magnetic field excitations. | Session 30: Magnon and Spin Dynamics |
| 401 | Ferromagnetic resonance in few-layered CrI3 single crystals using magneto-Raman spectroscopy | Valdes Aguilar, Rolando; McCreary, Amber; Mai, Thuc; Utermohlen, Franz; Simpson, Jeffrey; Garrity, Kevin; Feng, Xiaozhou; Shcherbakov, Dmitry; Zhu, Yanglin; Hu, Jin; Weber, Daniel; Watanabe, Kenji; Taniguchi, Takashi; Goldberger, Joshua; Mao, Zhiqiang; Lau, Chun Ning; Lu, Yuan-Ming; Trivedi, Nandini; Hight Walker, Angela | We study in detail the structural and magnetic excitations of CrI 3 in single crystalline thin flakes using inelastic light scattering in a magnetic field. | Session 30: Magnon and Spin Dynamics |
| 402 | Manipulation of magnetic coupling and magnon transport in magnetic insulator-ferromagnetic metal hybrid structures | Fan, Yabin; Quarterman, Patrick; Finley, Joseph; Grutter, Alexander; Liu, Luqiao | Here, we introduce a Pt/yttrium iron garnet (YIG)/permalloy(Py) hybrid structure grown on Si substrate, where YIG is a ferrimagnetic insulator and Py is a ferromagnetic metal. | Session 31: Magnons and Spin Transport |
| 403 | Xe-PFIB microstructuring of Yttrium Iron Garnet films for quantum magnonic applications | Bozhko, Dmytro; Baity, Paul; Danilin, Sergey; Macedo, Rair; Seferai, Valentino; Nasti, Umberto; Casaburi, Alessandro; Smith, William; McVitie, Stephen; Hadfield, Robert; Weides, Martin | Through these techniques, we evaluate the effects of Xe-PFIB structuring on the magnetic damping. | Session 31: Magnons and Spin Transport |
| 404 | Py-Cu Graded-Index Magnonic Waveguides | Repa, Kristen; Mercovich, Celia; Miller, Casey | Py-Cu alloys are attractive for this study because we can easily tune magnetic properties by changing the Cu content of each layer (T C decreases as Cu content increases). | Session 31: Magnons and Spin Transport |
| 405 | Non-linear spin torque, pumping and cooling in superconductor/ferromagnet systems | Ojajärvi, Risto; Manninen, Juuso; Virtanen, Pauli; Heikkilä, Tero | We study the effects of the coupling between magnetization dynamics and the electronic degrees of freedom in a heterostructure of a metallic nanomagnet with dynamic magnetization coupled with a superconductor containing a steady spin-splitting field. | Session 31: Magnons and Spin Transport |
| 406 | Acoustic Ferromagnetic Resonance Assisted Spin-Torque Switching of Perpendicular MTJs | Misba, Walid Al; Rajib, Md Mahadi; Bhattacharya, Dhritiman; Atulasimha, Jayasimha | Acoustic Ferromagnetic Resonance Assisted Spin-Torque Switching of Perpendicular MTJs | Session 31: Magnons and Spin Transport |
| 407 | Transport and Magnetic Properties of Amorphous Fe:Dy Oxide Films. | Bey, Sara; Denton, Olivia; Allen, Tatiana; Koirala, Krishna; Roes, William; Duscher, Gerd; Kalyanaraman, Ramki | We have systematically studied transport, optical and magnetic properties of a large set of films deposited on Quartz and SiO2/Si substrates at different oxygen partial pressures [10-6,10-8,10-9 Torr]. | Session 31: Magnons and Spin Transport |
| 408 | Nonlinear Optical Imaging of Current Induced Spin Switching in Antiferromagnetic Materials | Lee, Joongwon; Tang, Yongjian; Mei, Antonio; Koksal, Okan; Schlom, Darrell; Ralph, Daniel; Rana, Farhan | In this paper, we show that scanning optical second harmonic generation (SHG) can be used to image and identify magnetic domains in inversion symmetric AF materials. | Session 31: Magnons and Spin Transport |
| 409 | Modeling Spin-Orbit Phenomena at Magnetic Interfaces | Manchon, Aurelien; Ghosh, Sumit; Abbout, Adel; Manchon, Guilhem; Hajir, Ahemd; Hariri, Abdulkarim | Based on the results of this model, I will address various aspects of the interplay between spin transport and magnetism mediated by spin-orbit coupling. | Session 31: Magnons and Spin Transport |
| 410 | The shift of the Curie temperature in bcc-Fe by phonon softening: first-principles phonon and Monte Carlo calculations. | Tanaka, Tomonori; Gohda, Yoshihiro | Various estimation techniques based on spin-lattice models are widely used to estimate Curie temperatures in magnetic materials. | Session 31: Magnons and Spin Transport |
| 411 | Magnetotransport properties of granular oxide-segregated CoPtCr films for applications in future magnetic memory technology | Williamson, Morgan; Tsoi, Maxim; Huang, Pin-Wei; Ju, Ganping; Wang, Cheng | Magnetotransport properties of granular oxide-segregated CoPtCr films for applications in future magnetic memory technology | Session 31: Magnons and Spin Transport |
| 412 | The spontaneous electrical and spin Hall effect in a collinear antiferromagnet | Yin, Gen; Yu, Jie-Xiang; Lake, Roger; Zang, Jiadong; Wang, Kang | Here, we show that in a collinear antiferromagnet, MnTe, the non-magnetic atomic structure breaks such symmetry, therefore allows a spontaneous Hall effect, which is known as planar Hall effect. | Session 31: Magnons and Spin Transport |
| 413 | THz spectroscopy of BiFeO3 in the magnetic-field-induced canted AFM state. | Viirok, Johan; Peedu, Laur; Nagel, Urmas; Room, Toomas; Szaller, Dávid; Kocsis, Vilmos; Bordacs, Sandor; Kezsmarki, Istvan; Engelkamp, Hans; Kamensky, Dima; Thirunavukkuarasu, Komalavalli; Ozerov, Mykhaylo; Smirnov, Dmitry; Krzystek, Jurek; Ozaki, Yukihiro; Ito, Toshimitsu; Tomioka, Yasuhide; Datta, Trinanjan; Fishman, Randy | Here we present the THz spectroscopy results for three different magnetic field orientation, parallel to hexagonal c axis, perpendicular and parallel to a axis, measured on the single FE domain crystals grown by the laser-diode heating floating-zone method [T. Ito et al., Cryst. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 414 | Magnetoelectric spectroscopy of spin excitations in LiCoPO4 | Room, Toomas; Viirok, Johan; Peedu, Laur; Nagel, Urmas; Bordacs, Sandor; Kezsmarki, Istvan; Kocsis, Vilmos; Tokunaga, Yusuke; Taguchi, Yasujiro; Tokura, Yoshinori | In this work [V. Kocsis et al., PRB 100, 155124 (2019)] we study optical magnetoelectric (ME) effect using optical directional anisotropy as measured by the THz absorption spectroscopy of spin resonances in LiCoPO 4. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 415 | Model for the Spin Dynamics of the Multiferroic (NH4)2FeCl5 (H2O) | Fishman, Randy; Tian, Wei; Fernandez-Baca, Jaime; Musfeldt, Janice; Lee, Jun Hee; Lee, Minseong; Singleton, John | We evaluate the magnetic interactions in the multiferroic erythrodsiderite (NH 4) 2FeCl 5 (H 2O) by comparing inelastic neutron scattering spectra of a single crystal sample with a simple Heisenberg model containing five exchange interactions and an easy-plane anisotropy. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 416 | Tunable Magnetic and Ferroelectric Order Parameters in Sr1-xBaxMn1-yTiyO3 | Chmaissem, Omar; Chapagain, Kamal; Haberl, Bianca; Lynn, Jeffrey; Lapidus, Saul; Kenney-Benson, Curtis; Dabrowski, Bogdan; Rosenkranz, Stephan | In this talk, I will discuss the recent development of single-site manganese-based multiferroic perovskite materials, Sr 1-xBa xMn 1-yTi yO 3, with ferroelectric transition temperatures boosted to ~430 K. Using a series of temperature-dependent scattering experiments at various pressures, we demonstrate the tunable character of coupling between the magnetic and ferroelectric order parameters and show that ferroelectricity could be easily manipulated through the application of either external or chemical pressures. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 417 | Insights into the coupled phenomena in molecular multiferroic (ND4)2[FeCl5(D2O)] via inelastic neutron scattering studies | Tian, Wei; Fishman, Randy; Cao, Huibo; Sala, Gabriele; Pajerowski, Daniel; Hong, Tao; Daemen, Luke; Cheng, Yongqiang; Fernandez-Baca, Jaime | Our data analysis shows the spin dynamics can be described by a Heisenberg Hamiltonian model with an easy-plane anisotropy that captures the key observations. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 418 | Magnetization reversal by electric field in Co substituted bismuth ferrite thin film | Azuma, Masaki; Shimizu, Keisiuke; Shigematsu, Kei; Hojo, Hajime | We have observed a spin structure transition from low-temperature cycloidal one to high-temperature collinear one at ~200 K using Mössbauer spectroscopy in rhombohedral BiFe 0.1Co 0.9O 3 thin films fabricated by PLD on SrTiO 3 (STO) (111) substrate. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 419 | Spin-liquid-like state in ferroelectric TbInO3 with a nearly triangular lattice | Kiryukhin, Valery | We describe a recently-discovered QSL candidate TbInO 3, containing nearly-triangular layers of non-Kramers Tb 3+ ions. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 420 | An annealing study of CaMn2O4-d, a possible multiferroic candidate | Gooch, Melissa; Wu, Hung-Cheng; Deng, Liangzi; Yang, Hung-Duen; Chu, Paul C. W. | From initial dc magnetization and C p measurements, the previously report T N ~ 220 K was observed for both samples. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 421 | Pressure effect on multiferroics investigation with neutron scattering | Wu, Yan; Tian, Wei; Cao, Huibo | We studied systems mainly with neutron scattering techniques in identifying their magnetic phase transitions under pressures to provide understanding for change of the ferroelectric properties in the system. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 422 | Magnetostructural domain wall patterning in ferrimagnetic spinels | Kish, Lazar; Aczel, Adam; DeBeer-Schmitt, Lisa; Thaler, Alexander; Reig-i-Plessis, Dalmau; Zakrzewski, Alexander; MacDougall, Greg | I will show small angle neutron scattering data associating these features with known first order magnetic transitions in these materials, and their control via applied magnetic field. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 423 | Large and highly anisotropic magnetocaloric effects in disordered-perovskite RCr0.5Fe0.5O3 single crystals (R = Gd, Er) | Shin, Hyunjun; Kim, JongHyuk; Oh, Donggun; Choi, Young Jai; Lee, Nara | We have successfully synthesized the disordered-perovskite RCr 0.5Fe 0.5O 3 (R=Gd, Er) single crystals which crystallize in an orthorhombic Pbnm structure, and investigated anisotropic magnetic and magnetocaloric properties. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 424 | An ab initio Study of Oxygen Vacancies in Ba2CuO4 and Sr2CuO4 | Matzelle, Matthew; Lane, Christopher; 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 and Sr 2CuO 4. | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 425 | THz spectroscopy of spin excitations in magnetoelectric LiCoPO4 in high magnetic fields | Peedu, Laur; Room, Toomas; Viirok, Johan; Nagel, Urmas; Bordacs, Sandor; Kocsis, Vilmos; Tokunaga, Yusuke; Taguchi, Yasujiro; Tokura, Yoshinori; Engelkamp, Hans; Zeitler, Uli; Kezsmarki, Istvan | THz spectroscopy of spin excitations in magnetoelectric LiCoPO4 in high magnetic fields | Session 32: Multiferroics and Magnetoelectricity in Complex Oxides |
| 426 | The Case for Octupolar Order in Cubic 5d2 Double Perovskites | Gaulin, Bruce | Our neutron powder diffraction measurements place an upper limit on any possible ordered dipole moment of ~ 0.1 μ B. To understand these results, we introduce a model for orbital repulsion between the two 5d electrons in Os 6+ in these materials. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 427 | Octupolar order in d-orbital Mott insulators. | Paramekanti, Arun; Maharaj, Dalini; Gaulin, Bruce | We discuss the quantum magnetism of $J=2$ ions which can be realized in spin-orbit coupled oxides with $5d^2$ transition metal ions. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 428 | Neutron scattering study of magnetic excitation in spinel structure spin-orbital coupling compound CuGa2O4 | Xu, Zhijun; Xu, Guangyong; Sapkota, Aashish; qiu, yimin; Gu, Genda; Tranquada, John | We report neutron scattering measurements on a single crystal CuGa2O4 sample. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 429 | d-Orbital Occupancy Systematics of 4d/5d Row Transition Metal Oxides 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 the various 4d row and 5d row TM oxides in order to investigate the systematics of the d-orbital occupancy and the XANES white line features for t 2g and e g symmetry orbitals. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 430 | From multipolar to spin-lattice disordered states in Mott insulators | Jackeli, George | We theoretically explore how in the Mott insulating compounds the spin-orbit coupling could give rise to unusual disordered (glass or liquid) states of spin-orbital or spin-lattice degrees of freedom depending on the local d-electron counting. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 431 | Observation of Spin Glassy Behavior in Sr3(Ru0.64Mn0.36)2O7 | Nepal, Roshan; Xing, Lingyi; Jin, Rongying | We report the magnetic properties of 36% Mn doped single-crystalline Sr 3(Ru 1-xMn x) 2O 7 (x = 0.36). | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 432 | A muSR study of current-induced destruction of order in Ca2RuO4 | Nugent, Matthew; Luke, Graeme; Beare, James; Braden, Markus; Jenni, Kevin; Sharma, Sudarshan; Rutherford, Megan; Sheng, Qi | Past work has shown that Ca 2RuO 4 is a Mott insulator, but can be switched to a semimetallic state with the application of a reasonable amount of current. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 433 | Electronic and magnetic properties in barium iridium oxides | Chen, Xiang; Yuan, Dongsheng; Bourret-Courchesne, Edith; Birgeneau, Robert | Here we introduce detailed experimental studies on those spin chain barium iridium oxides, which might be another intriguing system for engineering unusual electronic and magnetic ground states. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 434 | First-Principles Calculations of the atomic and magnetic structure of perovskite oxides SrMoO3, PbMoO3 and LaMoO3 | Lee-Hand, Jeremy; Dreyer, Cyrus | We use first-principles calculations based on density-functional theory (DFT) plus Hubbard U to investigate the family of perovskite molybdenates: SrMoO 3, PbMoO 3, and LaMoO 3 in order to determine their ground-state atomic and magnetic structures. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 435 | Random singlet state in the spin liquid candidate Ba5CuIr3O12 | Gorbunov, Denis; Volkov, Pavel; Won, Choong-Jae; Kim, Jaewook; Ye, Mai; Kim, Heung-Sik; Pixley, Jed; Cheong, Sang-Wook; Blumberg, Girsh | We study the thermodynamic and high magnetic field properties of the magnetic insulator Ba 5CuIr 3O 12, a QSL candidate showing no magnetic order down to 2 K. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 436 | Valence bond solids and hidden order phases in a pyrochlore U(1) quantum spin liquid | Yang, Hyeok-Jun; Lee, SungBin | Here, we study the pyrochlore XXZ model with farther and competing exchange interactions. | Session 33: Multipolar order and strongly spin-orbit coupled oxides |
| 437 | Quantum Spin Systems in Classical Electronic Devices | Bourassa, Alexandre | Overall, we present a narrow, widely tunable and stable spin based single photon source ideal for communication networks and long-distance entanglement. | Session 34: New Opportunities in Spin Sensing, Manipulation and Resonance without Time-Varying Magnetic Fields |
| 438 | Spin Dependent Recombination and Variable Range Hopping in the Absence of an Oscillating Magnetic Field in Inorganic Materials and Devices | Lenahan, Patrick | We have investigated changes in current dominated by spin dependent recombination and spin dependent variable range hopping [1-3] in a variety of systems resulting from the application of relatively small magnetic fields. | Session 34: New Opportunities in Spin Sensing, Manipulation and Resonance without Time-Varying Magnetic Fields |
| 439 | Magnetoresistance Measurements as an Alternative to Magnetic Resonance Methods for Studying Paramagnetic Defects | Harmon, Nicholas | This magnetoresistance method can be used in electronic devices to great advantage by probing paramagnetic defect environments such as hyperfine and spin-orbit couplings. | Session 34: New Opportunities in Spin Sensing, Manipulation and Resonance without Time-Varying Magnetic Fields |
| 440 | Quantum acoustic control of diamond nitrogen-vacancy centers | Chen, Huiyao | Here we report on diamond mechanical resonator device engineering and its application to the acoustic control of NV center quantum states. | Session 34: New Opportunities in Spin Sensing, Manipulation and Resonance without Time-Varying Magnetic Fields |
| 441 | Nonlinear planar Hall effect | Vignale, Giovanni; He, Pan; Zhu, Dapeng; Shi, Shuyuan; Yang, Hyunsoo; Zhang, Steven; Heinonen, Olle | Here, we report the observation of a new type of Hall effect in a 3D topological insulator Bi 2Se 3 film. | Session 34: New Opportunities in Spin Sensing, Manipulation and Resonance without Time-Varying Magnetic Fields |
| 442 | Interplay of local moment and itinerant magnetism in cobalt-based Heusler ferromagnets: Co2TiSi, Co2MnSi and Co2FeSi | Qin, Guanhua; Ren, Wei; Singh, David | We investigate the electronic structure, magnetism and spin excitations in the cobalt-based full Heusler compounds, Co2TiSi, Co2MnSi and Co2FeSi using first principles calculations. | Session 35: Novel Functional Magnetic Materials and Structures |
| 443 | Effect of V substitution on structural, magnetic, transport and mechanical properties of the half-metal-type Heusler alloy Co2FeGe | Mahat, Rabin; KC, Shambhu; Wines, Daniel; Regmi, Sudhir; KARKI, UPAMA; Ersan, Fatih; Ataca, Can; Gupta, Arunava; LeClair, Patrick | We present a combined experimental and theoretical study of quaternary Heusler alloys Co 2-xV xFeGe and Co 2Fe 1-xV xGe (0 ≤ x ≤ 1) as promising candidates for spintronic applications. | Session 35: Novel Functional Magnetic Materials and Structures |
| 444 | Half-metallicity in CrAl-terminated Co2CrAl thin film | Herran, Juliana; Carlile, Ryan; Kharel, Parashu; Lukashev, Pavel | Here, from first principles we study a full Heusler compound, Co 2CrAl in thin film geometry. | Session 35: Novel Functional Magnetic Materials and Structures |
| 445 | Anomalous Hall effect in a two sub-lattice ferrimagnet. | Thapa Magar, Nishchal; Michel, Dina; Ghimire, Nirmal | Here we will present the observation of an anomalous Hall effect in a hexagonal ferrimagnet TbMn 6Sn 6 consisting of two spin sub-lattices due to Mn and Tb ordering. | Session 35: Novel Functional Magnetic Materials and Structures |
| 446 | Itinerant ferromagnetism and intrinsic anomalous Hall effect in amorphous iron-germanium | Bouma, Dinah Simone; Reynolds, Neal; Chen, Zhanghui; Bruni, Frank; Zhang, Binhua; Flatté, Michael; Streubel, Robert; Wang, Lin-Wang; Wu, Ruqian; Hellman, Frances | This result and the accompanying Stoner-like model for the intrinsic AHC establish a unified understanding of the physics of the anomalous Hall effect in both crystalline and disordered systems. | Session 35: Novel Functional Magnetic Materials and Structures |
| 447 | Unusual Friedel and RKKY responses in 3D quadratic band-touching Luttinger semimetals | J. Godbout, Louis; Tchoumakov, Sergueï; 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 35: Novel Functional Magnetic Materials and Structures |
| 448 | Search for new permanent magnet materials: methodology and applications. | Vekilova, Olga | To be able to effectively describe that, especially in the course of high-throughput calculations, we have introduced a novel theoretical method, combining molecular dynamics with the magnetic state search [3]. | Session 35: Novel Functional Magnetic Materials and Structures |
| 449 | The Voltage-Controlled Magnetic Anisotropy Effect Under High Electric Field | Zhou, Bowei; Xu, Meng; Khanal, Pravin; Zhang, Yu; Wang, Weigang | Modified TMR method is performed in this work. | Session 35: Novel Functional Magnetic Materials and Structures |
| 450 | Energy-efficient stochastic computing with superparamagnetic tunnel junctions | Daniels, Matthew; Madhavan, Advait; Talatchian, Philippe; Mizrahi, Alice; Stiles, Mark | This bitstream generator gives us the freedom of not having to design around correlations and allows us to propose a low-energy approach to stochastic computing. | Session 35: Novel Functional Magnetic Materials and Structures |
| 451 | Atomic scale magnetic and structural imaging by achromatic electron microscopy | Wang, Zechao; Zhu, Jing | Here, we show that a combination of electron energy-loss magnetic chiral dichroism (EMCD) 1 and chromatic-aberration-corrected transmission electron microscopy, which can provide element-selective orbital and spin magnetic moments atomic plane by atomic plane. | Session 35: Novel Functional Magnetic Materials and Structures |
| 452 | Electrical transport in FIB-microstructures of single-crystalline Mn1.4PtSn | Winter, Moritz; Hamann, Sandra; Uhlarz, Marc; Gayles, Jacob; Vir, Praveen; Koenig, Markus; Felser, Claudia; Wosnitza, Joachim; Helm, Toni | We investigate transport devices fabricated by the application of focused ion beams (FIB) from high-quality single crystals. | Session 35: Novel Functional Magnetic Materials and Structures |
| 453 | Valence instability across magnetostructural transition in USb2 | Brubaker, Zachary; Xiao, Yuming; Chow, Paul; Kenney-Benson, Curtis; Smith, Jesse; Cynn, Hyunchae; Reynolds, Christopher; Butch, Nicholas; Zieve, Rena; Jeffries, Jason | To elucidate the behavior near this magnetic transition, we performed pressure dependent X-ray diffraction and resonant X-ray emission spectroscopy experiments on USb 2. | Session 35: Novel Functional Magnetic Materials and Structures |
| 454 | Effect of Co, Ni, and Co-Ni doping on magnetic and electronic properties of MnBi by first-principles calculations | Nandadasa, Chandani; Lamichhane, Bipin; Thapa, Dinesh; Choi, Minyeong; Hong, Yang-Ki; Kim, Seong-Gon | We studied the magnetic and electronic properties of MnBi doped with Co, Ni, and Co-Ni using the Generalized Gradient Approximation (GGA) method within Density Functional Theory (DFT). | Session 35: Novel Functional Magnetic Materials and Structures |
| 455 | Kardar-Parisi-Zhang Universality in the Infinite Temperature spin-half Heisenberg Chain | Sherman, Nicholas; Moore, Joel | In this work, I computed the dynamical structure factor at infinite temperature using matrix product states for the spin-half Heisenberg, and show that it exhibits the scaling function from the KPZ universality class, strengthening the claim that KPZ dynamics are present in quantum spin systems. | Session 35: Novel Functional Magnetic Materials and Structures |
| 456 | Mechanically Induced Thermal Breakdown in Magnetic Shuttle Structures | Ilinskaya, Olya; Kulinich, Sergeij; Krive, Ilya; Shekhter, Robert; Park, Hee Chul; Jonson, Mats | We find that (i) the upper critical magnetic field saturates to a constant value in the high temperature limit and that the shuttle instability domain expands with a decrease of the temperature; (ii) the lower critical magnetic field depends not only on the temperature independent phenomenological friction coefficient used in the model but also on intrinsic friction caused by magnetic exchange forces and electron tunneling between the quantum dot and the leads. | Session 35: Novel Functional Magnetic Materials and Structures |
| 457 | Crystal growth and characterization of the magnetic properties of intercalated transition metal dichalcogenides | Lu, Kannan; Sapkota, Deepak; Aczel, Adam; DeBeer-Schmitt, Lisa; Wu, Yan; Mandrus, David; MacDougall, Greg | With this motivation in mind, we have undertaken a concerted effort at Illinois to grow large single crystals of additional intercalated TMDCs, and characterize them with a series of techniques, including magnetization, heat capacity, x-ray and neutron scattering. | Session 36: Novel Magnetic Materials |
| 458 | Vestigial Potts nematicity in a triangular lattice magnet | Venderbos, Jörn; Fernandes, Rafael | We develop the general theory of (single-q) magnetic order at degenerate symmetry-related wave vectors, and show that distinct magnetic phases can be elegantly captured by composite order parameters: bilinears of the primary magnetic order parameters which transform irreducibly under the symmetry group. | Session 36: Novel Magnetic Materials |
| 459 | Effect of Confinement on Magnetism and Skyrmionic Properties of CoSi Nanoparticles | Pahari, Rabindra; Balasubramanian, Balamurugan; Ullah, Ahsan; Pathak, Rohit; Kashyap, Arti; Skomski, Ralph; Hadjipanayis, George; Sellmyer, David | In sharp contrast to non-magnetic bulk equiatomic CoSi, we show a magnetic ordering at room temperature with a net magnetic moment m = 0.11 μ B/Co for CoSi nanoparticles. | Session 36: Novel Magnetic Materials |
| 460 | New magnetic orderings in elemental Neodymium | Suriya Arachchige, Hasitha; DeBeer-Schmitt, Lisa; Parker, David; May, Andrew; Bleuel, Markus; Pokharel, Ganesh; Tian, Wei; Batista, Cristian; Mandrus, David; Christianson, Andrew | Here we present a small angle neutron scattering (SANS) study of neodymium to probe whether the complex magnetic interactions on the double hexagonal closed packed (DHCP) crystal structure of neodymium can host novel spin textures. | Session 36: Novel Magnetic Materials |
| 461 | Magnetic textures in single crystals of Ni1-xFexBr2 | Rai, Binod; Suriya Arachchige, Hasitha; Pokharel, Ganesh; Liu, Yaohua; Lin, Shizeng; Batista, Cristian; Mandrus, David; Christianson, Andrew; May, Andrew | This presentation will discuss the magnetic properties of Ni 1-xFe xBr 2 single crystals and the magnetic field-temperature phase diagram. | Session 36: Novel Magnetic Materials |
| 462 | Imaging skyrmions in B20 epitaxial thin films grown on Si substrates using variable temperature Magnetic Force Microscopy (MFM) | Selcu, Camelia; Liu, tao; Pelekhov, Denis; Bennett, Roland; Wang, Binbin; Bagues Salguero, Nuria; Repicky, Jacob; Corbett, Joseph; McCullian, Brendan; Luo, Yunqiu (Kelly); Chen, Shuyu; Ahmed, Adam; Hammel, P Chris; Randeria, Mohit; Gupta, Jay; McComb, David; Kawakami, Roland | Here, we report the first time imaging of the skyrmions in FeGe and Fe rich Fe 1.2Ge epitaxial thin films grown on Si substrates using Magnetic Force Microscopy (MFM). | Session 36: Novel Magnetic Materials |
| 463 | Frustration Stabilized Skyrmions studied with X-ray Scattering and μSR | Wilson, Murray; Gomilsek, Matjaz; Hicken, Thomas; Moody, Samuel; Birch, Max; Stefancic, Ales; Balakrishnan, Geetha; Lancaster, Tom; Hatton, Peter | In this talk, we will present measurements of resonant X-ray scattering on Gd 2PdSi 3 and muon spin rotation on Gd 2PdSi 3 and Gd 3Ru 4Al 12. | Session 36: Novel Magnetic Materials |
| 464 | Lattice dynamics of antiperovskite manganese nitrides exhibiting large negative and positive thermal expansion | Patel, Sheena; Hrkac, Stjepan; Brock, Jeffrey; Hua, Nelson; Wen, Haidan; Shpyrko, Oleg; Fullerton, Eric | We present the complex lattice dynamics and discuss the spin-lattice coupling driving their response. | Session 36: Novel Magnetic Materials |
| 465 | Non-periodic magnetic structure in chiral helimagnet Mn1/3NbS2 | Karna, Sunil; Charilaou, Michalis; Kovács, Andras; DeBeer-Schmitt, Lisa; Young, David; Ditusa, John | We have investigated the magnetic state of Mn 1/3NbS 2 through ac-magnetic susceptibility, Small-angle Neutron Scattering (SANS), Lorentz Transmission Electron Microscopy (LTEM) and micromagnetic simulations. | Session 36: Novel Magnetic Materials |
| 466 | 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 36: Novel Magnetic Materials |
| 467 | Magnetic texture evolution within uniaxial kagome ferromagnets immediately below Curie temperature | Sugawara, Akira; Akashi, Tetsuya; Kassem, Mohamed; Tabata, Yoshikazu; Waki, Takeshi; Nakamura, Hiroyuki | We examined magnetic texture within two uniaxial kagome ferromagnets: Co 3Sn 2S 2 (T c=176 K) studied extensively as a Weyl-semimetal and Fe 3Sn 2 (T c= 657 K) interested for its massive Dirac fermions. | Session 36: Novel Magnetic Materials |
| 468 | Phase Boundary Near a Magnetic Percolation Transition | Khairnar, Gaurav; Lerch, Cameron; Vojta, Thomas | We perform large scale Monte-Carlo simulation of diluted XY and Heisenberg models for both cubic lattices and lattices representing the crystal structure of the hexaferrites. | Session 36: Novel Magnetic Materials |
| 469 | Driving the magnetic transition 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 36: Novel Magnetic Materials |
| 470 | Intrinsic stability of magnetic anti-skyrmions in the tetragonal inverse Heusler compound Mn1.4Pt0.9Pd0.1Sn | Saha, Rana; Srivastava, Abhay Kant; Ma, Tianping; Jena, Jagannath; Werner, Peter; Kumar, Vivek; Felser, Claudia; Parkin, Stuart | Here we show, using Lorentz transmission electron microscopy, that anti-skyrmions are found over a wide range of temperature and magnetic field in wedged lamellae formed from single crystals of Mn 1.4Pt 0.9Pd 0.1Sn for thicknesses ranging up to ~250 nm [2]. | Session 36: Novel Magnetic Materials |
| 471 | Low-temperature magnetic proximity effects in Mg(Al,Fe)2O4/Bi2Se3 bilayers | Riddiford, Lauren; Li, Peng; Grutter, Alexander; Suzuki, Yuri | At low temperature, below 45 K, we have found evidence of proximity-induced magnetism in the TI. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 472 | Exotic coupling in garnet-ferromagnet heterostructures | Quarterman, Patrick; Fan, Yabin; Liu, Luqiao; Grutter, Alexander | In this work, we discuss the coupling of YIG to Py and Co when grown on Si and GGG substrates by measuring the magnetic depth profile using polarized neutron reflectometry. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 473 | Angle-dependent magnetoresistance of Pt/EuO1-x thin films | Shrestha, Narendra; Murphy, Joseph; Kattel, Subash; Rice, WIlliam; Tang, Jinke | We study the magnetic and transport properties as a function of temperature and field. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 474 | Magnetoresistance and second harmonic Hall measurement of Pt/CoFe2O4 bilayers | Zhang, Zexuan; Dang, Phillip; Casamento, Joseph; Li, Xiang; Tang, Yongjian; Nan, Tianxiang; Ralph, Daniel; Xing, Huili; Jena, Debdeep | Here, we report the observation of magnetic proximity effect in ex situ sputtered Pt on MBE grown CFO (001) at room temperature. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 475 | Hydroxide-based Magneto-ionics | Quintana-Puebla, Alberto; Firme, Abigail; Jensen, Christopher; Liu, Kai | In this work, we aim to study the magneto-ionic effects in cobalt hydroxide (Co(OH) 2) / gadolinium (Gd) heterostructures. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 476 | Current-induced magnetization switching in all-oxide heterostructures | Liu, Liang; Qin, Qing; Lin, Weinan; LI, Changjian; Xie, Qidong; He, Shikun; Shu, Xinyu; Zhou, Chenghang; Lim, Zhishiuh; Yu, Jihang; Lu, Wenlai; Li, Mengsha; Yan, Xiaobing; Pennycook, Stephen; Chen, Jingsheng | Here, we combine a ferromagnetic transition metal oxide with an oxide with strong spin-orbit coupling to demonstrate all-oxide SOT devices. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 477 | Enhancement of spin-charge interconversion efficiency by interface engineering in all oxide La0.3Sr0.7MnO3/SrIrO3 system | Huang, Xiaoxi; Zhang, Hongrui; Sayed, Shehrin; Hsu, Shang-Lin; Everhardt, Arnoud; Gosavi, Tanay; Lin, Chia-Ching; Manipatruni, Sasikanth; Young, Ian; Salahuddin, Sayeef; Ralph, Daniel; Ramesh, Ramamoorthy | Enhancement of spin-charge interconversion efficiency by interface engineering in all oxide La0.3Sr0.7MnO3/SrIrO3 system | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 478 | 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 37: Proximity Effects and Spin Transport in Complex Oxides |
| 479 | Current-manipulated propagation of spin waves in antiparallel coupled stripe domains of La 0.67 Sr 0.33 MnO 3 thin films | Yu, Haiming | We developed a theoretical model based on two oppositely oriented coupled domains, which accounts the high-frequency mode an effective antiferromagnetic spin-wave mode. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 480 | Anisotropic magnon spin diffusion length in ultra-thin spinel ferrite thin films | Li, Ruofan; Nan, Tianxiang; Li, Peng; Suzuki, Yuri; Ralph, Daniel | 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 thickness of 6 nm. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 481 | Low Magnetic Damping in Epitaxial Li0.5Fe2.5O4 Thin Films | Zheng, Xin Yu; Riddiford, Lauren; Wisser, Jacob; Suzuki, Yuri | In this talk, we demonstrate the realization of epitaxial LFO ultra-thin films (~3nm) on MgAl 2O 4 substrates with an ultra-low damping of α ≈ 0.0005 and an FMR linewidth of 7.5 Oe at 15GHz. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 482 | Interface ferromagnetism and anomalous Hall effect of CdO/ferromagnetic-insulator heterostructures | Ma, Yang | Here, we report the experimental observation of the interfacial ferromagnetism and anomalous Hall effect in the Fe3O4/CdO/Fe3O4 heterostructures grown via oxide molecular-beam epitaxy. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 483 | Structural, Magnetic and Electrical Transport Properties of YIG Thin Films with Heavily Reduced Oxygen Content | Mi, Shu; Gollapothu, Venkata; Huang, Haoliang; Lu, Yalin; Zhao, Yonggang | So far, many studies have shown that oxygen content is essential for tuning the structural and magnetic properties of YIG films [2]. | Session 37: Proximity Effects and Spin Transport in Complex Oxides |
| 484 | Spherical Neutron Polarimetry and the Phase Diagram of Magnetically Dilute Er2Ti2O7 | Buhariwalla, Connor; Gaudet, Jonathan; Suen, Cissy; Qureshi, Navid; Stunault, Anne; Munsie, Timothy; Dabkowska, Hanna; Gaulin, Bruce | In this talk, I will present the results of our SNP study of these 3 diluted samples, following our previous work using inelastic neutron scattering. | Session 38: Pyrochlores |
| 485 | Magnetic phase competition in the rare-earth pyrochlore Er2Sn2O7 | Yahne, Danielle; Sanjeewa, Liurukara; Kolis, Joseph; Jaubert, Ludovic; Pereira, Darren; Enjalran, Matthew; Gingras, Michel J; Ross, Kate | In this talk, we report specific heat measurements on single crystals of Er 2Sn 2O 7 under fields applied along the three high symmetry directions, [111], [110], and [100]. | Session 38: Pyrochlores |
| 486 | Theory of Multiple Reentrant Phenomena in the XY Pyrochlore Er2Sn2O7 | Pereira, Darren; Jaubert, Ludovic; Enjalran, Matthew; Yahne, Danielle; Ross, Kate; Gingras, Michel J | In this talk, I will discuss our efforts to understand these reentrant phenomena from the theoretical front, drawing from variational mean-field theory, classical Monte Carlo simulations, and classical spin wave analysis. | Session 38: Pyrochlores |
| 487 | High pressure synthesis and characterization of R2Pt2O7 pyrochlores | Cheng, Jinguang | Indeed, we found enhanced magnetic ordering temperature in Gd 2Pt 2O 7 due to presence of extra superexchange pathways through the empty Pt- eg orbitals [1]. | Session 38: Pyrochlores |
| 488 | Single crystal neutron scattering study of the pyrochlore Yb2Ge2O7 | Sarkis, Colin; Rau, Jeffrey; Sanjeewa, Duminda; Powell, Matthew; Kolis, Joseph; Marbey, Jonathan; Hill, Stephen; Rodriguez-Rivera, Jose; Nair, Harikrishnan; Gingras, Michel J; Ross, Kate | We have used the field-polarized spin waves to determine the exchange parameters for Yb 2Ge 2O 7. | Session 38: Pyrochlores |
| 489 | Orientation Dependence of the Magnetic Phase Diagram of Yb2Ti2O7 | Säubert, Steffen; Scheie, Allen; Duvinage, Christopher; Kindervater, Jonas; Zhang, Shu; Changlani, Hitesh; Xu, Guangyong; Koohpayeh, Seyed; Tchernyshyov, Oleg; Broholm, Collin; Pfleiderer, Christian | We present the orientation dependence of the magnetic phase diagram of stoichiometric Yb 2Ti 2O 7 using four experimental probes: magnetization, heat capacity, susceptibility, and neutron scattering. | Session 38: Pyrochlores |
| 490 | Exploring the influence of disorder on magnetic moment fragmentation | Zoghlin, Eli; Schmehr, Julian; Wilson, Stephen | Here we present an experimental exploration of the role of native disorder on the features associated with spin fragmentation in Nd2Zr2O7. | Session 38: Pyrochlores |
| 491 | Magnetization plateaus of the quantum pyrochlore Heisenberg antiferromagnet | PAL, SANTANU; LAL, SIDDHARTHA | We predict magnetization plateaus ground states for S = 1/2 Heisenberg antiferromagnets on pyrochlore lattices by formulating arguments based on gauge and spin-parity transformations. | Session 38: Pyrochlores |
| 492 | Magnetism of classical pyrochlore antiferromagnet Na3Mn(CO3)2Cl | Nawa, Kazuhiro; Okuyama, Daisuke; Avdeev, Maxim; Nojiri, Hiroyuki; Yoshida, Masahiro; Ueta, Daichi; Yoshizawa, Hideki; Sato, Taku | In this research, we report structural and magnetic properties together with low-temperature neutron diffraction patterns on a new pyrochlore antiferromagnet Na 3Mn(CO 3) 2Cl. | Session 38: Pyrochlores |
| 493 | Magnetic properties of distorted pyrochlore lattice Mn2(OD)3X (X = Cl, Br) | Hagihala, Masato; Zheng, X.G.; Kamiyama, Takashi | Magnetic properties of distorted pyrochlore lattice Mn2(OD)3X (X = Cl, Br) | Session 38: Pyrochlores |
| 494 | Magnetometry and transport studies of single crystal pyrochlore iridates | Pearce, Matthew; Goetze, Kathrin; Goddard, Paul; Lees, Martin; Prabhakaran, Dharmalingam; Boothroyd, Andrew; Sikkenk, Tycho; Szabo, Attila; Castelnovo, Claudio | We present a systematic study of the evolution of these properties with magnetic field, temperature and angle. | Session 38: Pyrochlores |
| 495 | Magnetisation and monopole density response to applied magnetic fields in rare earth pyrochlore iridates | Szabo, Attila; Sikkenk, Tycho; Castelnovo, Claudio; Pearce, Matthew; Goetze, Kathrin; Lees, Martin; Prabhakaran, Dharmalingam; Boothroyd, Andrew; 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 38: Pyrochlores |
| 496 | Study of the spin orbit coupling metal Cd2Re2O7 by torque magnetometry | Chen, Kuan-Wen; Asaba, Tomoya; Xiang, Ziji; Tinsman, Colin; Chen, Lu; Yan, Jiaqiang; Li, Lu | In this talk, we will discuss the Fermiology of Cd 2Re 2O 7 by torque magnetometry and compare with the density functional calculations. | Session 38: Pyrochlores |
| 497 | Dynamics of a pyrochlore quantum spin liquid NaCaNi2F7 | Zhang, Shu; Changlani, Hitesh; Plumb, Kemp; Tchernyshyov, Oleg; Moessner, Roderich | We combine analytical theory and numerical approaches to elucidate the nature of this enigmatic spin-liquid state [3]. | Session 39: Pyrochlores: Spin Liquids |
| 498 | Magnetic field dependence of magnetic correlations in a pyrochlore Heisenberg antiferromagnet | De la Torre, Alberto; Krizan, Jason; Xu, Guangyong; Cava, Robert; Plumb, Kemp | We present here a set of neutron scattering measurements in NaCaNi 2F 7 as a function of external magnetic field. | Session 39: Pyrochlores: Spin Liquids |
| 499 | Ultrasound Velocity Measurements in Bond-Disordered Pyrochlore Magnet NaCaCo2F7 | Watanabe, Tadataka; Kato, Hiroya; Hara, Yoshiaki; Krizan, Jason; Cava, Robert | We perform ultrasound velocity measurements in a single crystal of NaCaCo 2F 7. | Session 39: Pyrochlores: Spin Liquids |
| 500 | Low energy excitations in Tb2Ti2O7 with [111] magnetic field | Zhang, Xinshu; Koohpayeh, Seyed; Armitage, Peter | We perform time-domain terahertz spectroscopy on high quality Tb 2Ti 2O 7 crystal to study the crystal field excitations as a function of magnetic field with very high resolution. | Session 39: Pyrochlores: Spin Liquids |
| 501 | THz spectroscopy study of the rare-earth pyrochlore Tb2Ti2O7 | Amelin, Kirill; Room, Toomas; Nagel, Urmas; Constable, Evan; Wang, Zhe; Alexanian, Yann; Robert, Julien; Ballou, Rafik; Debrion, Sophie | THz spectroscopy study of the rare-earth pyrochlore Tb2Ti2O7 | Session 39: Pyrochlores: Spin Liquids |
| 502 | Probing Multipolar Quantum Spin Liquids in non-Kramers Pyrochlore Materials with Magnetostriction. | Patri, Adarsh; Hosoi, Masashi; Lee, SungBin; Kim, Yong-Baek | In this talk, we theoretically propose that spin-lattice coupling can be used as a powerful tool to probe such multipolar QSL phases. | Session 39: Pyrochlores: Spin Liquids |
| 503 | Half-moon quantum spin liquid in a spin-1/2 J1-J2-J3a Heisenberg antiferromagnet on the pyrochlore lattice | Ghosh, Pratyay; Müller, Tobias; Reuther, Johannes; Thomale, Ronny; Gingras, Michel J; Iqbal, Yasir | Hence, we present a rare scenario wherein thermal and quantum fluctuations act differently. | Session 39: Pyrochlores: Spin Liquids |
| 504 | 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, Christopher; Barker, Joel; Hu, Haoyu; Chung, Jae-Ho; Xu, Xianghan; Cheong, Sang-Wook; Nallaiyan, Manivannan; Spagna, Stefano; Maple, M Brian; Nevidomskyy, Andriy; Morosan, Emilia; Chen, Gang; Dai, Pengcheng | Here we use alternating current magnetic susceptibility, thermodynamic, muon spin relaxation (μSR), and neutron scattering experiments on single crystals of Ce 2Zr 2O 7, a compound isostructural to Ce 2Sn 2O 7, to demonstrate the absence of magnetic ordering/spin-glass down to 20 mK and the presence of a spin excitation continuum at 35 mK. | Session 39: Pyrochlores: Spin Liquids |
| 505 | Interplay between magnetic exchange, multipolar interactions and virtual crystal field fluctuations in non-Kramers pyrochlore magnets | Jin, Wen; Gingras, Michel J; Alannah, Hallas; Gaudet, Jonathan; Gaulin, Bruce | Via a mean field approach, we show that the proposed model exhibits complex dipolar and quadrupolar phases. | Session 39: Pyrochlores: Spin Liquids |
| 506 | Crystal Field Excitations in Raman Spectra of Pr-based Pyrochlores | Xu, Yuanyuan; Ohtsuki, Takumi; Man, Huiyuan; Tang, Nan; Baidya, Santu; Zhang, Hongbin; Nakatsuji, Satoru; Vanderbilt, David; Drichko, Natalia | Here we present a study of Pr 2Ir 2O 7 and Pr 2Zr 2O 7, which show magnetic interactions but no ordering down to low temperatures [1-3]. | Session 39: Pyrochlores: Spin Liquids |
| 507 | Probing Emergent Excitations in Pr2Hf2O7 with Thermal Conductivity | Reid, Jennifer; Froude-Powers, Shaun; Samartzis, Alexandros; Lake, Bella; Hill, Robert | We report thermal conductivity measurements of single crystal samples of PHO as a function of temperature between 50 mK and 50 K and magnetic field up to 12 T. | Session 39: Pyrochlores: Spin Liquids |
| 508 | Spatiotemporal mapping of photocurrent in 2D materials using diamond quantum sensors | Zhou, Brian | We reveal that photocurrent in monolayer MoS 2 circulates as a micron-scale vortex under an external magnetic field due to a strong photo-Nernst effect. | Session 40: Quantum Spins in Semiconductors |
| 509 | Optically pumped spin polarization as a probe of many-body thermalization | Pagliero, Daniela; Zangara, Pablo; Henshaw, Jacob; Ajoy, Ashok; Acosta, Rodolfo; Reimer, Jeffrey; Pines, Alexander; Meriles, Carlos | Here we investigate the spin diffusion dynamics of 13C in diamond, which we dynamically polarize at room temperature via optical spin pumping of engineered color centers. | Session 40: Quantum Spins in Semiconductors |
| 510 | Nanoscale structure of the orbital magnetic moment of a single dopant spin in a semiconductor | Rodrigues da Cruz, Adonai; Flatté, Michael | In this project we developed a formalism employing Green’s functions obtained by the Koster-Slater technique [2] with a sp 3d 5s * empirical tight-binding Hamiltonian [3] to describe the host material. | Session 40: Quantum Spins in Semiconductors |
| 511 | Pulsed Electrically Detected Magnetic Resonance (pEDMR) at Low Magnetic Fields using an Arbitrary Wave Form Generator (AWG) | Tennahewa, Taniya; Malissa, Hans; Popli, Henna; Atwood, Sabastian; Hosseinzadeh, Sanaz; Lupton, John; Boehme, Christoph | We use pulsed electrically detected magnetic resonance (pEDMR) in order to observe the coherent propagation of electron spins under strong drive magnetic resonance conditions in organic materials, where excitation frequencies (~100 MHz) and Zeeman fields (~3 mT) are low. | Session 40: Quantum Spins in Semiconductors |
| 512 | Detection of electron spin resonance in the strong, non-linear drive regime using spin-dependent charge carrier recombination currents and an amplitude-modulated continuous wave electrically detected magnetic resonance scheme | Atwood, Sabastian; Nahlawi, Adnan; Hosseinzadeh, Sanaz; Tennahewa, Taniya; Popli, Henna; Malissa, Hans; Lupton, John; Boehme, Christoph | Here, we demonstrate the use of amplitude-modulated lock-in detection for the isolation of these two electric current signatures, taking advantage of their different dynamic natures. | Session 40: Quantum Spins in Semiconductors |
| 513 | Probing spin-dependent electronic transitions in a conjugated polymer using electrically detected magnetic resonance (EDMR) under hole injection with MoO3 electrodes | Hosseinzadeh, Sanaz; Malissa, Hans; Nahlawi, Adnan; Boehme, Christoph | As spin-dependent electronic transitions rates change under magnetic resonant excitation, spin-dependent recombination can be studied using a method called electrically detected magnetic resonance spectroscopy (EDMR) [1-2]. | Session 40: Quantum Spins in Semiconductors |
| 514 | Manipulation of Dynamic Nuclear Polarization in Gallium Arsenide under periodic optical electron spin pumping | Dominguez, Michael; Iafrate, Joseph; Sih, Vanessa | We demonstrate that the coupled electron-nuclear spin systems can be manipulated by varying the excitation energy and sweeping an external magnetic field. | Session 40: Quantum Spins in Semiconductors |
| 515 | The impact of dynamic nuclear polarization on non-local spin valve and inverse spin Hall Hanle measurements in n-GaAs | Jiang, Zhen; Patel, Sahil; Crowell, Paul; Palmstrom, Chris | We have developed a pulsed-current technique which utilizes the vast difference between electron and nuclear spin relaxation time scales (about ns and s respectively) to eliminate the impact of the steady-state hyperfine field, and the obtained Hanle curves then match expectations based on simple drift-diffusion models. | Session 40: Quantum Spins in Semiconductors |
| 516 | Magnetic properties of a single micrometer-sized YIG/FGT multilayer heterostructure revealed by ferromagnetic resonance | Arkook, Bassim; Alghamdi, Mohammed; Ortiz, Victor; Shi, Jing; Barsukov, Igor | The results shed light on spin phenomena at YIG/FGT interfaces and present an experimental approach for studies of micro-scale magnetic insulator/2D heterostructures. | Session 40: Quantum Spins in Semiconductors |
| 517 | Dynamics of Spin Waves in 1D and 2D Magnonic Crystals of V[TCNE]x~2 with YIG or Cobalt | Hu, Kwangyul; Flatté, Michael | Here, we calculate and present the magnonic dispersions and linewidths of quasi one-dimensional and two-dimensional magnonic crystals consisting of V[TCNE] x~2 with YIG or cobalt. | Session 40: Quantum Spins in Semiconductors |
| 518 | Impact of hidden structural order on low temperature magnetic resonance in V[TCNE]x | Yusuf, Huma; Franson, Andrew; Kurfman, Seth; Johnston-Halperin, Ezekiel | Here we report the observation of anomalous temperature dependent anisotropy in thin films of V[TCNE]x at temperatures down to 5 K. | Session 40: Quantum Spins in Semiconductors |
| 519 | Topological Quantum Many-Body Scars in Quantum Dimer Models | Seidel, Alexander; Wildeboer, Julia; Nielsen, Anne E. B.; Erten, Onur | We construct two-dimensional lattice models with quantum dimer degrees of freedom that violate the eigenstate thermalization hypothesis (ETH) by featuring quantum many-body scars in their excitation spectrum. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 520 | Novel Quantum Phase Transition of the Shastry-Sutherland Model | Sakai, Toru; Nakano, Hiroki | The Shastry-Sutherland model – the S = 1/2 Heisenberg antiferromagnet on the square lattice accompanied by orthogonal dimerized interactions – is studied by the numerical-diagonalization method. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 521 | Antiferromagnetic-to-ferrimagnetic phase transition in frustrated polar magnet CaBaCo4O7 | Omi, Tsuyoshi; Watanabe, Yoshito; Abe, Nobuyuki; Tokunaga, Yusuke; Nakao, Akiko; Munakata, Koji; Sagayama, Hajime; Arima, Taka-hisa | We investigate the phase transition of CaBaCo 4O 7. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 522 | Sign-switching of dimer correlations in SrCu2(BO3)2 under hydrostatic pressure | Bettler, Simon; Stoppel, Lena; Yan, Zewu; Gvasaliya, Severian; Zheludev, Andrey | Sign-switching of dimer correlations in SrCu2(BO3)2 under hydrostatic pressure | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 523 | Large spin fluctuation in the magnetization process of S=1/2 frustrated square lattice model | Okubo, Tsuyoshi | Motivated by several compounds, we discuss the nature of S=1/2 square lattice Heisenberg magnets with ferromagnetic and antiferromagnetic nearest-neighbor interactions. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 524 | Quantum Phases Diagram of the Plaquette State of the Shastry-Sutherland Compound SrCu2(BO3)2 | Haravifard, Sara; Shi, Zhenzhong; Dissanayake, Sachith; Graf, David; Corboz, Philippe; Mila, Frederic; Silevitch, Daniel; Rosenbaum, Thomas; Dabkowska, Hanna; Marjerrison, Casey | Here, we report a comprehensive study of the quantum phase diagram of the plaquette state by tuning temperature, pressure, magnetic field, and chemical doping. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 525 | Critical properties of a fractionally frustrated XY model on the square lattice | Surungan, Tasrief; Nussinov, Zohar | We study a fractionally frustrated XY model on the square lattice. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 526 | Exact Solution and Correlations of a Quantum Dimer Model on the Checkerboard Lattice | Wildeboer, Julia; Nussinov, Zohar; Seidel, Alexander | Here we present analytic results on a special dimer model on a {\it nonplanar} checkerboard lattice of interacting dimers, which does not permit for parallel dimers to surround diagonal links. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 527 | Magnetic structure of the stuffed honeycomb antiferromagnet GdInO3 | Feng, Erxi; Xu, Xianghan; Emmanouilidou, Eve; Kim, Jae Wook; Wu, Yan; DING, LEI; Kolesnikov, Alexander; Ni, Ni; Cheong, Sang-Wook; Cao, Huibo | Magnetic structure of the stuffed honeycomb antiferromagnet GdInO3 | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 528 | Frustrated magnetic interactions in an S=3/2 bilayer honeycomb lattice compound Bi3Mn4O12(NO3) | Matsuda, Masaaki; Dissanayake, Sachith; Abernathy, Douglas; Qiu, Yiming; Copley, John; Kumada, Nobuhiro; Azuma, Masaki | Inelastic neutron scattering study has been performed in an S=3/2 bilayer honeycomb lattice compound Bi 3Mn 4O 12(NO 3) at ambient and high magnetic fields [1]. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 529 | Observations of antiferromagnetic, antiferroelectric and ferroelastic orderings in honeycomb-lattice Mn2V2O7 | Wu, Hung-Cheng; Hsieh, Dong-Jie; Yen, Tsung-Wen; Sun, Po-Jung; Kakarla, D. Chandrasekhar; Her, Jim-Long; Matsuda, Y. H.; Chang, Chung-Kai; Chuang, Yu-Chun; Lai, Yen-Chung; Gooch, Melissa; Deng, Liangzi; Webber, Kyle; Chu, Ching (Paul) | Taking all of these comprehensive research findings into account, we suggest that Mn 2V 2O 7 is a unique multifunctional material with the coexistence of antiferromagnetic, antiferroelectric and ferroelastic orderings. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 530 | NMR study on the honeycomb-lattice antiferromagnet Na2Co2TeO6 | Yu, Weiqiang; Hu, Ze; Li, Yuan; Yao, Weiliang | Here we report our NMR studies on Na 2Co 2TeO 6 single crystals, and show rich properties revealed in this system both at zero field and at finite fields. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 531 | Cooperative liquid-like paramagnetic state in nanoengineered honeycomb lattice | Yumnam, George; Chen, Yiyao; Guo, Jiasen; Ambaye, Haile; Lauter, Valeria; Singh, Deepak | We demonstrate the realization of a liquid-like magnetic state, comprised of low integer and energetically forbidden high integer magnetic charges, in nanostructured magnetic honeycomb lattice of ultra-small, sub-12 nm, connecting elements. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 532 | Field induced phase transition in the classical honeycomb Gamma model | Tian, Zhongzheng; Fan, Zhijie; Saha, Preetha; Chern, Gia-Wei | In this work, we study the effects of magnetic field on the plaquette-ordered state. | Session 41: Quasi-2D Frustration: Honeycomb Lattice and Other Geometries |
| 533 | The power of typicality applied to magnetic molecules and low-dimensional quantum spin systems | Schnack, Juergen | The power of typicality applied to magnetic molecules and low-dimensional quantum spin systems | Session 42: Single Molecule Magnets |
| 534 | Effect of substrate on characteristics of the Mn3 dimer | Hooshmand, Zahra; Berkley, Rainier; Rahman, Talat | We present results of our spin-polarized density functional theory calculations of the adsorption and interactions of Mn 3 dimers on graphene and monolayer hexagonal boron nitride ( h-BN). | Session 42: Single Molecule Magnets |
| 535 | A DFT Study of Single-Molecule Magnets (Mn3 Dimers) | Berkley, Rainier; Hooshmand, Zahra; Yu, Jie-Xiang; Cheng, Hai-Ping; Rahman, Talat | A DFT Study of Single-Molecule Magnets (Mn3 Dimers) | Session 42: Single Molecule Magnets |
| 536 | Atomic-clock transition behavior in a Cr7Mn molecular nanomagnet | Joshi, Gajadhar; Nikolov, Ilija; Chen, Guanchu; Sava, Daniel; Timco, Grigore; Winpenny, Richard; Friedman, Jonathan | Atomic-clock transition behavior in a Cr7Mn molecular nanomagnet | Session 42: Single Molecule Magnets |
| 537 | Chemical Approaches to Quantum Information Science | von Kugelgen, Stephen; Laorenza, Daniel; Zadrozny, Joseph; Yu, Chung-Jui; Freedman, Danna | We harness this precise synthetic control towards the emerging challenge of quantum information science (QIS), in which we are creating and understanding qubits, the smallest unit of a QIS system. | Session 42: Single Molecule Magnets |
| 538 | The muon-fluorine interaction: a model quantum system for exploring decoherence | Blundell, Stephen; Wilkinson, John; Lang, Franz; Lancaster, Tom | We show that taking them properly into account allows one to model the data in greater quantitative detail, understand the stopping site more accurately, and explore how the quantum information held by the state decoheres into its environment. | Session 42: Single Molecule Magnets |
| 539 | Decoherence of Molecular Qubits: Insights From Quantum Many-Body Simulations | Chen, Jia; Hu, Cong; Stanton, John; Cheng, Hai-Ping; Zhang, Xiaoguang | A synthetic study of a series of vanadyl molecular qubits by Danna Freedman’s group found that the decoherence time decreases as size of molecule increases. | Session 42: Single Molecule Magnets |
| 540 | Counterintuitive Control of Molecular Magnetic Relaxation via Chemically Tunable Electron-Spin Baths | Moseley, Ian; Zadrozny, Joseph | This presentation will detail our efforts toward that knowledge by studying the spin-bath-to-molecule interaction via molecular chemistry and magnetic analysis. | Session 42: Single Molecule Magnets |
| 541 | Investigating the Magnetic Properties of the Giant Mn84 Torus | Chen, Dian-Teng; Hale, Ashlyn; Christou, George; Cheng, Hai-Ping | In this work, we investigate these interactions using first-principles calculations, from which a Heisenberg model is developed. | Session 42: Single Molecule Magnets |
| 542 | Adjustable coupling and in-situ variable frequency probe with loop-gap resonators for cw and pulse electron paramagnetic resonance spectroscopy up to X-band | Joshi, Gajadhar; Kubasek, James; Nikolov, Ilija; Sheehan, Brendan; Andrade Costa, Thomaz de; Allāo Cassaro, R. A.; Friedman, Jonathan | We have designed and tested an adjustable frequency and variable coupling EPR probe with loop-gap resonators (LGRs) that works at a temperature down to 1.8 K [4]. | Session 42: Single Molecule Magnets |
| 543 | A Very-Low-Cost Flexible Electron Spin Resonance Spectrometer for Molecular Nanomagnet Experiments | Collett, Charles; Friedman, Jonathan | I will present the spectrometer design along with benchmark results demonstrating its sensitivity and flexibility with two different combinations of cryostat and magnet, and discuss future experiments on molecular nanomagnets. | Session 42: Single Molecule Magnets |
| 544 | Skyrmion crystal from RKKY interaction mediated by 2DEG | Wang, Zhentao; Su, Ying; Lin, Shizeng; Batista, Cristian | In this work we show that the RKKY interaction mediated by a dilute (k F«1) 2D electron gas (2DEG) on a C 6 invariant lattice stabilizes a magnetic skyrmion crystal in the presence of magnetic field and easy-axis anisotropy. | Session 43: Skyrmion Crystals |
| 545 | Magnetic hedgehog lattices in noncentrosymmetric metals | Okumura, Shun; Hayami, Satoru; Kato, Yasuyuki; Motome, Yukitoshi | Here we investigate the ground state of an effective spin model with long-range interactions arising from the itinerant nature of electrons by variational calculations and simulated annealing. | Session 43: Skyrmion Crystals |
| 546 | Ordering in magnetic skyrmion lattices | Stidham, James; Pleimling, Michel | In this talk, we present recent results obtained using Langevin molecular dynamic simulations, based on a previously derived particle model of skyrmions. | Session 43: Skyrmion Crystals |
| 547 | Formation of square skyrmion lattice in a centrosymmetric magnet without geometrical frustration | Nguyen, Khanh; Nakajima, Taro; Yu, Xiuzhen; Gao, Shang; Hirschberger, Max; Yamasaki, Yuichi; Sagayama, Hajime; Nakao, Hironori; Peng, Licong; Nakajima, Kiyomi; Shibata, Kiyou; Takagi, Rina; Arima, Taka-hisa; Tokura, Yoshinori; Seki, Shinichiro | Here, we report the observation of square skyrmion lattice for a centrosymmetric non-frustrated tetragonal magnet GdRu 2Si 2 by performing resonant x-ray scattering and Lorentz TEM experiments. | Session 43: Skyrmion Crystals |
| 548 | Dramatic enhancement of the skyrmion phase-space of Cu2OSeO3 driven by high pressure | Deng, Liangzi; Wu, Hung-Cheng; Litvinchuk, Alexander; Yuan, Noah; Lee, Jey-Jau; Dahal, Rabin; Fu, Liang; berger, helmuth; Yang, Hung-Duen; Wu, Zheng; Gooch, Melissa; Chu, Paul C. W. | We have expanded and enhanced the skyrmion phase region from the small range of (55-58.5 K) to (5-300 K) in single crystal Cu 2OSeO 3 by pressures up to 42.1 GPa through a series of phase transitions from the cubic P2 13, through orthorhombic P2 12 12 1 and monoclinic P2 1, and finally to the triclinic P1 phase, using our newly developed ultrasensitive high pressure magnetization technique. | Session 43: Skyrmion Crystals |
| 549 | Detection of magnetic skyrmion tubes in cubic B20 FeGe nanostructures | Mathur, Nitish; Stolt, Matthew; Yasin, Fehmi; Rybakov, Philipp; Kiselev, Nikolai S.; Yu, Xiuzhen; Jin, Song | Detection of magnetic skyrmion tubes in cubic B20 FeGe nanostructures | Session 43: Skyrmion Crystals |
| 550 | Spectroscopic-imaging STM measurement of magnetic skyrmions in a centrosymmetric crystal | Yasui, Yuuki; Butler, Christopher; Nguyen, Khanh; Nomoto, Takuya; Hayami, Satoru; Hanaguri, Tetsuo; Motome, Yukitoshi; Arita, Ryotaro; Arima, Taka-hisa; Tokura, Yoshinori; Seki, Shinichiro | We performed spectroscopic-imaging scanning tunneling microscopy (SI-STM) measurements for a centrosymmetric crystal GdRu 2Si 2, which is expected to host magnetic skyrmions. | Session 43: Skyrmion Crystals |
| 551 | Helical and skyrmion phases in amorphous Fe-Ge thick films | Chen, Xiaoqian; Streubel, Robert; Bouma, Dinah Simone; Koch, Roland; Kevan, Stephen; Hellman, Frances; Fischer, Peter; Roy, Sujoy | We studied amorphous Fe-Ge films using coherent resonant soft x-ray scattering. | Session 43: Skyrmion Crystals |
| 552 | Observation of Robust Néel Skyrmions in Metallic PtMnGa | Srivastava, Abhay Kant; Devi, Parul; Sharma, Ankit; Ma, Tianping; Deniz, Hakan; Meyerheim, Holger; Felser, Claudia; Parkin, Stuart | By contrast with skyrmions observed to date, we find that the skyrmion size in PtMnGa is strongly influenced by the thickness of the lamella in which the skyrmions are observed. | Session 43: Skyrmion Crystals |
| 553 | New low temperature phases in chiral cubic magnets | Pappas, Catherine; Qian, Fengjiao; Bannenberg, Lars; Labh, Ankit; Wilhelm, Heribert; Cubitt, Robert; Lelièvre-Berna, Eddy; Chaboussant, Gregory; DeBeer-Schmitt, Lisa; Schmidt, Marcus; Mostovoy, Maxim; Leonov, Andrey | We discuss the physical origin of this new state and suggest that it provides the in-homogeneous magnetic environment required to stabilise new low temperature skyrmionic phases. | Session 43: Skyrmion Crystals |
| 554 | Weak crystallization of fluctuating skyrmion textures in MnSi | Kindervater, Jonas; Stasinopoulos, Ioannis; Bauer, Andreas; Haslbeck, Franz Xaver; Rucker, Felix; Chacon, Alfonso; Mühlbauer, Sebastian; Franz, Christian; Garst, Markus; Grundler, Dirk; Pfleiderer, Christian | We report an experimental study of the emergence of non-trivial topological winding and long-range order across the paramagnetic to skyrmion lattice (SkL) transition in the transition metal helimagnet MnSi. | Session 43: Skyrmion Crystals |
| 555 | Surface Effects in the Magnetic Textures of B20 MnGe Thin Films | Repicky, Jacob; Corbett, Joseph; Liu, tao; Ahmed, Adam; Guerrero-Sanchez, Jonathan; Kawakami, Roland; Gupta, Jay | Using low-temperature (5K) spin-polarized scanning tunneling microscopy, we show that this magnetic texture is modified at the surface of MnGe thin films. | Session 43: Skyrmion Crystals |
| 556 | Equilibrium Skyrmions and Antiskyrmions in Strained Bulk Ferromagnets at Room Temperature | Kitchaev, Daniil; Van der Ven, Anton | We use phenomenological and symmetry arguments to identify simple strain fields which may stabilize chiral skyrmions over wide temperature ranges for all crystallographic point groups. | Session 43: Skyrmion Crystals |
| 557 | Investigating skyrmions using muon-spin spectroscopy | Lancaster, Tom; Balakrishnan, Geetha; Blundell, Stephen; Gomilsek, Matjaz; Hicken, Thomas; Huddart, Benjamin; Stefancic, Ales; Wilson, Murray | We present the results of muon-spin relaxation measurements on materials hosting a skyrmion lattice (SkL) phase. | Session 43: Skyrmion Crystals |
| 558 | Imaging the internal spin structures of skyrmions by Lorentz scanning transmission electron microscopy | Chen, Zhen; Xu, Teng; Fuchs, Gregory; Jiang, Wanjun; Muller, David | Magnetic skyrmions are noncollinear spin textures that have been detected and studied using many different techniques. | Session 43: Skyrmion Crystals |
| 559 | Harsh condition scanning probe microcopy vs. imaging detection of new magnetic structures and their topological protection | Lu, Qingyou | To this end, we have achieved high quality atomic resolution images in harsh and ultra-harsh conditions. | Session 44: Skyrmions in Oxide Materials and Heterostructures |
| 560 | Spin-Hall topological Hall effect in highly tunable Pt/ferrimagnetic-insulator bilayers | Yang, Fengyuan | We observe a prominent topological Hall effect in Pt/Tm 3Fe 5O 12 bilayers, where the pristine Tm 3Fe 5O 12 epitaxial films down to 1.25 unit cell thickness allow for tuning of topological Hall stability over a broad range from 200 to 465 K through atomic-scale thickness control [1]. | Session 44: Skyrmions in Oxide Materials and Heterostructures |
| 561 | Observation of room temperature polar skyrmions | Ramesh, Ramamoorthy | I will describe the discovery of polar skyrmions in a lead-titanate layer confined by strontium-titanate layers by atomic-resolution scanning transmission electron microscopy (STEM). | Session 44: Skyrmions in Oxide Materials and Heterostructures |
| 562 | Nonequilibrium Skyrmion Dynamics under Oscillating Magnetic Fields | Psaroudaki, Christina; Loss, Daniel | We generalize the standard quantum theory of dissipation to include the stochastic effects of the driven bath on the skyrmion dynamics. | Session 44: Skyrmions in Oxide Materials and Heterostructures |
| 563 | Planar Hall driven torque in a FM/NM/FM 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 45: Spin Dynamics in Low Dimensional Materials |
| 564 | Exciton-phonon damping in the two and three-dimensional anisotropic XY model | dos Santos Lima, Leonardo | Exciton-phonon damping in the two and three-dimensional anisotropic XY model | Session 45: Spin Dynamics in Low Dimensional Materials |
| 565 | Probing Spin-wave Excitations in Layered Chromium Trihalides with Nitrogen-Vacancy Magnetometers in Diamond | Xue, Ruolan; Ku, Mark; Klein, Dahlia; MacNeill, David; Taniguchi, Takashi; Watanabe, Kenji; Walsworth, Ronald; Jarillo-Herrero, Pablo; Yacoby, Amir | In this work, we report progress towards probing spin-wave excitations in chromium trihalides with NV magnetometry. | Session 45: Spin Dynamics in Low Dimensional Materials |
| 566 | Exceptional non-reciprocity in non-Hermitian spin dynamics | Galda, Alexey; Vinokur, Valerii | We consider spin-transfer torque-driven single-spin model described by a non-Hermitian Hamiltonian. | Session 45: Spin Dynamics in Low Dimensional Materials |
| 567 | Quantized ΔS=2 excitation spectra by confinement in an S=1 Ising spin chain under magnetic fields | Suga, Sei-ichiro; Suzuki, Takafumi | We calculate the dynamical spin-structure factor of the S = 1 Ising spin chain with negative single-ion anisotropy in transverse and longitudinal magnetic fields using the infinite time-evolving-block-decimation algorithm [1]. | Session 45: Spin Dynamics in Low Dimensional Materials |
| 568 | Spin dynamics in interacting ferromagnetic discs arranged on a Kagome lattice | Taghipour Kaffash, Mojtaba; Lendinez, Sergi; Bang, Wonbae; Hoffmann, Axel; Ketterson, John; Jungfleisch, Matthias Benjamin | Here, we report the experimental and theoretical characterization of angular-dependent spin dynamics in arrays of ferromagnetic nanodiscs arranged on a Kagome lattice. | Session 45: Spin Dynamics in Low Dimensional Materials |
| 569 | Magnetization reversal driven by low dimensional chaos in a nanoscale ferromagnet | Montoya, Eric; Perna, Salvatore; Chen, Yu-Jin; Katine, Jordan; d’Aquino, Massimiliano; Serpico, Claudio; Krivorotov, Ilya | In this talk, we experimentally demonstrate that low dimensional magnetic chaos [3] induced by alternating spin torque can strongly increase the rate of thermally-activated magnetic switching of the free layer in a magnetic tunnel junction (MTJ)[4]. | Session 45: Spin Dynamics in Low Dimensional Materials |
| 570 | Effects of Low-Atomic-Number Dopants on Magnetic Relaxation in Epitaxial Fe Alloys | Smith, David; Lim, Youngmin; Clavel, Michael; Jiang, Zijian; Hartnett, Tim; Hudait, Mantu; Heremans, Jean; Balachandran, Prasanna; Viehland, Dwight; Emori, Satoru | We investigate the dependence of magnetic relaxation on dopant concentration in epitaxial thin films of Fe 1-xV x and Fe 1-xAl x grown by magnetron sputtering. | Session 45: Spin Dynamics in Low Dimensional Materials |
| 571 | Spin dynamics in La0.67Sr0.33MnO3/YBa2Cu3O7-δ heterostructures | Wisser, Jacob; Riddiford, Lauren; Emori, Satoru; Suzuki, Yuri | In this study, we fix the LSMO thickness at 30 nm and vary the YBCO thickness from 2-17 nm. | Session 45: Spin Dynamics in Low Dimensional Materials |
| 572 | Tuning the dynamic behavior of a bicomponent artificial spin ice | Lendinez, Sergi; Taghipour Kaffash, Mojtaba; Jungfleisch, Matthias Benjamin | Here, we performed angular-dependent broadband ferromagnetic resonance measurements on a square ASI composed of different materials for each sublattice (NiFe and FeCo). | Session 45: Spin Dynamics in Low Dimensional Materials |
| 573 | Ab-initio spin-lattice dynamics based on the tight-binding method | Streib, Simon; Thonig, Danny; Pereiro, Manuel; Bergman, Anders; Sjöqvist, Erik; Delin, Anna; Eriksson, Olle | We present a method for the quasi-classical simulation of coupled spin and lattice dynamics in metallic magnets based on a tight-binding (TB) model. | Session 45: Spin Dynamics in Low Dimensional Materials |
| 574 | Enhancement of damping factor in Fe/Bi2Se3 heterostructures via topological surface states modification | na, li; Sun, Rui; Xu, Yang; Sun, Yunbin; He, Wei; Zhang, Xiangqun; Cheng, Zhaohua | Here, we report spin dynamics in Fe/Bi 2Se 3 heterostructures by changing thickness of Bi 2Se 3 with and without topological surface state (TSS). | Session 45: Spin Dynamics in Low Dimensional Materials |
| 575 | Strong voltage-induced tunability of threshold current and frequency in spin Hall nano-oscillators | Fulara, Himanshu; Zahedinejad, Mohammad; Khymyn, Roman; Dvornik, Mykola; Fukami, Shunsuke; Kanai, Shun; Ohno, Hideo; Akerman, Johan | Here we demonstrate how electrostatic gating in nano-constriction based W(5nm)/CoFeB(1.7nm)/MgO(2nm) SHNOs can lead to substantial voltage-controlled tunability of threshold current and auto-oscillation frequency. | Session 46: Spin Hall Effect |
| 576 | Large spin Hall effect in room-temperature sputtered W3Ta thin films grown on SiO2 and Al2O3 | Minhas, Mohsin Zamir; Grover, Bharat; Kostanovskiy, Ilya; Parkin, Stuart; Ali, Mazhar Nawaz | Here we report the SHE of W 4-xTa x films including W 3Ta, deposited by DC magnetron co-sputtering on SiO 2 and Al 2O 3 substrates. | Session 46: Spin Hall Effect |
| 577 | Critical spin fluctuation mechanism for the spin Hall effect | Okamoto, Satoshi; Egami, Takeshi; Nagaosa, Naoto | We propose mechanisms for the spin Hall effect in metallic systems arising from the coupling between conduction electrons and local magnetic moments that are dynamically fluctuating. | Session 46: Spin Hall Effect |
| 578 | Quantiative X-ray Imaging of Spin Accumulation due to the Spin Hall Effect in NixCu1-x Nanowires | Keller, Mark; Arora, Monika; Shaw, Justin; Silva, Thomas; Dassonneville, Bastien; Graefe, Joachim; Weigand, Markus | We recently reported a spin Hall ratio θ SH = 1.05 ± 0.18 in Ni 60Cu 40, an alloy that is nonmagnetic at room temperature, based on FMR measurements of unpatterned Ni 80Fe 20 films deposited in a bilayer with the alloy [1]. | Session 46: Spin Hall Effect |
| 579 | Mutually synchronized 2D spin Hall nano-oscillator arrays with quality factors up to 170,000 | Akerman, Johan; Zahedinejad, Mohammad; Awad, Ahmad; Muralidhar, Shreyas; Khymyn, Roman; Fulara, Himanshu; Mazraati, Hamid; Dvornik, Mykola | We fabricate 2D square SHNO arrays ranging from 2 x 2 to 10 x 10 constrictions and study their microwave signal properties in out-of-plane fields using both electrical measurements and Brillouin Light Scattering microscopy. | Session 46: Spin Hall Effect |
| 580 | Magnetization-Independent Spin Hall Effect in Ferromagnetic Metals | Mittelstaedt, Joseph; Buhrman, Robert; Ralph, Daniel | Here we report spin-torque ferromagnetic resonance measurements of current-induced torques in ferromagnet-spacer-ferromagnet trilayers with NiFe, Co and CoFeB as our magnetic layers, allowing us to clearly separate signals from the different ferromagnetic layers. | Session 46: Spin Hall Effect |
| 581 | Maximizing the spin Hall ratio of Pt: Trade-off between intrinsic spin Hall conductivity and carrier lifetime | Zhu, Lijun; Zhu, Lujun; Shi, Shengjie; Sui, Manling; Ralph, Daniel; Buhrman, Robert | This talk will report on an unambiguous determination of the intrinsic nature of spin Hall effect in Pt [1] and how the intrinsic spin Hall conductivity and spin Hall ratio of Pt varies with carrier lifetime, strain, and interruption of crystal order [2,3]. | Session 46: Spin Hall Effect |
| 582 | Spin pumping and non-uniform magnetic excitation in spin-torque FMR studies of the spin Hall effect | Tapping, Ryan; Ou, Yongxi; Vilela-Leão, Luis; Zhu, Lijun; Ralph, Daniel; Buhrman, Robert | Early on, spin-torque ferromagnetic resonance (ST-FMR) was used to establish an initially surprisingly strong spin Hall effect (SHE) in certain heavy metals (HM), and has since been widely deployed in the study of spin-orbit torques in HM/FM bilayers. | Session 46: Spin Hall Effect |
| 583 | Electrical Measurement of Thermally Driven Spin Hall Voltage in Platinum with Permalloy contacts | Park, Seondo; Park, Yun | Here, we report a surprisingly large magnetic-field dependent voltage (<800 nV) across two permalloy contacts on a platinum channel patterned into a cross shape, while in the orthogonal channel, electrical current is utilized to create local thermal gradient by Joule heating. | Session 46: Spin Hall Effect |
| 584 | Anomalous Spin Hall Effect in Iron Rhodium for Driving Spin Torque Oscillators | Gibbons, Jonathan; Dohi, Takaaki; Saglam, Hilal; pearson, john; Fukami, Shunsuke; Hoffmann, Axel | We present measurements of the spin torque efficiency in iron rhodium as the temperature is varied to drive the FeRh through its magnetic transition. | Session 46: Spin Hall Effect |
| 585 | Very high spin Hall conductivities and spin Hall ratios in epitaxial Iridium di-oxide films | BOSE, ARNAB; Nelson, Jocienne; Zhang, Xiyue; Jain, Raksit; Shi, Shengjie; Schlom, Darrell; Ralph, Daniel; Muller, David; Shen, Kyle; Buhrman, Robert | A particularly interesting candidate for such research is the metallic rutile oxide Iridium di-oxide which angle resolved photoemission spectroscopy studies have shown exhibits Dirac nodal lines in the band structure, a feature that could enable a very high . | Session 46: Spin Hall Effect |
| 586 | Extrinsic Spin Hall Effect in Inhomogeneous Systems | Funato, Takumi; Kohno, Hiroshi | In this work, we take a different approach and study the problem in terms of the extrinsic SHE in a inhomogeneous system. | Session 46: Spin Hall Effect |
| 587 | Large Spin Hall and Edelstein effects in Weyl semimetal WTe2 up to Room Temperature | Zhao, Bing; Khokhiriakov, Dmitrii; Karpiak, Bogdan; Hoque, Md Anamul; Dash, Saroj | Here, we report current-induced spin polarization, i.e. the spin Hall effect [1] and the Edelstein effect [2] and its inverse phenomenon in type-II Weyl semimetal WTe2 up to room temperature. | Session 46: Spin Hall Effect |
| 588 | Tuning dipolar interactions in artificial spin ices – From Ising to Potts spins | Montaigne, Francois; Louis, Damien; Massouras, Maryam; Hehn, Michel; Hauet, Thomas; Lacour, Daniel | In this talk, we introduce the dipolar 4-state Potts model. | Session 47: Spin Ice – From Freezing to Cerenkov Radiation |
| 589 | Slow dynamics in classical and quantum spin ice systems | Castelnovo, Claudio | This talk presents a selection of results and observations that highlight the uniquely rich, tunable and experimentally accessible playground to study slow dynamics in frustrated magnetism offered by spin ice systems. | Session 47: Spin Ice – From Freezing to Cerenkov Radiation |
| 590 | Machine learning assisted analysis of neutron scattering: new insights into spin ice | Tennant, David; Samarakoon, Anjana; Grigera, Santiago; Kirste, Alexander; Klemke, Bastian; Jaubert, Ludovic; Castelnovo, Claudio; Moessner, Roderich | From a combination of neutron scattering, magnetic noise, and thermodynamic measurements we have developed a model for the material using machine learning. | Session 47: Spin Ice – From Freezing to Cerenkov Radiation |
| 591 | Dimensional transmutation of quantum monopole dynaimcs | Udagawa, Masafumi | In this contribution, in order to understand the nature of magnetic monopoles, we address the anisotropic limit (J± << Jz) of spin-1/2 quantum XXZ model defined on a pyrochlore lattice. | Session 47: Spin Ice – From Freezing to Cerenkov Radiation |
| 592 | Spectroscopy of spinons in quantum spin ice: threshold enhancement and Cerenkov radiation | Morampudi, Siddhardh; Wilczek, Frank; Laumann, Christopher | In this talk, I will briefly review the basic theoretical picture of how a quantum Coulomb phase emerges in spin ice and then turn to recent results regarding the observable consequences in neutron scattering. | Session 47: Spin Ice – From Freezing to Cerenkov Radiation |
| 593 | Application of machine learning to frustrated magnets | Samarakoon, Anjana; Tennant, David | Conventional simulation approaches struggle to deal with the need to account for multiple and competing interactions, as well as relate models and data together. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 594 | Spin dynamics in stoichiometric Ho2Ti2O7 probed by neutrons in the time domain and magnetometry in the frequency domain | Wang, Yishu; Reeder, Timothy; Kindervater, Jonas; Karaki, Yoshitomo; Maliszewskyj, Nicholas; Gladchenko, Sergiy; Koohpayeh, Seyed; Nakatsuji, Satoru; Broholm, Collin | We describe an experimental investigation of classical spin ice dynamics in a new class of high quality Ho 2Ti 2O 7 single crystals. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 595 | Frequency Dependent Susceptibiltiy Measurements of Dilute Spin Ice. | Giblin, Sean; Billington, David; Riordan, Edward; Lhotel, Elsa; Paulsen, Carley; Bramwell, Steven | We have recently demonstrated in the classical spin ice materials Dy2Ti2O7 and Ho2Ti2O7 that the magnetic relaxation below the spin freezing transition is dominated by nuclear assisted tunnelling. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 596 | Fluence Dependent Modification of Spin Ice Physics in Ho2Ti2O7 Thin Films | Barry, Kevin; Anand, Naween; Xin, Yan; Neu, Jennifer; Siegrist, Theo; Beekman, Christianne | We investigate the effects of strain, substrate orientation, and disorder on spin ice physics in Ho 2Ti 2O 7 thin films grown on yttria-stabilized-zirconia substrates via pulsed laser deposition. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 597 | Polarized Neutron Scattering as a Probe of Emergent Gauge Structure in Classical Spin Ice | Chung, Kristian; Kang, Jeremy; Jin, Wen; Lozano-Gomez, Daniel; Mukherjee, Aritro; Gingras, Michel J | In fact, within an extended model of spin ice, the NSF channel is found to be completely dispersionless, and we explore this utilizing both Monte Carlo and Large-N techniques. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 598 | Anomalous magnetic behaviour of the mixed b-site pyrochlore Dy2ScNbO7 | Rutherford, Megan; Mauws, Cole; Aczel, Adam; Beare, James; Luke, Graeme; Marjerrison, Casey; Haravifard, Sara; Zhou, Haidong; Wiebe, Christopher | To explore the response of the spin ice state to non-magnetic perturbation in dysprosium based pyrochlores, we present here a new species Dy 2ScNbO 7, which we have synthesized as both powder and single crystal. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 599 | Long-range Coulomb interactions and nonhydrodynamic behavior in thermal quenches in spin ice | Hart, Oliver; Haroche, Marianne; Castelnovo, Claudio | We find that the long-range tail of the Coulomb interactions between monopoles plays a central role by suppressing the monopole-assisted decay of noncontractible pairs with respect to monopole–antimonopole annihilation. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 600 | Peering into the darkness: vison-generated photon mass in quantum spin ice | Kwasigroch, Michal | We achieve this by studying the ring-exchange Hamiltonian of quantum spin ice in the large-s approximation, taking into account the compact nature of the emergent U(1) gauge theory. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 601 | Broadband Spectroscopy of Magnetic Monopole Noise in Artificial Spin Ice | Goryca, Mateusz; Nisoli, Cristiano; Zhang, Xiaoyu; Leighton, Chris; Li, Jing; Balk, Andrew; Schiffer, Peter; Crooker, Scott | Here we present an all-optical method to study the spontaneous magnetization fluctuations in ASIs over a broad frequency range (1 Hz – 1 MHz), which allows us to investigate magnetization dynamics through temperature- and field-dependent phase transitions. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 602 | New Vertex Type to Study Phase Transition in Artificial Spin Ices | Frotanpour, Ali | New Vertex Type to Study Phase Transition in Artificial Spin Ices | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 603 | Hall Responses in Larger Spin Quantum Magnets | Romhanyi, Judit; Penc, Karlo | We consider magnetic insulators characterized by a larger spin and therefore by spin-multipolar degrees of freedom. | Session 48: Spin Ice: Classical, Quantum, and Artificial |
| 604 | Collective excitations of a magnetized U(1) spin liquid. | Starykh, Oleg | In this talk, I focus on the prominent metal-like magnetic insulators – U(1) quantum spin liquids with spinon Fermi surface – excitations of which are represented by neutral spin-1/2 fermions (spinons) and emergent gauge fields. | Session 49: Spin Liquids: Theory and Experiment |
| 605 | Entangled Neutron Beams: A possible new avenue to exploring Quantum Materials | Baxter, David; Broholm, Collin; Irfan, abu ashik; Kuhn, Stephen; Lu, Shufan; Ortiz, Gerardo; Pynn, Roger; Shen, Jiazhou; Snow, William | We have recently demonstrated that the Larmor instrument at ISIS can be used to construct two and three-fold entangled states in a neutron beam [1]. | Session 49: Spin Liquids: Theory and Experiment |
| 606 | 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; Rene de Cotret, Samuel; Gordon, Ryan; 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 49: Spin Liquids: Theory and Experiment |
| 607 | Evidence of Frozen Moments at Low T in κ-(BEDT-TTF)2Hg(SCN)2Br | Le, Teresa; Pustogow, Andrej; Wang, Jierong; Henderson, Alyssa; Schlueter, John; Brown, Stuart | We examine the magnetic properties of κ-HgBr using 13C NMR Spectroscopy. | Session 49: Spin Liquids: Theory and Experiment |
| 608 | Understanding Complex Magnetic Interactions Using Diffuse Neutron Scattering | Paddison, Joseph | I discuss an alternative approach to parameterize the spin Hamiltonian that does not assume long-range magnetic order: fitting interaction models to diffuse magnetic neutron-scattering data measured above T N. I demonstrate the sensitivity of this method for canonical models of bond-dependent interactions on triangular and honeycomb lattices. | Session 49: Spin Liquids: Theory and Experiment |
| 609 | Effects of nuclear spins in the transverse-field Ising quantum magnet Ho3Mg2Sb3O14 | Mourigal, Martin; Dun, Zhiling; Bai, Xiaojian; Paddison, Joseph; Hollingworth, Emily; Demmel, Franz; Zhou, Haidong | Transverse Ising model is the simplest quantum model which can be realized in rare earth magnets with two-singlet crystal field ground state. | Session 49: Spin Liquids: Theory and Experiment |
| 610 | Robust quantum spin liquid ground state in hydrogen-bonded organic Mott insulators | Hashimoto, Kenichiro; Shimozawa, Masaaki; Yamashita, Minoru; Ueda, Akira; Mori, Hatsumi; Sasaki, Takahiko | Here, we investigate a series of κ-H 3(Cat-X) 2 (X = EDT-TTF, EDT-ST, EDT-d4-TTF, and EDSe-TTF), where the substitution of X affects the anisotropy of the triangular lattice as well as the hydrogen-bond dynamics. | Session 49: Spin Liquids: Theory and Experiment |
| 611 | Coherent spinon behaviour in quantum spin liquids at finite temperature | Wan, Yuan; Hart, Ollie; Castelnovo, Claudio | We consider toy models for Z2 quantum spin liquids, where the two species of excitation (dubbed spinons and visons) are mutual semions. | Session 49: Spin Liquids: Theory and Experiment |
| 612 | Finite temperature dynamics of Coulomb spin liquids | Morampudi, Siddhardh; Laumann, Christopher; Wilczek, Frank | We compute the dynamics of spinons and photons at non-zero temperatures in multiple regimes realizable in neutron scattering and show characteristic changes as temperature is tuned across the different regimes. | Session 49: Spin Liquids: Theory and Experiment |
| 613 | Schwinger boson approach to magnetically ordered quantum magnets | Zhang, Shang-Shun; Ghioldi, Esteban; Kamiya, Yoshitomo; Manuel, Luis; Trumper, Adolfo; Batista, Cristian | By considering a Schwinger boson theory (large- N approach) beyond the saddle-point approximation ( N = ∞), we demonstrate that the inclusion of 1/ N corrections is strictly necessary to remove unphysical modes (single-spinon poles) and to capture the true magnon modes, which emerge as two-spinon bound states (poles of the RPA propagator). | Session 49: Spin Liquids: Theory and Experiment |
| 614 | Theoretical proposal for novel experimental probe of fractionalized excitations in two-dimensional quantum spin liquids | Choi, Wonjune; Lee, Ki; Kim, Yong-Baek | In this talk, we discuss a novel experimental protocol to identify the sharp coherent signals of each of the individual spinons to disambiguate quantum spin liquids from trivial paramagnets or magnon excitations. | Session 49: Spin Liquids: Theory and Experiment |
| 615 | Effective theories for quantum spin clusters : State selection by singularity | Khatua, Subhankar; Sen, Diptiman; Ramachandran, Ganesh | We state a general principle — the low energy effective theory of a quantum spin cluster reduces to that of a quantum particle moving on the space of classical ground states. | Session 49: Spin Liquids: Theory and Experiment |
| 616 | Density Matrix Renormalization Group Analysis of Quantum Spin Ice | Flynn, Michael; Baker, Thomas; Singh, Rajiv | Here we initiate the use of the Density Matrix Renormalization Group (DMRG) to study the phase diagram of quantum spin ice, focusing on the transition from an XY antiferromagnet to a U(1) spin liquid. | Session 49: Spin Liquids: Theory and Experiment |
| 617 | Extracting spin-orbit coupling strength using realistic device simulations | Nijholt, Bas; Winkler, Georg; Vayrynen, Jukka; Wang, Guanzhong; De Lange, Gijs; Binci, Luca; Bordin, Alberto; Lutchyn, Roman | We do realistic device simulations of semiconductor nanowires and calculate the weak antilocalization correction. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 618 | Far out-of-equilibrium spin populations trigger giant spin injection into atomically thin MoS2 | Chia, Ee Min | In Co/MoS 2, by making use of the strongly out-of-equilibrium character of the injected spins, we demonstrate a highly-efficient spin injection from a ferromagnet (Co) into a semiconductor (MoS 2), thus overcoming the crippling problem of impedance mismatch. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 619 | Introducing CVD WS2 in Magnetic Tunnel Junctions | Zatko, Victor; Galbiati, Marta; Dubois, Simon; Och, Mauro; Mattevi, Cecilia; Brus, Pierre; Bezencenet, Odile; Martin, Marie-Blandine; Servet, Bernard; Charlier, Jean-Christophe; Godel, Florian; Petroff, Frédéric; Fert, Albert; Dlubak, Bruno; Seneor, Pierre | Here, we will present results on the scarcely studied WS 2 2D semiconductor for spintronics. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 620 | Defect induced magnetism in monolayer semiconducting PtSe2 | Avsar, Ahmet; Cheon, Cheol-Yeon; Pizzochero, Michele; Ciarrocchi, Alberto; Yazyev, Oleg; Kis, Andras | Here, we will present our magneto-transport measurements together with first-principles calculations which clearly demonstrate that Pt vacancy defect yields an antiferro- (ferro-)magnetic ordering in mono (bi-)layer PtSe 2. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 621 | Weak anti-localization in undoped Ge/GeSn heterostructures | Li, Jiun-Yun; Tai, Chia-Tse; Lin, Cheng-Yu; Liu, Chia-You; Wang, Tz-Ming; Harris, Charles; Lu, Tzu-Ming | In this work, we demonstrate weak anti-localization (WAL) in undoped Ge/GeSn heterostructures. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 622 | Magnetic order and anisotropy at 3d ferromagnet/2D material heterojunctions | Wei, Der-Hsin; Lu, Chun-I; Huang, Chih-Heng; Lan, YannWen; Kuo, Chien-Chen; Chuang, Tzu-Hung | I will present the experimental data followed by a brief discussion. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 623 | Spin-to-charge interconversion in van der Waals heterostructures | Safeer, CK | Using a similar approach, we observed large multidirectional SCC in Weyl semimetal MoTe 2. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 624 | Two-dimensional spin-valley locking spin valve | Tao, Lingling; Tsymbal, Evgeny | Here, we propose exploiting the spin-valley locking in 2D materials with a large spin-orbit coupling and electric field reversible valley spin polarization, such as germanene, stanene, a 1T′ transition metal dichalcogenide (TMDC) monolayer, and a 2H-TMDC bilayer, to realize a valley spin valve (VSV). | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 625 | Group-IV tellurides as a route towards all-in-one spin transistors | Slawinska, Jagoda; Cerasoli, Frank; Gopal, Priya; Curtarolo, Stefano; Buongiorno Nardelli, Marco | We propose this mechanism as an operation principle of an all-in-one spin transistor, in which spin injection/detection can be accomplished via spin Hall effects. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 626 | Atomically-resolved theory of the magnitude of the bulk Rashba effect | Mera, Carlos; Ogoshi, Elton; Fazzio, Adalberto; Dalpian, Gustavo M.; Zunger, Alex | We find an intrinsic separation between strong Rashba effect associated with anti-crossing bands, and weak Rashba effect associated with no anti-crossing bands. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 627 | All-electrical creation and control of giant spin-galvanic effect in 1T′-MoTe2/graphene heterostructures at room temperature | Hoque, Md Anamul; Khokhriakov, Dmitrii; Karpiak, Bogdan; Dash, Saroj | Here, we exploit a proximity-induced Rashba-Edelstein (REE) effect in vdW heterostructures of Weyl semimetal candidate MoTe 2 and CVD graphene, where an unprecedented gate-controlled switching of spin-galvanic effect emerges due to an efficient spin-to-charge conversion at room temperature [1]. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 628 | Highly tunable nonlinear Hall effects induced by spin-orbit couplings in strained polar transition-metal dichalcogenides | Zhang, Cheng-Ping; Zhou, Tong; Law, Kam Tuen | In this work, we show that in strained polar transition-metal dichalcogenides(TMDs) with 2H-structures, Berry curvature dipoles created by spin degrees of freedom lead to strong nonlinear Hall effects. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 629 | Research on the valley-related properties based on multilayer transition metal dichalcogenides | Guan, Hongming; Tang, Ning; Zhang, Xiaoyue; Liu, Xingchen; Ge, Weikun; Shen, Bo | In this report, by utilizing the ionic liquid (IL) covering on top of the multilayer TMDC samples, the spatial-inversion symmetry is broken by the out-of-plane electric field induced by IL. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 630 | The Electronic Properties of Quasi-One-Dimensional TiS3 and ZrS3 | Gilbert, Simeon; Yost, Andrew; Li, Mingxing; Yi, Hemian; Lipatov, Alexey; Komesu, Takashi; Avila, José; Sinitskii, Alexander; Wang, Jian; Asensio, Maria; Dowben, Peter | Here we present our work on the electronic properties of two TMTs, TiS 3 and ZrS 3, including the experimental band structure from nanospot angle resolved photoemission spectroscopy (nanoARPES). | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 631 | Origin of Magnetism in undoped and Ta doped anatase TiO2 free-standing films | Devi, Sonu; Venkatesan, Thirumalai | We have found a strong linear correlation between the observed magnetism and Ta-doping, in addition to an intrinsic contribution. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 632 | Efficient intrinsic spin-to-charge current conversion in an all-epitaxial single-crystal perovskite-oxide heterostructure of La0.67Sr0.33MnO3/LaAlO3/SrTiO3 | Ohya, Shinobu; Araki, Daisei; Duc Anh, Le; Kaneta, Shingo; Seki, Munetoshi; Tabata, Hitoshi; Tanaka, Masaaki | Here, we demonstrate efficient intrinsic spin-to-charge current conversion in an all-epitaxial single-crystal heterostructure of La 0.67Sr 0.33MnO 3/LAO/STO, which can suppress spin scattering and give us an ideal environment to investigate intrinsic spin-charge conversion. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 633 | Magnetic proximity effects in vdW heterostructures of layered materials | Gobbo, Jacob; Muzzio, Ryan; Pinchuk, Igor; Katoch, Jyoti; Singh, Simranjeet | In this talk, we will present our preliminary results in the direction of probing magnetic proximity effects in vdW based heterostructures of 2D-magnetic systems and transition metal dichalcogenides (TMDs). | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 634 | Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene. | Karpiak, Bogdan; Cummings, Aron; Zollner, Klaus; Vila, Marc; Khokhriakov, Dmitrii; Hoque, Md Anamul; Dankert, André; Svedlindh, Peter; Fabian, Jaroslav; Roche, Stephan; Dash, Saroj | By investigating the the van der Waals heterostructures of the ferromagnetic insulator Cr 2Ge 2Te 6 and graphene, we observe an out-of-plane proximity-induced ferromagnetic exchange interaction in graphene 1. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 635 | Novel Exciton Condensation and Lorenz Number in Graphene | Nam, Sang-Boo | We present a novel condensation of boson (exciton = electron + hole) in 2 dimension at the temperature Tc = (6/π 2 ) ½ T F (fermi temperature). | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 636 | Giant spin-layer locking in novel two-dimensional X2Bi2 (X=Si, Ge, or Sn) | Lee, Seungjun; Kwon, Young-Kyun | Here, we propose novel two-dimensional materials X 2Bi 2 (X=Si, Ge, or Sn), which exhibit spin-layer locking with giant Rashba parameter value (α_R≤12.3 eV nm). | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 637 | Edgetronic and spintronic applications of carbon phosphide nanoribbon | cao, liemao; Ang, Yee Sin; Wu, Qingyun; Ang, Lay Kee | In this work, we study the electronic and transport properties of CP nanoribbons in α-phase with different edge configurations using first-principle density functional theory simulation. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 638 | Rashba spin splitting and perpendicular magnetic anisotropy of Gd-adsorbed zigzag graphene nanoribbon modulated by edge states under external electric fields | Qin, Zhenzhen; Qin, Guangzhao; Shao, Bin; Zuo, Xu | Our study introduces a new strategy to manipulate Rashba spin splitting by edge states and provides new insight into the magnetic anisotropy in 1D Rashba system. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 639 | Observation of Giant Optical Linear Dichroism and Pseudo Critical Slowing Down in van der Waals Zigzag Antiferromagnets | Hwangbo, Kyle; Zhang, Qi; Jiang, Qianni; Xiao, Di; Chu, Jiun-Haw; Xu, Xiaodong | Here, we report an optical study of an atomically thin zigzag antiferromagnet, FePS 3. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 640 | Ferromagnetism in multilayered graphite nanostructures doped with nitrogen | Manukyan, Aram; Gyulasaryan, Harutyun; Sharoyan, Eduard; Oyala, Paul; Bernal, Oscar; Kocharian, Armen | We found that the temperature dependences of saturation magnetization closely follow the behavior of integrated magnetic resonance intensity. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 641 | Modulating electronic and magnetic properties of ferromagnetic Hf2MnC2O2 MXenes | Siriwardane, Edirisuriya; Karki, Pragalv; Loh, Yen Lee; Cakir, Deniz | In this work, density functional theory calculations were carried out to evaluate the electronic and magnetic properties of the uniaxial and biaxial strains applied, and surface defects introduced Hf2MnC2O2 ferromagnetic MXene. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 642 | Raman signatures on a van der Waals antiferromagnet | Cho, Yujin; Ghosh, Subhajit; Zhao, Zhangji; Hu, Chaowei; Kang, Jin; Kargar, Fariborz; Ni, Ni; Balandin, Alexander; Wong, Chee Wei | In this project, we will correlate the optical Raman spectrum on MnBi 2Te 4 with its magnetic transition temperature (~25K) and the in-plane magnetic anisotropy. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 643 | Detection of Spin Canting Using Magnetic Field Modulated Microwave Spectroscopy. | Hojem, Alex; Wampler, James; Schuller, Ivan | Other work has shown that a magnetic response in a similar microwave spectroscopy technique can be caused by spin canting[2]. | Session 50: Spin Phenomena in Nonmagnetic 2D Materials |
| 644 | Topological Insulator/Magnetic Insulating Oxide: A Platform for Efficient Spin Current Transport | Li, Peng; Zhang, Steven; Riddiford, Lauren; Pillsbury, Timothy; Ding, Jinjun; Kally, James; Grutter, Alexander; Rimal, Gaurab; Bi, Chong; Csaba, Gyorgy; Jiang, J; Ding, Junjia; Zhang, Wei; Tang, Jinke; Wang, Weigang; Heinonen, Olle; Novosad, Valentyn; Hoffmann, Axel; Samarth, Nitin; Suzuki, Yuri; Wu, Mingzhong | Here we discuss experiments that identified bona fide surface state-induced spin-orbit torques in topological insulator/magnetic oxide bilayers. | Session 51: Spin Phenomena in Topological Insulators |
| 645 | Nonlinear Hall effect in topological insulator-ferromagnet heterostructures | Wang, Yang; Wang, Yong; Wang, Tao; Ou, Yu-Sheng; Ji, Yi; Doty, Matthew; Nikolic, Branislav; Law, Stephanie; Xiao, John | Here, we report current-nonlinear Hall effect in Bi 2Se 3/CoFeB heterostructures measured by second harmonic Hall voltage method, which is commonly used to extract SOTs in TI/FM bilayers. | Session 51: Spin Phenomena in Topological Insulators |
| 646 | Nonlinear planar Hall effect | He, Pan; Zhang, Shulei; Zhu, Dapeng; Shi, Shuyuan; Heinonen, Olle; Vignale, Giovanni; Yang, Hyunsoo | We report the discovery of a new type of Hall effect in a TI Bi 2Se 3 film [1]. | Session 51: Spin Phenomena in Topological Insulators |
| 647 | Nonlinear Hall signatures of ferroelectric switching in atomically thin WTe2 | Zhou, Benjamin T.; Zhang, Cheng-Ping; Gao, Xuejian; Kang, Kaifei; Mak, Kin Fai; Law, Kam Tuen | In this work, we demonstrate that the direction and magnitude of nonlinear Hall currents can be highly sensitive to the ferroelectric polarization in WTe 2. | Session 51: Spin Phenomena in Topological Insulators |
| 648 | Magnetization control of ferromagnetic materials based on topological insulator Sb2Te3 sputtered thin films | Ferreira Teixeira, Sofia; Vanstone, Alexander; Pires, Ana L.; Branford, Will; Araújo, João; Cohen, Lesley; Pereira, André | In this paper, the structural and electrical properties of a uniform nanocrystalline Sb 2Te 3 thin film fabricated by ion beam sputtering will be reported. | Session 51: Spin Phenomena in Topological Insulators |
| 649 | Persistence of spin memory in the insulating state of the crystalline phase-change material SnSb2Te4 revealed by magnetotransport measurements | Breznay, Nicholas; Reindl, Johannes; Volker, Hanno; Wuttig, Matthias | We find an unexpected spin sensitive hopping conductivity in the phase change material SnSb 2Te 4 that can be tuned with disorder. | Session 51: Spin Phenomena in Topological Insulators |
| 650 | Observation of magnetoresistance effects in a heterostructure of Bi2Se3 and a ferromanget with perpendicular magnetic anisotropy | Oh, Junseok; Humbert, Vincent; Sklenar, Joseph; Basa, Bora; Gilbert, Matthew; Mason, Nadya | We report magnetoresistance (MR) signals in a heterostructure of 3D TI Bi 2Se 3 and Co/Pt multilayer with perpendicular magnetic anisotropy. | Session 51: Spin Phenomena in Topological Insulators |
| 651 | Bi-linear magnetoresistance in surface states of topological insulator: the role of Rashba-Edelstein effect and relaxation processes | Dyrdal, Anna; Barnas, Jozef; Fert, Albert | We will present our recent study on BMR of surface electronic states in TIs and in 2D Rashba gas [2]. | Session 51: Spin Phenomena in Topological Insulators |
| 652 | Nonreciprocal second harmonic generation in CuB2O4 | Toyoda, Shingo; Fiebig, Manfred; Arima, Taka-hisa; Tokura, Yoshinori; Ogawa, Naoki | In this study, we have investigated nonreciprocity of second harmonic generation. | Session 51: Spin Phenomena in Topological Insulators |
| 653 | Magnetic torque of holmium antimonide topological semimetal | Poudel, Narayan; Hosen, M. Mofazzel; Kaczorowski, Dariusz; Neupane, Madhab; Gofryk, Krzysztof | In order to account for this issue, we have initiated detailed studies of magnetic torque of HoSb along the three crystallographic directions, and in the antiferromagnetic and paramagnetic phases. | Session 51: Spin Phenomena in Topological Insulators |
| 654 | Large Spin-to-Charge Conversion Induced by Hybrid Rashba- and Surface-State in Topological Insulator Heterostructures | Sun, Rui; Yang, Shijia; Xu, Yang; Vetter, Eric; Sun, Dali; na, li; Su, Lei; Li, Yan; Li, Yang; Gong, Zizhao; Xie, Zongkai; Gul, Qeemat; He, Wei; Zhang, Xiangqun; Cheng, Zhaohua | We found that λ IEE alters as a function of bismuth interlayer thickness, suggesting a new degree of freedom to manipulate λ IEE by engineering the interplay of Rashba and Dirac surface states. | Session 51: Spin Phenomena in Topological Insulators |
| 655 | Topological Magnetic-Spin Structures in Two-Dimensional Van Der Waals Cr2Ge2Te6 | Han, Myung-Geun; Garlow, Joseph; Liu, Yu; Zhang, Huiqin; DiMarzio, Donald; Knight, Mark; Petrovic, Cedomir; Jariwala, Deep; Zhu, Yimei | Using direct imaging by cryo-Lorentz transmission electron microscopy we report that topologically nontrivial magnetic-spin states, skyrmionic bubbles, can be realized in exfoliated insulating 2D van der Waals Cr 2Ge 2Te 6. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 656 | Multiple ferromagnetic transitions and structural distortion in the van der Waals ferromagnet VI3 at ambient and finite pressures | Gati, Elena; Inagaki, Yuji; Kong, Tai; Cava, Robert; Furukawa, Yuji; Bud’ko, Sergey; Canfield, Paul | Here, we present a thermodynamic (specific heat and magnetization) and microscopic NMR study on bulk single crystals of the recently discovered ferromagnetic vdW material VI 3 at ambient and finite pressures [1]. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 657 | First principles Calculation of Dzyaloshinskii–Moriya interaction in 2D magnetic van der Waals heterostructures | Huang, Kai; Shao, Ding-Fu; Tsymbal, Evgeny | Here, we predict the emergence of a large DMI in bilayer magnetic van der Waals heterostructures composed of a 2D ferromagnetic metal Fe 3GeTe 2 monolayer and a nonmagnetic monolayer. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 658 | Realization of very large Dzyaloshinskii-Moriya interaction and skyrmion states in two-dimensional Janus manganese dichalcogenides | Liang, Jinghua; wang, weiwei; Du, Haifeng; Chshiev, Mairbek; Fert, Albert; Yang, Hongxin | In this report, we perform first-principles calculations to demonstrate that significant DMI can be obtained in a series of Janus monolayers of manganese dichalcogenides MnXY (X/Y = S, Se, Te, X ≠ Y) in which the difference between X and Y on the opposites sides of Mn breaks the inversion symmetry. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 659 | Topological Spin Textures in Janus Monolayers of Chromium Trihalides Cr(I,X)3 | Xu, Changsong; Feng, Junsheng; Nahas, Yousra; Prohorenko, Sergei; Xiang, Hongjun; Bellaiche, Laurent | Here we propose the fabrication of Cr(I,X) 3 Janus monolayers, in which the Cr atoms are covalently bonded to the underlying I ions and top-layer Br or Cl atoms. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 660 | Electrical excitation of superfluid- and string-like domain wall modes in layered van der Waal antiferromagnets | Rahman, Mohammad Mushfiqur; Rustagi, Avinash; Tserkovnyak, Yaroslav; Upadhyaya, Pramey | Motivated by these developments, we theoretically demonstrate the electrical excitation of superfluid- and string-like modes harbored by the antiferromagnetically coupled domain walls of bilayer CrI3. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 661 | Merons in Monolayer CrCl3 | Lu, Xiaobo; Fei, Ruixiang; Yang, Li | Here, using first principles and Monto Carlo simulations, we propose that monolayer chromium chloride (CrCl 3) can be a promising candidate to observe paired magnetic vortex type and antivortex type topological defects, which are so-called merons. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 662 | Anomalous spin-Hall effect in 2D Cr-based materials | Dahnovsky, Yuri; Zadorozhnyi, Andrei | We study the THE in various systems on 2D magnetic materials (CrIS 3, CrCl 3, and CrBr 3). | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 663 | Skyrmions in TMD-based antiferromagnetic triangular lattices | Raeliarijaona, Aldo; Fang, Wuzhang; Chang, Po-Hao; Belashchenko, Kirill; Kovalev, Alexey | We study the adsorption of magnetic transition metal atoms (Cr, Mn, Fe, and Co) on top of a TMDs such as MoS2 or WSe2, where the transition metal atoms form a triangular lattice. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 664 | Chirally coupled nanomagnets | Luo, Zhaochu; Dao, Trong Phuong; Hrabec, Aleš; Vijayakumar, Jaianth; Kleibert, Armin; Baumgartner, Manuel; Kirk, Eugenie; Cui, Jizhai; Savchenko, Tatiana; Krishnaswamy, Gunasheel; Heyderman, Laura; Gambardella, Pietro | In this work, we demonstrate an alternative method to control the lateral coupling between adjacent magnetic nanostructures [3] based on the interfacial Dzyaloshinskii-Moriya interaction (DMI). | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 665 | Tuning Magnetic Order with Iron Intercalation in Transition Metal Dichalcogenides | John, Caolan; Doyle, Spencer; Maniv, Eran; Analytis, James | I will present magnetization and thermodynamic measurements that indicate antiferromagnetic order in iron intercalated NbS 2. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 666 | Electrical switching in a magnetically intercalated transition metal dichalcogenide | Maniv, Eran; Nair, Nityan; John, Caolan; Doyle, Spencer; Orenstein, Joseph; Analytis, James | Here, we present measurements on the intercalated TMD Fe 1/3NbS 2 which exhibits antiferromagnetic ordering below 42K. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 667 | 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 M; Podlesnyak, Andrey; Wu, Yan; Cao, Huibo; Tennant, David; Schmidt, Kai; Wessel, Stefan | Here we present a comprehensive neutron scattering study on a spin-1/2 coupled ladder antiferromagnet C 9H 18N 2CuBr 4 (DLCB for short) under applied hydrostatic pressure. | Session 52: Spin Textures and Chiral Magnetism in 2D Materials |
| 668 | Ultra-low-power switching of IrMn/CoFeB/MgO structure with voltage-controlled spin-orbit torque | Peng, Shouzhong; Lu, Jiaqi; Li, Weixiang; Wang, Lezhi; Zhang, He; Kang, Wang; Wang, Zhaohao; Li, Xiang; Wang, Kang-Lung | Here we experimentally demonstrate the ultra-low-power and field-free switching of perpendicular magnetization by a combination of spin-orbit torque (SOT) and voltage-controlled magnetic anisotropy effect. | Session 53: Spin Textures at Magnetic Multilayers |
| 669 | Electrical noise in magnetic tunnel junctions due to magneto-structural transitions of CoFeB/MgO interfaces | Etesamirad, Arezoo; Nelson, David; Dailey, Keanuhea; Katine, Jordan; Krivorotov, Ilya; Barsukov, Igor | Here, we study MTJ nanopillars of 50 nm diameter consisting of CoFeB free layer, MgO tunnel barrier, and CoFe based synthetic antiferromagnet. | Session 53: Spin Textures at Magnetic Multilayers |
| 670 | Finite-size Kosterlitz-Thouless transition in Fe/W(001) ultrathin films | Venus, David; Atchison, Jordan; Bhullar, Amanjot; Norman, Bryce | We report MOKE magnetic susceptibility measurements χ(T) of 4-fold in-plane ultrathin Fe/W(001) films, where a prominent peak is observed. | Session 53: Spin Textures at Magnetic Multilayers |
| 671 | Spin-Orbit-Torque Field-Effect Transistor (SOTFET): A New Magnetoelectric Memory | Li, Xiang; Dang, Phillip; Casamento, Joseph; Zhang, Zexuan; Afuye, Olalekan; Apsel, Alyssa; Schlom, Darrell; Jena, Debdeep; Ralph, Daniel; Xing, Huili | In this work, we propose and analyze the spin-orbit-torque field-effect transistor (SOTFET), a device with the potential to significantly boost the energy efficiency of spin-based memories, and to simultaneously offer a palette of new functionalities. | Session 53: Spin Textures at Magnetic Multilayers |
| 672 | Pulsed or Microwave Currents Induced Random Telegraph Signal in a Magnetic Tunnel Junction | Rajapakse, Rajapaksayalage; Penthorn, Nicholas; Hao, Xiaojie; Wang, Zihui; Huai, Yiming; Jiang, HongWen | Recent work has shown creation and dynamics of magnetic skyrmions, without the Dzyaloshinskii-Moriya interaction, in the free layer of a magnetic tunnel junction (MTJ) at a temperature of 4K [1]. | Session 53: Spin Textures at Magnetic Multilayers |
| 673 | Controlling long-range skyrmion lattices using field and temperature in Fe/Gd multilayers | DeBeer-Schmitt, Lisa; Desautels, Ryan; Tang, Nan; Montoya, Sergio; Liyanage, W; Patel, Sheena; Fitzsimmons, Michael; Fullerton, Eric; Borchers, Julie; Gilbert, Dustin | Using small angle neutron scattering (SANS), we demonstrated that once formed these dipole skyrmions are stable over a large field and temperature range including zero field and room temperature. | Session 53: Spin Textures at Magnetic Multilayers |
| 674 | Multi-probe, laser-scanning optical microscopy for investigation of novel magnetic domain structures and boundaries | Kaczmarek, Austin; Zhao, Liuyan | In this talk, I will present our development of a spatially resolved, diffraction limited, ultrafast laser-based optical scanning microscope, which includes measurement capabilities of the magneto-optic Kerr effect (MOKE), a direct measure of broken time-reversal symmetry, and the optical second harmonic generation rotational anisotropy (SHG RA), a sensitive probe to broken spatial symmetries. | Session 53: Spin Textures at Magnetic Multilayers |
| 675 | Chirality-driven growth of stripe domains in Co/Ni/Pt-based multilayers | Brock, Jeffrey; Medapalli, Rajasekhar; Fullerton, Eric | Here we present an experimental study of [Co(0.7 nm)/Ni(0.5 nm)/Pt(0.7 nm)] N (1 ≤ N ≤ 5) multilayers designed to have asymmetric Pt/Co and Ni/Pt interfaces and perpendicular anisotropy. | Session 53: Spin Textures at Magnetic Multilayers |
| 676 | High tunability of synthetic antiferromagnets applied in magnetic field sensing and memory devices | Wang, Kang; Zhang, Yiou; Xiao, Gang | We investigated magnetic configurations in synthetic antiferromagnets (SAFs) of CoFeB/Ta/CoFeB by tuning interlayer exchange coupling (IEC, the energy density is denoted by J ex) and perpendicular magnetic anisotropy (PMA, K u). | Session 53: Spin Textures at Magnetic Multilayers |
| 677 | Dynamic Skyrmion-Mediated Switching of Perpendicular MTJs: Scaling to 20 nm with Thermal Noise | Rajib, Md Mahadi; Misba, Walid Al; Bhattacharya, Dhritiman; Atulasimha, Jayasimha | Here, we will investigate the extent to which the skyrmion mediated switching scheme can scale to lateral dimensions ~ 20 nm in ferromagnets. | Session 53: Spin Textures at Magnetic Multilayers |
| 678 | Skyrmion Breathing Modes in Synthetic Ferri- and Antiferromagnets | Lonsky, Martin; Hoffmann, Axel | Here, we present micromagnetic simulations of these excitations in synthetic ferri- and antiferromagnets. | Session 53: Spin Textures at Magnetic Multilayers |
| 679 | Voltage Control of magnetic Skyrmions in patterned nanodots | Bhattacharya, Dhritiman; Razavi, Seyed Armin; Wu, Hao; dai, bingqian; Wang, Kang-Lung; Atulasimha, Jayasimha | Here we propose to show this behavior in patterned nanodots of CoFeB sandwiched between an oxide and a heavy metal layer. | Session 53: Spin Textures at Magnetic Multilayers |
| 680 | A deeper understanding of the Dzyaloshinskii-Moriya interaction in magnetic multilayers | Nembach, Hans | We introduced a Cu dusting layer at the interface between CoFeB and Pt to disrupt the Heisenberg exchange directly at the interface. | Session 53: Spin Textures at Magnetic Multilayers |
| 681 | Decoherence of transverse spin currents in ferrimagnetic CoGd | Lim, Youngmin; Khodadadi, Behrouz; Li, Jie-Fang; Viehland, Dwight; Emori, Satoru | Here, we determine λ c in ferrimagnetic Co 1-xGd x alloys with much weaker spin-orbit coupling than CoTb. | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 682 | Thermal Hall effect, spin Nernst effect, and spin density induced by thermal gradient in collinear ferrimagnets from magnon-phonon interaction | Park, Sungjoon; Nagaosa, Naoto; Yang, Bohm-Jung | We study the thermal Hall and spin Nernst effect in collinear ferrimagnets on a honeycomb lattice with broken inversion symmetry between the nearest neighbors. | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 683 | Electric-Field Control of Strain-Driven Tuning of FMR in the Low-Loss Ferrimagnetic Coordination Compound V[TCNE]x | Kurfman, Seth; Franson, Andrew; Shah, Piyush; Srinivasan, Gopalan; Page, Michael; Johnston-Halperin, Ezekiel | To date, this work has exploited low-loss ferrite materials mechanically coupled to piezoelectric substrates. | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 684 | Non-local spin transport measurement in TbIG thin films grown by pulsed laser deposition | Yuan, Wei; Li, Junxue; Ortiz, Victor; Liu, Yawen; Shi, Jing | In this work, we use nonlocal method to probe spin transport in terbium iron garnet (Tb 3Fe 5O 12 or TbIG). | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 685 | Anomalous spin Hall angle of a metallic ferromagnet determined by a multiterminal spin injection/detection device | Wimmer, Tobias; Coester, Birte; Geprägs, Stephan; Gross, Rudolf; Goennenwein, Sebastian; Huebl, Hans; Althammer, Matthias | We report on the determination of the anomalous spin Hall angle in the ferromagnetic metal alloy cobalt-iron (Co 25Fe 75, CoFe). | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 686 | Investigation of nonequilibrium processes of magnetoelastic waves and evidence of their BEC formation in an antiferromagnetic system | Safonov, Vladimir; Bas, Derek; Rostovtsev, Yuri; Roberts, James; Berman, Diana; McConney, Michael; Page, Michael | The mode we suggest as the mexon BEC exhibits extremely high efficiency with a quality factor of Q ~ 8×10 5. | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 687 | Elimination of two-magnon scattering for evaluation of intrinsic spin decay length in antiferromagnetic insulator | Sakimura, Hiroto; Harumoto, Takashi; Nakamura, Yoshio; Shi, Ji; Ando, Kazuya | We present an experimental evaluation of the intrinsic spin decay length in an antiferromagnetic insulator (AFI). | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 688 | Nuclear spin Seebeck effect in antiferromagnets | Reitz, Derek; Tserkovnyak, Yaroslav | Nuclear spin Seebeck effect in antiferromagnets | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 689 | Topological Hall effect in canted antiferromagnets | Nakane, Jotaro; Nakazawa, Kazuki; Kohno, Hiroshi | Treating the two textures by a spin gauge field, we derive an analytical expression for the topological Hall conductivity (THC). | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 690 | Magnetization dynamics and spin transport in compensated ferrimagnets | Lee, Kyung-Jin | We will discuss the underlying mechanism of fast dynamics of compensated and uncompensated staggered spin moments, driven by magnetic fields or spin torques [1-3]. | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 691 | Thermal spin-Edelstein effect in an antiferromagnetic insulator/normal metal heterostructure | Zhang, Hantao; Cheng, Ran | Thermal spin-Edelstein effect in an antiferromagnetic insulator/normal metal heterostructure | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 692 | Strain-Tunable Magnetic Anisotropy in Sputtered Thulium Iron Garnet (TIG) Thin Films and TIG/Au/TIG Trilayers | Da Silva Vilela, Gilvania; CHI, HANG; Stephen, Gregory; Settens, Charles; Zhou, Preston; Ou, Yunbo; Suri, Dhavala; Heiman, Don; Moodera, Jagadeesh | We investigate ways to tune the magnetic anisotropy in TIG films by selecting their thickness, substrate, and annealing conditions. | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 693 | Quantum Dynamics of Matrix Product States on Transformed bases | Mohammadaghaei, Amir; Shtengel, Kirill | In this work, we explore a MPS time evolution but on a set of transformed bases that are local both in real and fourier space. | Session 54: Spin Transport and Magnetization Dynamics in Ferrimagnets and Antiferromagnets |
| 694 | Strongly coupled magnon hybrid systems with permalloy thin films1 | Li, Yi | In this talk, we will explore the use of permalloy (Ni 80Fe 20) thin films in hybrid magnon systems. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 695 | Strong Interlayer Magnon-Magnon Coupling in Magnetic Hybrid Nanostructures | Chen, Jilei; Liu, Chuanpu; Liu, Tao; Xiao, Yang; Xia, Ke; Bauer, Gerrit; Wu, Mingzhong; Yu, Haiming | Here, I will present our recent experimental results on strong interlayer magnon-magnon coupling in an on-chip nanomagnonic device at room temperature [1]. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 696 | Introducing Coherent Time Control to Cavity Magnon Polartion Modes | Wolz, Tim; Stehli, Alexander; Schneider, Andre; Boventer, Isabella; Macedo, Rair; Ustinov, Alexey; Klaeui, Mathias; Weides, Martin | In this work [4], we perform fast manipulations of the different CMP modes with independent but coherent pulses to the cavity and magnon system. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 697 | 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 Y 3Fe 5O 12 thin films over a 100-nanometer length scale. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 698 | Spin wave resonance study in a series of etched GaMnAsP films | Liu, Xinyu; Bac, Seul-Ki; Lee, Sanghoon; Dobrowolska, Malgorzata; Furdyna, Jacek; Puszkarski, Henryk; Tomczak, Piotr | In order to resolve this issue in a 108-nm GaMnAsP film, a series of etched samples formed by wet-etching this GaMnAsP film were studied by XRD, SQUID and FMR. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 699 | Strong angle dependence of auto-oscillating spin wave multi-modes in constricted Py/Pt bilayers | Lee, Inhee; Zhang, Chi; Singh, Simranjeet; McCullian, Brendan; Hammel, P Chris | We observe considerable changes in the size, number, and distribution of modes as the angle varies. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 700 | Influence of ferromagnetic films surface properties on spin wave modes | Arias, Rodrigo; Armijo, Ignacio | Thus, in order to relate 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 55: Spin Wave Excitation, Manipulation, and Detection |
| 701 | Quantitative Study of Spin Wave Chirality in Obliquely Magnetized Magnetic Films | Trevillian, Cody; Tyberkevych, Vasyl | Here, we propose a quantitative measure of SW chirality, C n = 1 – │〈Ρ〉 n│, where 〈Ρ〉 n is the expected value of the parity operator for the n th SW mode. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 702 | Probing phase transition and anisotropy in magnetic insulator based heterostructures employing magnon spin currents | Mallick, Kingshuk; Wagh, Aditya A; Ionescu, Adrian; Barnes, Crispin; Kumar, P.S. Anil | Many reports have explored the temperature dependence of Longitudinal Spin Seebeck Effect (LSSE) in insulating magnets. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 703 | Tuning entanglement by squeezing magnons in anisotropic magnets | Zou, Ji; Kim, Se Kwon; Tserkovnyak, Yaroslav | We theoretically study the entanglement between two arbitrary spins in a magnetic material, where magnons naturally form a general squeezed coherent state, in the presence of an applied magnetic field and axial anisotropies. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 704 | Electron-magnon scattering and magnon generated chiral charge and spin pumping from time-dependent-quantum-transport/classical-micromagnetics approach | Suresh, Abhin; Nikolic, Branislav | In this study, we employ recently developed [M. D. Petrovic et. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 705 | Investigation of the magnon dispersion in Lu2V2O7 and magnon Weyl point | Do, Seunghwan; Rau, Jeffrey; Suriya Arachchige, Hasitha; Rai, Binod K.; Sala, Gabriele; Fanelli, Victor R.; Stone, Matthew; Huang, Qing; Zhou, Haidong; Lumsden, Mark; Christianson, Andrew | We use inelastic neutron scattering to examine the spin wave excitations in the compound. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 706 | Spin Seebeck Effect in Helimagnetic Cu$_2$OSeO$_3$: Test of Bulk Magnon Spin Current Theory | Akopyan, Artem; Prasai, Narayan; Trump, Benjamin; Marcus, Guy; McQueen, Tyrel; Cohn, Joshua | Here we report temperature ($T$) and magnetic field-dependent measurements of magnon thermal conductivity ($\kappa_m$) and longitudinal spin Seebeck coefficient ($S_{LSSE}$) in 10-nm Pt/Cu$_2$OSeO$_3$ heterostructures for 1~K $\leq T\leq$~15~K. Measurements for three different specimens, having spin-mixing conductances that vary by more than an order of magnitude, demonstrate a relationship between $\kappa_m$ and $S_{LSSE}$ in good agreement with bulk magnon spin current theory. | Session 55: Spin Wave Excitation, Manipulation, and Detection |
| 707 | Spin pumping under magnetic field gradient | Arisawa, Hiroki; Daimon, Shunsuke; Oikawa, Yasuyuki; Kikkawa, Takashi; Saitoh, Eiji | In this talk, we report spatially nonuniform spin current generation by the spin pumping effect under a magnetic field gradient in a Pt/Y 3Fe 5O 12 bilayer system. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 708 | Drag induced giant anomalous Nernst effect in Ferromagnetic MnBi | He, Bin; Sahin, Cuneyt; Boona, Stephen; Sales, Brian; Heremans, Joseph P; Flatté, Michael; Felser, Claudia | In this talk, we present the observation of giant anomalous Nernst effect in MnBi single crystals. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 709 | Electrically-induced ferromagnetism in diamagnetic FeS2 | Walter, Jeff; Voigt, Bryan; Day-Roberts, Ezra; Heltemes, Kei; Birol, Turan; Fernandes, Rafael; Leighton, Chris | In this work we use ionic liquid gating, which can induce electron densities >10 14 cm -2, to achieve voltage-induced ferromagnetism in diamagnetic ( i.e., zero-spin) FeS 2 single crystals. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 710 | Spin to charge and charge to spin conversion in a Dirac semimetal | Yanez, Wilson; Xiao, Run; Held, Jacob; Xiao, Di; Rable, Jeffrey; González, Enrique; Ou, Yongxi; Richardella, Anthony; Mkhoyan, K.; Samarth, Nitin | We report evidence of spin to charge and charge to spin conversion at room temperature in thin films of the archetypal three-dimensional Dirac semimetal Cd 3As 2 grown by molecular beam epitaxy. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 711 | Spin Seebeck effect in Pt/SrMnO3 heterostructures | Vallabhaneni, Eswara phanindra; Das, Arijit; Banerjee, Tamalika | Here, we have performed systematic investigations of SSE employing two measurement geometries, local and non-local configurations, on oxygen (non-)stoichiometric-SrMnO 3 thin films, which exhibit weak-ferromagnetic, insulating behavior down to low temperatures. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 712 | Longitudinal Spin Seebeck effect in Pyrochlore Iridates with Bulk and Interfacial Dzyaloshinskii-Moriya interaction | Ma, Bowen; Flebus, Benedetta; Fiete, Gregory | Here, we present a general theory of the SSE in the case of an antisymmetric Dzyaloshinskii-Moriya interaction (DMI) at the interface, in addition to the usual Heisenberg form. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 713 | Spin Seebeck effect in Vanadium Tetracyanoethylene | Zheng, Yuanhua; Kurfman, Seth; Franson, Andrew; Johnston-Halperin, Ezekiel; Heremans, Joseph P | Here, we present a systematic study on the temperature and thickness dependence of SSE in V(TCNE) x. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 714 | Temperature Dependence of the Anomalous Nernst Coefficient for Ni80Fe20 Determined with Metallic Nonlocal Spin Valves | Bennet, Rachel; Hojem, Alex; Zink, Barry | [3,4] Here, we use nonlocal spin valves suspended on thin silicon nitride membranes to determine the temperature dependence of the anomalous Nernst coefficient of 35 nm thick permalloy (the NiFe alloy with 80% Ni) from 78 K to 300 K. [1] Chuang, et al. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 715 | Magneto-thermoelectric effect in lanthanum orthoferrite with Pt overlayer | Lin, Weiwei; He, Jiaming; Zhou, Jianshi; Ma, Bowen; Fiete, Gregory; Chien, Chia-Ling | We have observed nontrivial magneto-thermoelectric effects in lanthanum orthoferrite (LaFeO 3) perovskite single crystals with Pt overlayer at room temperature. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 716 | Effects of CoFeAl Alloy Composition on Magnetization Dynamics and Magnetic Thermal Transport | Mohan, Ramya; Sun, Yiwei; Mathaudhu, Suveen; Coh, Sinisa; Wilson, Richard | To explore the magnetization dynamics, I use a time-resolved MOKE set-up to observe ultrafast demagnetization in a few hundred femtoseconds followed by precessional dynamics. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 717 | Investigation of thermal Hall conductivity in hexagonal LuFeO3 type multiferroics | Das, Hena; Nikolaev, Sergey | In this study, we have investigated topology of the magnonic bands and the magnon-mediated thermal transport of the LuFeO 3 type novel multiferroics, in which the geometric origin of the ferroelectricity induced not only a net magnetization but also non-trivial magnetoelectric couplings [Nature Communications 5, 2998 (2014), Nature Materials 13, 163-167 (2014)]. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 718 | Phase transitions and magnetocaloric effects in the Heusler compounds Ni2Mn0.70Cu0.30Ga and Ni2Mn0.70Cu0.25 Cr0.05Ga | Agbo, Sunday; Khan, Mahmud | Phase transitions and magnetocaloric effects in the Heusler compounds Ni2Mn0.70Cu0.30Ga and Ni2Mn0.70Cu0.25 Cr0.05Ga | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 719 | Theory of spin magnetic quadrupole moment and temperature-gradient-induced magnetization | Shitade, Atsuo; Daido, Akito; Yanase, Youichi | We formulate what we call gravitomagnetoelectric (gravito-ME) effect, in which the magnetization is induced by a temperature gradient. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 720 | Oscillatory spin pumping in Nb/NiFe/Nb junctions | Yao, Yunyan; Cai, Ranran; Tsutsumi, Yasumasa; Ma, Yang; Xing, Wenyu; ji, yuan; Xie, Xincheng; Yang, See-Hun; Maekawa, Sadamichi; Han, Wei | In this talk, I will discuss the oscillatory spin pumping in the Nb(100nm)/NiFe/Nb(100nm) trilayer structure. | Session 56: Spin, Charge, Thermal Interactions, and Conversion |
| 721 | Partitioning the spin-orbit torque in heavy metal/ferromagnet heterostructures | Xue, Fei; Haney, Paul | In order to optimize the spin-orbit torque efficiency, we provide a general scheme to identify the contributions to the intrinsic spin-orbit torque due to the wave-function change induced by an external electric field in the steady state. | Session 57: Spin-Orbit Torques |
| 722 | Bulk versus Interface Contributions to the Spin-Orbit Torque in Ferromagnetic Heterostructures | Mahfouzi, Farzad; Kioussis, Nicholas | We present an ab initio-based theoretical framework which elucidates the origin of the bulk versus interface contributions to the spin-orbit torque (SOT) in Heavy-Metal(HM)/Ferromagnet(FM) heterostructures. | Session 57: Spin-Orbit Torques |
| 723 | Spin-orbit torque generated by amorphous FexSi1-x | Hsu, Cheng-Hsiang; Karel, Julie; Roschewsky, Niklas; Bouma, Dinah Simone; Bennett, Scott; Nguyen, Alexander; Cheema, Suraj; Sayed, Shehrin; Hellman, Frances; Salahuddin, Sayeef | Here we report observation of spin-orbit torque under room temperature in fully amorphous non-magnetic Fe(x)Si(1-x)/cobalt bilayer via spin-torque ferromagnetic resonance and harmonic Hall measurements. | Session 57: Spin-Orbit Torques |
| 724 | Transverse and parallel spin-torque ferromagnetic resonance for improved measurements of spin-orbit torques | Karimeddiny, Saba; Mittelstaedt, Joseph; Buhrman, Robert; Ralph, Daniel | We present a method to quantify the contribution of the spin-pumping/inverse-spin-Hall-effect (SP-ISHE) voltage to spin-torque ferromagnetic resonance (ST-FMR) measurements of spin-orbit torques. | Session 57: Spin-Orbit Torques |
| 725 | Interfacial contributions to spin-orbit torque and magnetoresistance in ferromagnet/heavy-metal bilayers | Belashchenko, Kirill; Kovalev, Alexey; van Schilfgaarde, Mark | Interfacial contributions to spin-orbit torque and magnetoresistance in ferromagnet/heavy-metal bilayers | Session 57: Spin-Orbit Torques |
| 726 | Field-free spin-orbit torque switching of Cr-induced perpendicular magnetization | Chuang, Tsao-Chi; Pai, Chi-Feng; Huang, Ssu Yen | In this work, we show that the 3d Cr, without any heavy metals and the MgO layer, can induce strong interfacial PMA and deliver deterministic SOT switching. | Session 57: Spin-Orbit Torques |
| 727 | Anomalous spin-orbit torques in a ferromagnetic metal | Wang, Wenrui; Wang, Tao; Amin, Vivek; Wang, Yang; Radhakrishnan, Anil; Davidson, Angie; Allen, Shane; Silva, Thomas; Ohldag, Hendrik; Balzar, Davor; Zink, Barry; Haney, Paul; Xiao, John; Cahill, David; Lorenz, Virginia; Fan, Xin | Most research has focused on the spin-orbit torque generated externally by the nonmagnetic material, overlooking the possibility that the ferromagnetic metal can generate spin-orbit torque on itself. | Session 57: Spin-Orbit Torques |
| 728 | Spin-orbit driven spin depolarization in the ferromagnetic Weyl semimetal Co3Sn2S2 | Howlader, Sandeep; Saha, Surabhi; Kumar, Ritesh; Nagpal, Vipin; Patnaik, Satyabrata; Das, Tanmoy; Sheet, Goutam | In fact, we have observed a 50% spin polarization at the Fermi level. | Session 57: Spin-Orbit Torques |
| 729 | Spin Orbit Torque in Graphene/Co Heterosystem | Song, Kenan; Manchon, Aurelien; Schwingenschlogl, Udo | With density functional theory, we show that Co atoms at the interface exhibit spin-momentum locking, which is in line with the exprtiments. | Session 57: Spin-Orbit Torques |
| 730 | Time-evolution of spin-orbit torque and magnetization in Rashba ferromagnet from multiscale time-dependent-quantum-transport/classical-micromagnetics formalism | BAJPAI, UTKARSH; Nikolic, Branislav | In this work, we investigate the time-evolution of spin-orbit torque in a Rashba ferromagnet using a recently developed quantum-classical hybrid framework where quantum electrons described by time-dependent nonequilibrium Green functions (TDNEGF) are self consistently coupled to local magnetization dynamics described by classical-micromagnetics using the Landau-Lifshitz-Gilbert (LLG) equation. | Session 57: Spin-Orbit Torques |
| 731 | Theoretical study of spin torque and domain wall motion on ferromagnetic Kagome lattice | Kim, Sehoon; Nomura, Kentaro | We theoretically study spin torque and domain wall motion induced electrically in a ferromagnetic Kagome lattice, which has spin-orbit coupling. | Session 57: Spin-Orbit Torques |
| 732 | Current-induced unidirectional magnetoresistance in FeRh/Pt bilayers | Shim, Julie; Saglam, Hilal; Kang, Kisung; Oh, Junseok; Li, Yi; Zhang, Wei; Gilbert, Matthew; Schleife, Andre; Hoffmann, Axel; Sklenar, Joseph; Mason, Nadya | Here we present transport results on magnetron sputtered AFM FeRh/Pt films, fabricated into nanowire geometries. | Session 57: Spin-Orbit Torques |
| 733 | Band structure probe 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, Y. H.; Yang, Zhuo; Kohama, Yoshimitsu | In this talk, we present a combined experimental and theoretical approach to study the band structure of these QWs. | Session 58: Spins in Non-magnetic Semiconductors |
| 734 | Weak-antilocalization Induced by Spin-orbit Interaction in Two-dimensional Tellurium | Niu, Chang; Zhang, Zhuocheng; Qiu, Gang; Wang, Yixiu; Wu, Wenzhuo; Ye, Peide (Peter) | Here we report experimental results regarding weak-antilocalization (WAL) effect in n-type two-dimensional (2D) Te films at cryogenic temperatures. | Session 58: Spins in Non-magnetic Semiconductors |
| 735 | Magneto-optical properties of n-type InAsP films in ultrahigh magnetic fields | Thapa, Sunil; Stanton, Christopher; Magill, Brenden; Herath Mudiyanselage, Rathsara; Khodaparast, Giti; Matsuda, Y. H.; Yang, Zhuo; Kohama, Yoshimitsu; Choi, Sukgeun; Palmstrom, Chris | We present a theoretical/experimental study of the magneto-optical properties of n-type InAs xP 1−x films (x=0.07,0.34) in ultrahigh magnetic fields in the Faraday’s geometry at T=300 K using k.p method with modified 8-band Pidgeon-Brown model. | Session 58: Spins in Non-magnetic Semiconductors |
| 736 | Ultralong spin coherence in MAPbI3 single crystals revealed by ultrafast optics | Yao, Yue; Sheffield, Matthew; Hewa Walpitage, Heshan; Brown Heft, Isaac; Liu, Ye; Ni, Zhenyi; Huang, Jinsong; Li, Yan | Here, in order to exclude the influence of the polycrystalline structure and obtain intrinsic spin dynamics, we investigate spin dynamics on high quality MAPbI 3 single crystals by time-resolved Faraday rotation (TRFR). | Session 58: Spins in Non-magnetic Semiconductors |
| 737 | Probing the cubic crystal anisotropy and spin-orbit interaction in GaAs heterostructures using hole quantum point contacts | Hudson, Karina; Srinivasan, Ashwin; Miserev, Dmitry; WANG, Qingwen; Klochan, Oleh; Farrer, Ian; Ritchie, David; Hamilton, Alex | We find the anisotropy of the g-factor is strongly dependent on QPC orientation, and present a theoretical framework describing the SOI terms arising from cubic crystal anisotropy. | Session 58: Spins in Non-magnetic Semiconductors |
| 738 | Origin of Rashba-Dresselhaus effect in a Pb-free ferroelectric nitride perovskite. | Bandyopadhyay, Subhadeep; Dasgupta, Indra | A systematic study of orthorhombic and rhombohedral phases of this system reveal the importance of symmetry in realizing the nature of the splitting of bands around the time reversal invariant k-points. | Session 58: Spins in Non-magnetic Semiconductors |
| 739 | Efficient spin to charge conversion at strained amorphous-Si thin film interfaces | Bhardwaj, Ravindra; Katailiha, Anand; Lou, Paul; Kumar, Sandeep | This study gives a new direction of research for spin-caloritronics applications using strain engineering and amorphous materials. | Session 58: Spins in Non-magnetic Semiconductors |
| 740 | Dephasing in quasi-1D wires: Non-Markovian noise and correlations due to itinerant spin interactions | Foster, Matthew; Davis, Seth | Motivated by the interest in many-body localization, we revisit the problem of dephasing due to electron-electron scattering in quasi-1D (many channel) wires. | Session 58: Spins in Non-magnetic Semiconductors |
| 741 | Radial spin texture in elemental tellurium with chiral crystal structure | Sakano, Masato; Hirayama, Motoaki; Takahashi, Takanari; Akebi, Shuntaro; Nakayama, Mitsuhiro; Kuroda, Kenta; Taguchi, Kazuaki; Yoshikawa, Tomoki; Miyamoto, Koji; Okuda, Taichi; Ono, Kanta; Kumigashira, Hiroshi; Ideue, Toshiya; Iwasa, Yoshihiro; Natsuki, Mitsuishi; Ishizaka, Kyoko; Shin, Shik; Miyake, Takashi; Murakami, Shuichi; Sasagawa, Takao; Kondo, Takeshi | To reveal the spin textures of chiral crystals, here we investigate the spin and electronic structure in p-type semiconductor elemental tellurium by using spin- and angle-resolved photoemission spectroscopy. | Session 58: Spins in Non-magnetic Semiconductors |
| 742 | Prediction of momentum dependent spin splitting in antiferromagnetic compounds without spin-orbit coupling | Yuan, Linding; Wang, Zhi; Luo, Jun-Wei; Zunger, Alex | We identify the magnetic symmetry conditions that produce AFM prototypes having spin splitting even at TRIM points without external magnetic field and even when SOC is set to zero. | Session 58: Spins in Non-magnetic Semiconductors |
| 743 | Response of Bloch Electrons to Electric Fields | Kerr, William | We find for this model that the anomalous velocity is dominated by the term coming from the spin operator rather than the position operator. | Session 58: Spins in Non-magnetic Semiconductors |
| 744 | Birefringent Spin-Lasers | Cao, David Jiayu; 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. | Session 58: Spins in Non-magnetic Semiconductors |
| 745 | Modeling of the Mn-Carrier Exchange Interaction in Colloidal CdSe/CdMnS Nanoplatelets with a Multilayer Core and Magnetically Doped Shell | Pientka, James; Najafi, Arman; Tarasek, Steven; Delikanli, Savas; Zhang, Peiyao; Norden, Tenzin; Shendre, Sushant; Sharma, Manoj; Bhattacharya, Arinjoy; Taghipour, Nima; Demir, Hilmi; Petrou, Athos; Thomay, Tim | Here, we present a model that includes the carrier mediated exchange interaction and study its effect on the excitonic wavefunction. | Session 58: Spins in Non-magnetic Semiconductors |
| 746 | Correlated States and Frustration in Magnetic Quantum Dots with Multiple Occupancy | Campos, Tiago; Pientka, James; Matos Abiague, Alex; Han, Jong E; Zutic, Igor | Using exact diagonalization and conditional probability density we reveal peculiar manifestations of strongly-correlated states in Mn-doped QDs. | Session 58: Spins in Non-magnetic Semiconductors |
| 747 | Theory of Excitonic Phases in an Electron-Hole Double-Layer System with Relativistic Spin-Orbit Interaction | Zhang, Yeyang; Chen, Ke; Shindou, Ryuichi | We propose helicoidal and helical excitonic insulator phases in a Coulomb-coupled two-dimensional electron-hole double layer (EHDL) system with relativistic spin-orbit interaction. | Session 58: Spins in Non-magnetic Semiconductors |
| 748 | Vacancies in artificial spin ice | Díaz, Pablo; Brevis, Felipe; Vogel, Eugenio | We study artificial spin-ice systems (in the form of square arrays of islands of magnetic materials) from the numerical point of view. | Session 59: Structured Materials |
| 749 | 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 Ni 80Fe 20(Py) underlayer to increase interactions. | Session 59: Structured Materials |
| 750 | Competition between topological order and long range order in Santa Fe spin ice | Duzgun, Ayhan; Nisoli, Cristiano | We have investigated numerically Santa Fe Ice in and out of equilibrium. | Session 59: Structured Materials |
| 751 | Shape transformations of flexible ferromagnetic ribbons | Yershov, Kostiantyn; Kravchuk, Volodymyr; Sheka, Denis D.; Van den Brink, Jeroen; Gaididei, Yuri | We propose a minimal extension of the anisotropic 2D Heisenberg model in order to describe flexible magnetic systems with coupled magnetic and mechanical subsystems[1,2]. | Session 59: Structured Materials |
| 752 | A New Approach of Constructing Shape-controlled Nanowire Arrays | Chen, Fei; Peng, Ruwen; Wang, Mu | Here we demonstrate a unique way to fabricate cobalt nanowire arrays on an arbitrarily-shaped surface by electrodeposition. | Session 59: Structured Materials |
| 753 | S-shaped configurational magnetic states in square permalloy dots | Costanzi, Barry; Cho, Anthony; Weeden, Spencer; Dairaghi, Gregor | We experimentally observe both U- and S-shaped zero-field magnetic configurations in single square permalloy dots, with a dot’s configurational state dependent on field history and temperature. | Session 59: Structured Materials |
| 754 | Functional ferrogels: from magnetic biosensors to regenerative medicine | Kurlyandskaya, Galina; Safronov, A.; Blyakhman, F.; Shcherbinin, S.; Buznikov, N. | We propose to substitute biological samples and use synthetic ferrogel to mimic main properties of the living systems at the stage of the development of magnetic biosensor prototypes. | Session 59: Structured Materials |
| 755 | Tunability of magnetism in Heusler Mn3Ga: Crossover between cubic and tetragonal phase upon Co-substitution | Nguyen, Thi Quynh Anh; Ho, Huynh Thi; Hong, Soon Cheol; Rhim, Sonny H. | Tunability of magnetism in Heusler Mn3Ga: Crossover between cubic and tetragonal phase upon Co-substitution | Session 59: Structured Materials |
| 756 | Deconvoluting Magnetic contributions in BiFeO3 NPs using First Order Reversal Curves | Cardona Rodríguez, Alexander; RAMOS, Edwin; Vergara, Nicolás; Carranza, Diego; Reiber, Andreas; Ramirez, Juan | Here we present first-order reversal curves (FORC) as a reliable method to deconvolute the BFO magnetic contributions that appear when nanostructured in the form of nanoparticles with sizes below and above the wavelength spin spiral . | Session 59: Structured Materials |
| 757 | Multiscale modeling of magnetorheological elastomers with a twist | Marchfield, David; Dang, Tong; Clark, Andy; Li, Jiajia; Cheng, Xuemei; Buchanan, Kristen | In this work, we used a multi-scale approach to model the magnetic reversal and field-dependent deformations. | Session 59: Structured Materials |
| 758 | Ferromagnetic Liquid Droplets | Liu, Xubo | We have found a route to reversibly transform these paramagnetic droplets into ferromagnetic droplets by the formation, assembly and jamming of a magnetic nanoparticle-surfactants at the interface of the droplet with a surrounding immiscible fluid that encapsulates the magnetic nanoparticle dispersion. | Session 59: Structured Materials |
| 759 | 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 60: Topological Spintronics using Chiral Antiferromagnets |
| 760 | Large magneto-optical Kerr effect in the non-collinear antiferromagnetic metal Mn3Sn | Higo, Tomoya; Man, Huiyuan; Gopman, Daniel; Wu, Liang; Koretsume, 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 | We found that despite a vanishingly small magnetization (~2 mμ B/Mn), Mn 3Sn exhibits a large zero-field MOKE (~20 mdeg), comparable to that in ferromagnetic metals. | Session 60: Topological Spintronics using Chiral Antiferromagnets |
| 761 | Magnetic Spin Hall Effect of a Topological Chiral Antiferromagnet Mn3Sn | Otani, Yoshichika | Magnetic Spin Hall Effect of a Topological Chiral Antiferromagnet Mn3Sn | Session 60: Topological Spintronics using Chiral Antiferromagnets |
| 762 | Anti-chiral order and damped spin waves in the topological semi-metal Mn3Ge | Gaudet, Jonathan; Chen, Youzhe; Dasgupta, Sayak; Marcus, Guy; Lin, Jiao; Zhao, Yang; Chen, Wangchun; Stone, Matthew; Ikhlas, Muhammad; Chen, Taishi; Tomita, Takahiro; Tchernyshyov, Oleg; Nakatsuji, Satoru; Broholm, Collin | The coupling of its electronic transports with magnetic order presents important technological opportunities for which, I will describe our experimental efforts to understand the magnetism of Mn 3Ge through neutron scattering techniques. | Session 60: Topological Spintronics using Chiral Antiferromagnets |
| 763 | New aspects of magnetoelectric responses in chiral antiferromagnets | Chen, Hua; Wang, Tzu-Cheng; Guo, Guang-Yu; Xiao, Di; Niu, Qian; MacDonald, Allan | In this talk I will discuss a number of recent theoretical and experimental developments that counter this conventional wisdom, in a class of antiferromagnets that have stable noncollinear magnetic order. | Session 60: Topological Spintronics using Chiral Antiferromagnets |
| 764 | Evidence of Topological Hall Effect in Pt/Antiferromagnetic-Insulator Bilayers | Cheng, Yang; Yu, Sisheng; Zhu, Menglin; Hwang, Jinwoo; Yang, Fengyuan | We observe unambiguous the evidence of topological Hall effect in Pt/Cr 2O 3 bilayers grown on Al 2O 3(0001) and Al 2O 3(11-20), where Cr 2O 3 epitaxial film is an antiferromagnetic insulator. | Session 61: Transport Phenomena of Spin Textures |
| 765 | Control of ferromagnetic Curie temperature and topological Hall effect in chromium telluride thin films | Lee, In Hak; Choi, Byoung Ki; Kim, Hyuk Jin; Kim, Min Jae; Lee, Kyeong Jun; Choi, Tae Yang; Chang, Seo Hyoung; Jeong, Hu Young; Kim, Younghak; Lee, Suyoun; Chang, Young Jun | Here, we investigate two different types of Cr 1-δTe thin films with different T c via different growth conditions to understand the origin of the various T c. | Session 61: Transport Phenomena of Spin Textures |
| 766 | Large topological Hall effect in a non-coplanar ferromagnet Cr0.9TeB0.1 | He, Yangkun; Fecher, Gerhard; Kroder, Johannes; Fu, Chenguang; Pan, Yu; Schnelle, Walter; Borrmann, Horst; Felser, Claudia | Here, we report a sign change in AHE and the origin of THE in Cr 0.9TeB 0.1 single crystal, due to a non-coplanar canted magnetic structure and the momentum space Berry curvature. | Session 61: Transport Phenomena of Spin Textures |
| 767 | Topological Hall effect in Shastry-Sutherland lattice | Shahzad, Munir; Swain, Nyayabanta; Sengupta, Pinaki | We study the classical Heisenberg model on the geometrically frustrated Shastry-Sutherland lattice with additional Dzyaloshinskii-Moriya (DM) interaction. | Session 61: Transport Phenomena of Spin Textures |
| 768 | Recent Developments in Spin Superfluid Transport | Hill, Daniel; Tserkovnyak, Yaroslav | We discuss how some of these problems are actually features which lead to a rich and potentially useful non-equilibrium phase diagram. | Session 61: Transport Phenomena of Spin Textures |
| 769 | Magnetic and electrical transport properties of MnBi2Te4 | Gong, Dongliang; Jin, Rongying | Detailed data analysis and implication will be presented. | Session 61: Transport Phenomena of Spin Textures |
| 770 | Magnetization and transport measurement of Cr11Ge19 single crystal | Li, Yu; Young, David; Ditusa, John | Magnetization and transport measurement of Cr11Ge19 single crystal | Session 61: Transport Phenomena of Spin Textures |
| 771 | Giant anomalous Hall effect related to scalar spin chirality induced by spin-cluster scattering | Ishizuka, Hiroaki; Nagaosa, Naoto | In this work, we discuss that the skew scattering by spin clusters shows a large skew angle in the order of 10 deg when the coupling between the electrons and the localized moments is strong. | Session 61: Transport Phenomena of Spin Textures |
| 772 | Giant anomalous Hall effect from spin-chirality scattering in a chiral magnet | Fujishiro, Yukako; Kanazawa, Naoya; Kurihara, Ryosuke; Tsukazaki, Atsushi; Ichikawa, Masakazu; Kawasaki, Masashi; Tokunaga, Masashi; Tokura, Yoshinori | We report the observation of giant anomalous Hall effect (AHE) in MnGe thin films. | Session 61: Transport Phenomena of Spin Textures |
| 773 | 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 61: Transport Phenomena of Spin Textures |
| 774 | Anomalous Hall Effect sensor based on CoFeB with ultrahigh magnetic field detectability | Zhang, Yiou; Wang, Kang; Xiao, Gang | In this work, we have demonstrated that sensitivity of AHE sensor based on Ta/CoFeB/MgO/Ta multi-layer structure can be greatly enhanced, through engineering of magnetic anisotropy. | Session 61: Transport Phenomena of Spin Textures |
| 775 | Atomic antiferromagnetic domain wall propagation beyond the relativistic limit | Yang, Huanhuan; Yuan, Huaiyang; Yan, Ming; Zhang, H. W.; Yan, Peng | We theoretically investigate the dynamics of atomic domain walls (DWs) in antiferromagnets driven by a spin-orbit field. | Session 61: Transport Phenomena of Spin Textures |
| 776 | Transport signature of the BKT transition in 2D easy-plane magnets | Chung, Suk Bum; Kim, Se Kwon | In this Letter, we show here that this non-conservation of spin in the 2D easy-plane magnets leads to a distinct spin transport signature at the BKT transition, the crossover between the infinitely long-range spin transport and the exponentially decaying spin transport. | Session 61: Transport Phenomena of Spin Textures |
| 777 | Frequency Dependence of Magnetic and Magnetoelastic Properties of Magnetostrictive Materials for Multiferroic Antennae | Finkel, Peter; Jones, Nicholas; Staruch, Margo | In this work we fully characterize magnetostrictive materials Fe 81.6Ga 18.4 and Terfenol-D at high frequencies up to several kHz and studied the effect of eddy current losses that potentially curtail the magnetic response of the material. | Session 61: Transport Phenomena of Spin Textures |
| 778 | Quantum effect in the antiferromagnetic layered-perovskite materials with the triangular-lattice | Ma, Jie | Through the experimental and theoretical studies, we found that the Linear Spin-Wave + 1/S treatment was inadequate to explain our experimental observation and the interlayer interaction could not be ignored in the system [3, 4]. | Session 62: Triangular Lattice |
| 779 | Effect of quenched disorder on an equilateral triangular lattice antiferromagnet Ba3CoSb2O9 | Huang, Qing; Zhou, Haidong; Hong, Tao; Choi, Eun; Ma, Jie; Li, Lu; Mauws, Cole; Wiebe, Christopher | We present a systematic study on effect of quenched disorder on magnetic properties in the Sr doped single-crystalline sample of Ba 2.8Sr 0.2CoSb 2O 9 by means of DC and AC susceptibilities, specific heat and advanced neutron scattering. | Session 62: Triangular Lattice |
| 780 | Universal scaling of the heat capacity in a quantum spin liquid state of 1T-TaS2 | Murayama, Hinako; Sato, Yuki; Taniguchi, Tomoya; Kurihara, Ryo; Suzuki, Hiroki; Xing, Xianzhuo; Huang, Wenkai; Kasahara, Shigeru; Kasahara, Yuichi; Kimchi, Itamar; Yoshida, Masaro; Iwasa, Yoshihiro; Konczykowski, Marcin; Matsuda, Yuji | Here, we have investigated the low energy excitations on pure, Se-substituted and electron-irradiated 1T-TaS 2, a QSL candidate material with spin-1/2 on a triangular lattice[1, 2], by measuring low-temperature thermal conductivity and heat capacity. | Session 62: Triangular Lattice |
| 781 | Magnetic Excitations and Q-dependent magnon lifetime in Non-collinear Metallic Antiferromagnet CrB2 | Park, Pyeongjae; Park, Kisoo; Kim, Taehun; Kousaka, Yusuke; Akimitsu, Jun; Perring, Toby; Kenzelmann, Michel; Park, Je-Guen | By excluding the effects of instrumental resolution, we mapped the intrinsic magnon linewidth Γ(q, E) which shows some unusual behavior. | Session 62: Triangular Lattice |
| 782 | Terahertz study of the frustrated triangular Ising magnet FeI2 | Legros, Anaelle; Chaudhuri, Dipanjan; Bai, Xiaojian; Dun, Zhiling; Mourigal, Martin; Armitage, Peter | We present the results from in-field time-domain terahertz spectroscopy on FeI 2. | Session 62: Triangular Lattice |
| 783 | Synthesis and frustrated magnetism of the triangular lattice ARESe2 single crystals | Xing, Jie; Sanjeewa, Liurukara; Kim, Jungsoo; Stewart, Gregory; Du, Maohua; Reboredo, Fernando; Custelcean, Radu; Sefat, Athena | We have characterized them through magnetization and heat capacity down to 0.4 K. Antiferromagnetic interactions with large magnetic anisotropy is observed, while no long-range order is found indicating frustrated magnetism. | Session 62: Triangular Lattice |
| 784 | Measurement of a 1/2 magnetization plateau in a frustrated antiferromagnet | Haley, Shannon; Maksimovic, Nikola; Maniv, Eran; Parker, Daniel; Singleton, John; Moore, Joel; Analytis, James | This talk will discuss our recent discovery of a ½ magnetization plateau in a frustrated antiferromagnet on a triangular lattice using fields up to 65T. | Session 62: Triangular Lattice |
| 785 | Novel Excitations near Quantum Criticality in Geometrically Frustrated Antiferromagnet CsFeCl3 | Masuda, Takatsugu; Hayashida, Shohei; Matsumoto, Masashige; Hagihala, Masato; Kurita, Nobuyuki; Tanaka, Hidekazu; Itoh, Shinichi; Hong, Tao; Soda, Minoru; Uwatoko, Yoshiya | We present neutron scattering under pressure in a triangular-lattice antiferromagnet that has a quantum disorder in the low-pressure phase and a noncollinear structure in the high-pressure phase [1]. | Session 62: Triangular Lattice |
| 786 | Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs2CuCl4 | Schulze, Erik; Arsenijevic, Stevan; Opherden, Lars; Ponomaryov, Alexey; Wosnitza, Joachim; Ono, Toshio; Tanaka, Hidekazu; Zvyagin, Sergei | We report on low-temperature heat-transport properties of the spin-1/2 triangular-lattice antiferromagnet Cs 2CuCl 4. | Session 62: Triangular Lattice |
| 787 | Torque equilibrium spin wave theory study of anisotropy and Dzyaloshinskii-Moriya interaction effects on the indirect K− edge RIXS spectrum of a triangular lattice antiferromagnet | Datta, Trinanjan; Jin, Shangjian; Cheng, Luo; Yao, Dao-Xin | We apply the recently formulated torque equilibrium spin wave theory (TESWT) to compute the 1/ S-order interacting K -edge bimagnon resonant inelastic x-ray scattering (RIXS) spectra of an anisotropic triangular lattice antiferromagnet with Dzyaloshinskii-Moriya (DM) interaction [1]. | Session 62: Triangular Lattice |
| 788 | A New Yb-based Spin-1/2 Triangular Lattice Magnet | Guo, Shu; Cava, Robert | Here, we present a cubic stacking Yb-based TL magnet. | Session 62: Triangular Lattice |
| 789 | Characterizing the Spin-½ Heisenberg model on the triangular lattice through the Dynamical Spin Structure | Tang, Ta; Devereaux, Thomas; Moritz, Brian; Jiang, Yi-Fan | 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 J 2. | Session 62: Triangular Lattice |
| 790 | Generalized SU(3) Spin Wave Theory on Effective S=1 Triangular Lattice Magnet FeI2 | Zhang, Hao; Zhang, Shang-Shun; Bai, Xiaojian; Dun, Zhiling; Stone, Matthew; Kolesnikov, Alexander; Ye, Feng; Mourigal, Martin; Batista, Cristian | Generalized SU(3) Spin Wave Theory on Effective S=1 Triangular Lattice Magnet FeI2 | Session 62: Triangular Lattice |
| 791 | Magnetic Excitations of the Frustrated Triangular Ising Magnet FeI2 | Bai, Xiaojian; Zhang, Shang-Shun; Dun, Zhiling; Zhang, Hao; Phelan, William; Zhou, Haidong; Stone, Matthew; Kolesnikov, Alexander; Ye, Feng; Batista, Cristian; Mourigal, Martin | We present a detailed investigation of the spin dynamics in single-crystals of the layered spin-one triangular-lattice compound FeI2. | Session 62: Triangular Lattice |
| 792 | Anisotropic-exchange magnets: triangular lattice and all | 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 62: Triangular Lattice |
| 793 | Interplay between magnetic structures, domain physics, and transport properties in a family of triangular layered materials | Liu, Chunxiao; Balents, Leon | We analyze the possible magnetic orders of the most general symmetry allowed spin Hamiltonian at nearest neighbor level. | Session 62: Triangular Lattice |
| 794 | Triangular antiferromagnet NiGa2S4: a low-dimensional analog of the pyrochlores? | Wang, Haoyu; Tchernyshyov, Oleg | We propose a different scenario based on a simple observation: the 4-sublattice structure resulting from a strong J3 makes the system similar to a pyrochlore antiferromagnet. | Session 62: Triangular Lattice |
| 795 | Complex magnetic behavior of the Co2+ triangular (saw-tooth) 1D chains in CsCo2(MoO4)2(OH) | Sanjeewa, Duminda; Garlea, Vasile; Xing, Jie; Sefat, Athena | We synthesize CsCo 2(MoO 4) 2(OH) single crystals, find the crystal structure, and characterize thermodynamic properties. | Session 62: Triangular Lattice |
| 796 | Synthesis and Characterization of Rare-Earth Based Triangular Antiferromagnet Borates | Ennis, Matthew; Bag, Rabindranath; Dissanayake, Sachith; Shi, Zhenzhong; Kolesnikov, Alexander; Rodriguez-Rivera, Jose; Wu, Hui; Brown, Craig; Graf, David; Haravifard, Sara | In this talk, we will present the results of our experimental efforts. | Session 62: Triangular Lattice |
| 797 | Magnetic short-range correlations and Kosterlitz-Thouless transitions in TmMgGaO4 | Daum, Marcus; Dun, Zhiling; Zhou, Haidong; Mourigal, Martin | Using AC susceptibility and neutron scattering measurements, we unveil this transition and discuss its implications in understanding the rich physics of TmMgGaO4. | Session 62: Triangular Lattice |
| 798 | Studying the Dynamic Magnetic Properties of the Triangular Antiferromagnet YbZnGaO4 in Applied Field | Steinhardt, William; Dissanayake, Sachith; Shi, Zhenzhong; Butch, Nicholas; Graf, David; Podlesnyak, Andrey; Liu, Yaohua; Zhao, Yang; Xu, Guangyong; Lynn, Jeffrey; Marjerrison, Casey; Haravifard, Sara | In this talk we discuss neutron scattering experiments in applied magnetic field to probe features of the “partially magnetized” state in YbZnGaO4, which generated great excitement in YbMgGaO4 as a possible signature in support of spinon Fermi surface hypothesis [1]. | Session 62: Triangular Lattice |
| 799 | A quantitative study of short-range correlations in triangular Ising antiferromagnet TmMgGaO4 via magnetic pair distribution function analysis | Baral, Raju; Frandsen, Benjamin; Fischer, Henry; Huang, Qing; Zhou, Haidong; Daum, Marcus; Dun, Zhiling; Mourigal, Martin | We present a magnetic model that reproduces the observed mPDF pattern with quantitative accuracy and discuss the significance of these results in the context of existing work on TmMgGaO 4. | Session 62: Triangular Lattice |
| 800 | Chiral correlation in triangular lattice Hubbard model | Chen, Bin-Bin; Li, Wei; Weichselbaum, Andreas | In this talk, I will focus on finite-size DMRG simulations of the TLH for system sizes that go clearly beyond [2] while also exploiting SU(2) spin symmetry. | Session 62: Triangular Lattice |
| 801 | Topological frustration: Quantum statistics of vortices from a dual theory of the XY ferromagnet | Dasgupta, Sayak; Zhang, Shu; Bah, Ibrahima; Tchernyshyov, Oleg | Here we show that topological frustration at the vortex core may induce a nontrivial quantum statistics of vortices. | Session 62: Triangular Lattice |
| 802 | Collective Spin and Charge 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 into superconductors. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 803 | An ab initio study of electron-hole pairs in the insulating single layer cuprates and nickelates | Lane, Christopher; Zhu, Jian-Xin | We perform a comparison study of the electronic and magnetic structure of a prototypical high-temperature superconductor La 2CuO 4 with the isostructural single-layer nickelate La 2NiO 4. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 804 | Low Temperature Specific Heat of Doped SrTiO3: Doping Dependence of the Effective Mass and Kadowaki-Woods Scaling Violation | McCalla, Eric; Navarro Gastiasoro, Maria; Cassuto, Guy; Fernandes, Rafael; Leighton, Chris | We discuss wide-doping-range (8 x 10 17 to 4 x 10 20 cm -3 Hall electron density) low temperature specific heat measurements on single crystal SrTiO 3:Nb, correlated with electronic transport data and tight-binding modeling [1]. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 805 | Influence of structural distortions on the magnetic order of rare-earth titanates | Najev, Ana; Pelc, Damjan; Hameed, Sajna; Joe, Joseph; Greven, Martin; Pozek, Miroslav | We have conducted NMR measurements on select rare-earth titanates. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 806 | Multipolar orders in Kondo materials | Lee, SungBin; Paramekanti, Arun | This talk will discuss our recent work, employing Landau theory and Monte Carlo simulations, showing that incorporating multispin interactions is important to understanding such ordered states. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 807 | Changes in phonon dispersion across metal-insulator transition in a Pr-containing cobaltite | Phelan, Daniel; Krogstad, Matthew; Schreiber, Nathaniel; Osborn, Raymond; Said, Ayman; Zheng, Hong; Rosenkranz, Stephan | We have measured the dispersion of acoustic phonons in a single crystal of (Pr 0.85Y 0.15) 0.7Ca 0.3CoO 3-δ in both the metallic and insulating states and have observed differences which arise at the phase transition temperature. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 808 | Phonon density of states of the infinite layer nickelate Nd0.8Sr0.2NiO2 | Rosenkranz, Stephan; Phelan, Daniel; Wang, Bixia; Zheng, Hong; Abernathy, Douglas; Mitchell, John; Osborn, Raymond | The recent report of superconductivity up to 15K in a thin film nickelate with similar crystal and electronic structures to that of the cuprates, suggests that these infinite-layer nickelates could harbor superconductivity with the same underlying pairing mechanism as the cuprates. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 809 | Study of competing order parameters and relaxation dynamics in La1/3Sr2/3FeO3 using first-principles | Nguyen, Nam; Singh, Vijay; Park, Hyowon | Using first-principles calculations, we identify two charge ordering structures can occur in this material. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 810 | Synthesis and characterization of bulk polycrystalline Nd1-xSrxNiO3 and Nd1-xSrxNiO2 | Wang, Bixia; Zheng, Hong; Rosenkranz, Stephan; Phelan, Daniel; Mitchell, John | In this work, we have synthesized bulk polycrystalline Nd 1-xSr xNiO 3 and Nd 1-xSr xNiO 2 compounds. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 811 | Quantum Materials for Energy Efficient Neuromorphic Computing: Defective La1-xSrxCoO3-d | Zhang, Shenli; Galli, Giulia | We present a first principle study of La 1-xSr xCoO 3-d , a promising candidate material to build devices for neuromorphic computers. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |
| 812 | Protonation-induced magnetic phase transition in SrRuO3 | Luo, Weidong; Tian, Zijun; Li, Zhuolu; Shen, Shengchun; Yu, Pu | In order to understand the protonation induced structural and magnetic phase transformations in SrRuO 3, we performed first-principles calculations. | Session 63: Unconventional Order and Phase Behaviors in Complex Oxides |