Highlights of Industrial and Applied Physics (FIAP) Talks @ APS 2021 March Meeting
American Physics Society (APS) March meeting is one of the largest physics meetings in the world. In 2021, the meeting will be held online due to COVID-19.
To help the community quickly catch up on the work to be presented in this meeting, Paper Digest Team processed all talk abstracts, and generated one highlight sentence (typically the main topic) for each. Readers are encouraged to read these machine generated highlights / summaries to quickly get the main idea of each talk. This article is on the talks related to Industrial and Applied Physics (FIAP).
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TABLE : Industrial and Applied Physics (FIAP)
| Title | Authors | Highlight | Session | |
|---|---|---|---|---|
| 1 | Electrostatic Control of Magnetism in a van der Waals Ferromagnetic Semiconductor | Verzhbitskiy, Ivan; Kurebayashi, Hidekazu; Cheng, Haixia; Zhou, Jun; Khan, Safe; Feng, Yuan; Eda, Goki | We find the magnetic easy-axis of doped CGT to lie within the plane of the crystal, which is in stark contrast to the out-of-plane easy-axis of the pristine material. | Session 1: 2D Magnets |
| 2 | Angle-resolved photoemission spectroscopy and spin dynamics measurements of MBE-grown ferromagnetic CrTe1-δ thin films | Ou, Yongxi; Pillsbury, Timothy; Rable, Jeffrey; Richardella, Anthony; Samarth, Nitin | Here, we report the MBE synthesis of ferromagnetic TMD thin films of CrTe 1-δ. | Session 1: 2D Magnets |
| 3 | Néel-type skyrmion in WTe2/Fe3GeTe2 van der Waals heterostructure | Wu, Yingying; Zhang, Senfu; zhang, junwei; Yin, Gen; Mao, Zhiqiang; Zhang, Xixiang; Wan, Caihua; Han, Xiufeng; Wang, Kang-Lung | In this work, we demonstrate the Dzyaloshinskii-Moriya interaction and Néel-type skyrmions are induced at the WTe 2/Fe 3GeTe 2 interface, a van der Waals heterostructure. | Session 1: 2D Magnets |
| 4 | Spin-orbit engineering in ferromagnetic van der Waals materials | Tafti, Fazel; Tartaglia, Thomas; Lado, Jose; Chan, Julia; Bahrami, Faranak; Burch, Kenneth; Ran, Ying | We will present triangular phase diagrams of the mixed halides and demonstrate that (a) the Curie and Weiss temperatures can be tuned continuously, (b) a frustration regime exists in these materials near CrCl 3, and (c) a metamagnetic transition is observed in the bulk crystals of CrClBrI, reminiscent of a spin-flip transition in bilayers of CrI 3. | Session 1: 2D Magnets |
| 5 | Structural monoclinicity and its evolution across magnetic phase transitions in few-layer CrI3 | Guo, Xiaoyu; Jin, Wencan; Ye, Zhipeng; Ye, Gaihua; Yang, Bowen; Kim, Hyun Ho; Xie, Hongchao; Tian, Shangjie; Yan, Shaohua; Lei, Hechang; Tsen, Adam; He, Rui; Zhao, Liuyan | Here, using polarization-resolved magneto-Raman spectroscopy, we have investigated layer-number, temperature, and magnetic field dependence of Raman spectra. | Session 1: 2D Magnets |
| 6 | Large cross-polarized Raman signal in CrI3, a first-principles study | Lei, Ming; Coh, Sinisa | We find unusually large cross-polarized Raman signature of Ag phonon mode in CrI3, in agreement with experiments. | Session 1: 2D Magnets |
| 7 | Competing antiferromagnetic order in transition metal dichalcogenides FexNbS2 | Wu, Shan; Xu, Zhijun; Haley, Shannon; Weber, Sophie; Maniv, Eran; Qiu, Yiming; Aczel, Adam; Neaton, Jeffrey; Analytis, James; Birgeneau, Robert | We comprehensively investigated the magnetic structures for two successive transitions at and off- stoichiometry. | Session 1: 2D Magnets |
| 8 | Temperature- and magnetic field-dependent Raman spectroscopy of layered, antiferromagnetic FePS3 | Simpson, Jeffrey; McCreary, Amber; Mai, Thuc; Garrity, Kevin; Dennis, Cindi; Hight Walker, Angela; Valdes Aguilar, Rolando | Using temperature- and magnetic field-dependent Raman spectroscopy as an optical probe of magnetic structure, we demonstrate that one of these Raman-active modes below T N is a magnon with a frequency of ≈3.7 THz (≈122 cm -1). | Session 1: 2D Magnets |
| 9 | Spin wave excitations in van der Waals honeycomb ferromagnets | Chen, Lebing; Chung, Jae-Ho; Dai, Pengcheng | In this talk, we will review and report the past and recent inelastic neutron scattering measurements of spin wave excitations in van der Waals ferromagnets CrX 3 (X = Br, Cr, I) and Cr 2Z 2Te 6 (Z = Si, Ge). | Session 1: 2D Magnets |
| 10 | Magnetothermal properties of honeycomb ferromagnet CrGeTe3 | Wakefield, Joshua; Kurumaji, Takashi; Suzuki, Takehito; Checkelsky, Joseph | We report the physical properties of single crystals of CrGeTe 3 grown with a self flux method focusing on magnetothermal effects. | Session 1: 2D Magnets |
| 11 | Magnetic-Order-Induced Band-Shift and Carrier Dynamics in CrSiTe3 Nanosheets | Jnawali, Giriraj; Pournia, Seyyedesadaf; Abbasian Shojaei, Iraj; Smith, Leigh; Gayles, Jacob; Ortiz, Brenden; Wilson, Stephen | Here we show the band-edge structure and photoresponse of the layered ferromagnet CrSiTe 3 (CST). | Session 1: 2D Magnets |
| 12 | Techniques for probing 2D magnetism with quantum coherent spins | Zhang, Xinyue; Wang, Yuxuan; Tartaglia, Thomas; Tafti, Fazel; Zhou, Brian | In this talk, we discuss the development and optimization of techniques for characterizing 2D magnetic systems with NV center magnetometers. | Session 1: 2D Magnets |
| 13 | Strain-induced change in two-dimensional antiferromagnets | Chung, Ting Fung; Zhang, Peiyao; Li, Quanwei; Yang, Sui; Zhang, Xiang | Here, we performed optical measurements to examine the effect of strain on the magnetic states of a few-layer CrI3. | Session 1: 2D Magnets |
| 14 | Spin-polarized conductivity and spin-dependent Seebeck effect in magnetized graphene | Ghiasi, Talieh; Kaverzin, Alexey; Dismukes, Avalon; de Wal, Dennis; Roy, Xavier; Van Wees, Bart | Spin-polarized conductivity and spin-dependent Seebeck effect in magnetized graphene | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 15 | Chiral spin excitations in graphene with proximity-induced spin-orbit coupling | Kumar, Abhishek; Maiti, Saurabh; Maslov, Dmitrii | Motivated by recent observations of CSE in the surface state of a 3D topological insulator, Bi2Se3, and in semiconductor heterostructures, we develop a theory of CSE in doped graphene with proximity-induced SOC both of Rashba or valley-Zeeman (VZ) types. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 16 | Spin Filtering Manipulation in WS2-based Magnetic Tunnel Junctions | Zatko, Victor; Galbiati, Marta; Galceran, Regina; Godel, Florian; Brus, Pierre; Bezencenent, Odile; Martin, Marie-Blandine; Servet, Bernard; Och, Mauro; Mattevi, Cecilia; Petroff, Frédéric; Fert, Albert; Dlubak, Bruno; Seneor, Pierre | We will detail a protocol to fabricate spin valves based on CVD grown WS 2 with step by step characterizations in support (Raman, photoluminescence, AFM). | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 17 | Spontaneous Valley Polarization of Interacting Carriers in a Monolayer Semiconductor | Crooker, Scott; Li, Jing; Goryca, Mateusz; Xu, Xiaodong; Wilson, Nathan; Stier, Andreas | We report magneto-absorption spectroscopy of electrostatically-gated WSe 2 monolayers in high magnetic fields up to 60 tesla. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 18 | Spatially-resolved Measurements of Spin Valley Polarization in Monolayer WSe2 | Batalden, Spencer; Mujid, Fauzia; Park, Jiwoong; Sih, Vanessa | Spatially-resolved Measurements of Spin Valley Polarization in Monolayer WSe2 | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 19 | Imaging the valley and orbital Hall effect in monolayer MoS2 | Haney, Paul; Amin, Vivek; Xue, Fei | We identify a previously unrecognized consequence of Berry curvature in these materials: an electric-field-induced change in the electrons’ charge density orientation. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 20 | Orbital Hall effect in bilayer transition metal dichalcogenides | Cysne, Tarik; Canonico, Luis; Costa, Marcio; Nardelli, Nicholas; Muniz, Roberto; Rappoport, Tatiana | Using Density Functional Theory, we show that the 2H-structural phase of a MoS 2 bilayer exhibits large orbital Hall signal in its insulating phase, in the absence of both SHE and VHE. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 21 | Orbital and Spin Hall effect: Effect of symmetry breaking and Density-Functional results for MoS2 | SAHU, PRATIK; Bhowal, Sayantika; Satpathy, Sashi | As a concrete example, we present our results from density-functional calculations for the 2D transition-metal-dichalcogenide (TMDC) materials such as MoS 2, a broken symmetry system. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 22 | Tunable Berry curvature and topological Nernst effect in biased bilayer WSe2 | Vargiamidis, Vassilios; Vasilopoulos, Panagiotis; Neophytou, Neophytos | We investigate the Berry curvature and anomalous thermoelectric transport in bilayer WSe 2 with broken inversion symmetry, e.g., due to a gate electric field, regardless of time-reversal symme-try. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 23 | Ab initio spin dynamics and spin-phonon relaxation in graphene multilayers | Habib, Adela; Xu, Junqing; Ping, Yuan; Sundararaman, Ravishankar | To this front, we present our investigations of spin dynamics and in particular spin-phonon relaxation fully from first-principles in single and bi-layer graphene in the presence of an external electric field and/or hBN substrate. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 24 | Enhancing Tunneling Current in CrX3 (X = Cl, I) Junctions using Transition Metal Dichalcogenides | Heath, Jonathan; Kuroda, Marcelo | Here we use first principles calculations within the density functional theory and Landauer’s formalism of ballistic transport to characterize 2H- MSe 2 ( M = Nb, Ta)/Cr X 3 ( X = Cl, I) based MTJs. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 25 | Orbital Hall insulating phase in transition metal dichalcogenide monolayers | Canonico, Luis; Cysne, Tarik; Molina-Sanchez, Alejandro; Muniz, Roberto; Rappoport, Tatiana | We showed that the 2H transition metal dichalcogenide (TMD) monolayers are orbital-Hall insulators [1]. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 26 | Valley-controlled transport in graphene/WSe2 heterostructures under an off-resonant polarized light | Zubair, Muhammad; Vasilopoulos, Panagiotis; Tahir, Muhammad | We investigate the electronic dispersion and transport properties of graphene/WSe 2 heterostructures in the presence of a proximity-induced spin-orbit coupling λ v, sublattice potential Δ, and an off-resonant circularly polarized light of frequency Ω and effective energy term Δ Ω. | Session 2: 2D Spintronics, Valleytronics, and Orbital Hall Effect |
| 27 | Novel Spin Torques in Antiferromagnetic FeRh | Gibbons, Jonathan; Dohi, Takaaki; Amin, Vivek; Xue, Fei; Arava, Hanu; Saglam, Hilal; Liu, Yuzi; Pearson, John; Petford-Long, Amanda; Haney, Paul; Stiles, Mark; Fukami, Shunsuke; Hoffmann, Axel | Novel Spin Torques in Antiferromagnetic FeRh | Session 3: Antiferromagnetic Spintronics |
| 28 | Staggered spin-orbit torques in antiferromagnets | Xue, Fei; Haney, Paul | Spin-orbit torques in a heterostructure composed of heavy metals and ferromagnets have been widely studied, with the aim of efficient electrical switching of the magnetization. | Session 3: Antiferromagnetic Spintronics |
| 29 | Nuclear spin Seebeck effect in antiferromagnets | Reitz, Derek; Tserkovnyak, Yaroslav | Nuclear spin Seebeck effect in antiferromagnets | Session 3: Antiferromagnetic Spintronics |
| 30 | Temperature dependence of the anisotropic magnetoresistance of the metallic antiferromagnet Fe2As | Wu, Junyi; Karigerasi, Manohar; Shoemaker, Daniel; Lorenz, Virginia; Cahill, David | We study AMR of single crystals of AF Fe 2As from T=5 K to above the Néel temperature, T N ∼ 353 K. With an applied magnetic field B rotating in the (001) plane, we observe a peak-to-peak AMR change of 1.3% for B>1 T at T=5 K, one order of magnitude larger than in CuMnAs, a widely studied candidate for AF spintronics. | Session 3: Antiferromagnetic Spintronics |
| 31 | Quantum spin torque driven transmutation of antiferromagnetic Mott insulator | Petrovic, Marko; Mondal, Priyanka; Feiguin, Adrian; Nikolic, Branislav | Here, we use the time-dependent density matrix renormalization group approach to predict how the injection of spin current into a normal metal coupled to AFMI induces a nonzero expectation value of AFMI localized spins. | Session 3: Antiferromagnetic Spintronics |
| 32 | Exceptional Point Location Dependence on Dipolar Interactions in Synthetic Antiferromagnets | Jeffrey, Teresa; Zhang, Wei; Sklenar, Joseph | In this work, we calculate EPs in S-AFMs using micromagnetic simulations [2]. | Session 3: Antiferromagnetic Spintronics |
| 33 | Neuromorphic Memory Rings based on Artificial Antiferromagnetic Neurons | Bradley, Hannah; Tyberkevych, Vasyl | Here we investigate the dynamical behavior of neuromorphic memory rings – periodic pulse generators formed by several AFM neurons coupled in a ring structure. | Session 3: Antiferromagnetic Spintronics |
| 34 | Spontaneous Hall and Nernst effects in antiferromagnets | Reichlova, Helena; Janda, Tomas; Markou, Anastasios; Kriegner, Dominik; Schlitz, Richard; Lopez Seeger, Rafael; Kounta, Ismaila; Zelezny, Jakub; Nemec, Petr; Schmoranzerova, Eva; Badura, Antonin; Thomas, Andy; Felser, Claudia; Baltz, Vincent; Michez, Lisa; Sinova, Jairo; Jungwirth, Thomas; Smejkal, Libor; Wunderlich, Joerg; Goennenwein, Sebastian | We demonstrate that the local magneto-thermal response can be employed for a spatially resolved visualization of the magnetic properties of the antiferromagnet [1]. | Session 3: Antiferromagnetic Spintronics |
| 35 | Spin-torque driven self-oscillations in non-collinear coplanar antiferromagnets | Shukla, Ankit; Rakheja, Shaloo | In this work, we use a combination of micromagnetics and an effective pendulum equation to model the oscillation dynamics in chiral systems like Mn3Ir and Mn3Sn. | Session 3: Antiferromagnetic Spintronics |
| 36 | Spin-torque switching of the noncollinear antiferromagnetic order in antiperovskites | Gurung, Gautam; Shao, Ding-Fu; Tsymbal, Evgeny | Here, we predict an electric control of the noncollinear AFM order in the antiperovskite materials by means of spin-transfer torque. | Session 3: Antiferromagnetic Spintronics |
| 37 | Spin superfluidity in noncollinear antiferromagnets | Li, Bo; Kovalev, Alexey | We extend the description of spin superfluidity to noncollinear antiferromagnets (nAFMs) and explore various realizations in exchange interaction dominated hexagonal antiferromagnets. | Session 3: Antiferromagnetic Spintronics |
| 38 | Probing the surface magnetism of antiferromagnets | Schuller, Ivan; Lapa, Pavel; Lee, Minhan; Roshchin, Igor; Belashchenko, Kirill | Using antiferromagnet-ferromagnet spin valves, we detected and studied uncompensated magnetization at the boundary of an antiferromagnetic FeF 2(110) layer at different temperatures and magnetic fields. | Session 3: Antiferromagnetic Spintronics |
| 39 | Observation of magnon-polarons in a uniaxial antiferromagnetic insulator Cr2O3 | Li, Junxue; Simensen, Haakon; Reitz, Derek; Sun, Qiyang; Yuan, Wei; Li, Chen; Tserkovnyak, Yaroslav; Brataas, Arne; Shi, Jing | Here we report an observation of antiferromagnetic (AFM) magnon-polarons in a uniaxial AFM insulator Cr 2O 3. | Session 3: Antiferromagnetic Spintronics |
| 40 | Expanding Bandwidth through Coupled Silicon and Hyperbolic Waveguides in the Near- and Mid-Infrared | He, Mingze; Halimi, Sami; Folland, Thomas; Sunku, Sai; Liu, Song; Edgar, James; Basov, Dmitri; Weiss, Sharon; Caldwell, Joshua | Here, we integrate hyperbolic phonon polariton (HPhP) waveguides within a slab of hexagonal boron nitride (hBN) onto a silicon photonics platform, enabling dual-band operation at both telecom (1.55 µm) and mid-infrared (6.1-7.4 µm) frequencies simultaneously. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 41 | Designing quantum states in two-dimensional systems by reconfiguring local magnetic proximity fields | Dlamini, Siphiwo; Matos Abiague, Alex | We theoretically investigate the effects of local, magnetic proximity fields generated by arrays of magnetic nanopillars (MNs) next to two-dimensional (2D) systems such as semiconductor quantum wells and 2D van der Waals crystals. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 42 | Cold source FET with 2D TMDs type III band aligned heterojunctions | Guo, shujin; Shi, Qing; Hu, Chen; Guo, Hong | In this work, CSFET with two-dimensional (2D) type-III band aligned WTe 2/HfS 2 heterojunction is investigated by using first-principles quantum transport simulations. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 43 | Engineering surface forces to enable large-area fabrication of two-dimensional material heterostructures | Satterthwaite, Peter; Zhu, Weikun; Jastrzebska-Perfect, Patricia; Gao, Hongze; Kitadai, Hikari; Ling, Xi; Niroui, Farnaz | In this talk we show that by engineering surface forces we can achieve such a clean transfer for both graphene and transition metal dichalcogenide monolayers, without the need for a sacrificial layer. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 44 | Photoswithchable upconverting nanoparticles | Lee, Changhwan; Xu, Emma; Nam, Sang Hwan; Suh, Yung Doug; Cohen, Bruce; Chan, Emory; Schuck, P. James | Here, we report photoswitching and blinking behaviors of lanthanide-doped nanocrystal under irradiation in the NIR I and II transparent window which can penetrate deeper in tissue without severe photodamage compared to visible and UV light. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 45 | Green Synthesized Iron Oxide Nanoparticles for Water Treatment | Getahun, Yohannes; El-Gendy, Ahmed | In this study, we synthesized functionalized iron oxide MNPs by novel green approach using plants, suitable for absorbing inorganic and organic pollutants. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 46 | Quantitative evaluation of thermoelectric characteristics of small-molecule organic semiconductors based on electronic structure calculations | Ohno, Masahiro; Shimizu, Koji; Watanabe, Satoshi | Targeting this problem, we propose a calculation method for quantitative evaluation of thermoelectric properties of organic semiconductors (OSCs) which facilitates the exploration of novel organic thermoelectrics. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 47 | Probing ultrafast dynamics in aqueous pyrazine solution using liquid microjet based time-resolved photoelectron spectroscopy | Ahsan, Md Sabbir; Wilkinson, Iain | In this talk, the electronic energetics and associated ultrafast relaxation mechanism of aqueous pyrazine will be presented and compared to corresponding gas-phase results. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 48 | Direct biomolecules conjugation electrochemical probe development by active palladium nano-thin-film nano-structure for cancer and virus development | Chang, Chia-Ching; Chang, Chia-Yu; Lu, Yi-Xiang | Here, we have developed an ITO protected Pd nano-thin-film which was coated on the PET substrate probe (Pd NTF-PET). | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 49 | Target DNA detection by solid-state nanopores using gold nanoparticle probes | Akahori, Rena; Esashika, Keiko; Yanagi, Itaru; Toshiharu, Saiki | Target DNA detection by solid-state nanopores using gold nanoparticle probes | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 50 | Study of Rashba Spin-Orbit Coupling in 2D and 3D Lead Iodide Perovskites | Pham, Minh; Amerling, Eric; Luong, Hoang; Pham, Huy; Larsen, George; Whittaker-Brooks, Luisa; Nguyen, Tho | We studied spin dynamics of charge carriers in the superlattice-like Ruddlesden-Popper hybrid lead iodide perovskite semiconductors, 2D (BA) 2(MA)Pb 2I 7, and 3D MAPbI 3 using the magnetic field effect (MFE) on conductivity and electroluminescence in their light-emitting diodes (LEDs) at cryogenic temperatures. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 51 | First-Principles Investigation of Selective Gas Sensing Property of Two-Dimensional 1T-HfTe2 | Chakraborty, Dwaipayan; Johari, Priya | With these motivations, we here explored the potentiality of 2D 1T-HfTe 2 as a gas sensor. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 52 | Plasmonic Nanoparticle Sensitization of Colorimetric Sensing Dyes | Plumitallo, Joseph; Kim, Jin Ho; Johnson, Silverio; Yu, Mark; Giardini, Stephen; Dinneen, Sean; Osgood, Richard; Xu, Jimmy | In this presentation we will unpack these ideas applied to colorimetric sensors. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 53 | Single-Molecule Characterization of Gold Nanoparticle Bioconjugates with Rabbit IgG and EGFR Antibodies using Microwell Array Analysis | Abdul-Moqueet, Mohammad; Nowakowski, Jerzy; Mayer, Kathryn | A microwell-array based method has been developed to characterize NBCs at the single-particle level, in order to understand their surface chemistry and drive optimization of their preparation. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 54 | Examining the Performance in Low-Power Flexible OFETs: An Energetics Perspective | Yadav, Yogesh; Singh, Samarendra | 1 We examine the shortcomings of the flexible organic field-effect transistors (OFETs) from an energetics point of view. | Session 4: Applications for Nano, Bio, and Flexible Technology |
| 55 | Current-voltage characteristics of silicon nitride membranes in solution | Yanagi, Itaru; Takeda, Ken-ichi | In this study, by using thin SiN membranes with large and precisely defined areas, we achieved accurate and reproducible measurements of the current-voltage ( I- V) characteristics of SiN membranes in solution. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 56 | Elastic Constants of Boron Arsenide and Boron Phosphide Crystals | Mahat, Sushant; Li, Sheng; Wu, Hanlin; Koirala, Pawan; Lv, Bing; Cahill, David | We report the elastic constants of boron arsenide and boron phosphide single crystals derived from Brillouin frequencies measured by picosecond interferometry. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 57 | Merging Bound States in the Continuum at Off-high Symmetry Points | Xiao, Meng; Kang, Meng | Here we propose a new approach to construct merging BICs at almost an arbitrary point in the reciprocal space. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 58 | Geometric tuning of stress in silicon nitride beam resonators | Hoch, David; Yao, Xiong; Poot, Menno | We used an integrated Mach-Zehnder interferometer to optically sense the driven motion of the suspended beams and studied the stress-dependence of the eigenfrequencies and quality factors. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 59 | Alloying orthorhombic Ga2O3 with Al2O3 /In2O3 | Seacat, Sierra; Lyons, John; Peelaers, Hartwin | Here we use density functional theory with hybrid functionals to elucidate how alloying with Al 2O 3 and In 2O 3 can be used to modify the structural and electronic properties. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 60 | Bound Charge Engineering: A Novel Approach to Strengthen Screening in Low-Dimensional Systems | Prentki, Raphaël; Harb, Mohammed; Liu, Lei; Guo, Hong | To resolve this problem, we introduce the idea of bound charge engineering (BCE), a novel approach of engineering surface bound charges to strengthen screening. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 61 | Towards High-Performance Monolayer Semiconductor Transistors with Semimetallic Ohmic Contact | Lin, Yuxuan; Su, Cong; Shen, Pin-Chun; Chou, Ang-Sheng; Cheng, Chao-Ching; Park, Ji-Hoon; Chiu, Ming-Hui; Lu, Ang-Yu; Tang, Hao-Ling; Li, Ju; Zettl, Alex; Palacios, Tomas; Li, Lain-Jong; Bokor, Jeffrey; Kong, Jing | Through this approach, we achieve zero Schottky barrier height, a record-low contact resistance ( R C) of 123 Ω μm, and a record-high on-state current density ( I ON) of 1135 μA μm -1 on monolayer MoS 2. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 62 | Outstanding dielectric properties of ultra-thin CaF2 dielectric films | Wen, Chao; llarionov, Yury; Frammelsberger, Werner; Knobloch, Theresia; Hui, Fei; Grasser, Tibor; Lanza, Mario | In our work, we found that ultra-thin CaF 2 films synthesized by MBE show high homogeneity and low leakage currents. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 63 | Overcoming Acoustoelectric Material Limits of Piezoelectric Resonators using Epitaxial Aluminum Nitride | Zhao, Wenwen; Asadi, Mohammad; Li, Lei; Chaudhuri, Reet; Nomoto, Kazuki; Xing, Huili; Hwang, James; Jena, Debdeep | Taking advantage of epitaxial aluminum nitride developed for ultraviolet photonics and high-speed electronics, we have explored aluminum-nitride film-bulk acoustic resonators (FBARs) which can operate in the thickness-extension mode up to 40 GHz. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 64 | Layer-dependent mechanical properties and enhanced plasticity in the van der Waals chromium trihalide magnets | Cantos-Prieto, Fernando; Falin, Alexey; Alliati, Martin; Qian, Dong; Zhang, Rui; Tao, Tao; Barnett, Matthew; Santos, Elton; Li, Luhua; Navarro-Moratalla, Efren | Here we report the room temperature values of the Young’s modulus and the fracture strength of CrI 3 and CrCl 3 from bulk down to the few-layer limit. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 65 | Localization of Filaments in Resistive Switching Devices by Ion Irradiation | Ghazikhanian, Nareg; del Valle, Javier; Salev, Pavel; Kalcheim, Yoav; Adda, Coline; Schuller, Ivan | In this talk, we introduce a novel approach of using focused ion beam irradiation to “guide” the filament formation. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 66 | Graphene based pH sensing with extremely high sensitivity | Le, Son; Cho, Seulki; Balijepalli, Arvind; Richter, Curt | We have reported pH sensors based on two-dimensional (2D) MoS 2 dual-gated field-effect transistors (2D-MoS 2 dual-FETs) with sensitivity that greatly surpasses the Nernst limit of 59 mV/pH [1]. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 67 | Transfer-free fabrication of bottom-up graphene nanoribbon transistors | Mutlu, Zafer; Llinas, Juan; Jacobse, Peter; Piskun, Ilya; Blackwell, Raymond; Crommie, Michael; Fischer, Felix; Bokor, Jeffrey | Here we present a transfer-free method for the placement of seven-atom wide armchair GNRs on insulators substrates. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 68 | Enhanced band-to-band tunneling in direct-gap group-IV Ge1-xSnx alloys: impact of alloy band mixing | Dunne, Michael; Broderick, Christopher; Luisier, Mathieu; O’Reilly, Eoin | We analyse the impact of alloy band mixing and short-range disorder on band-to-band tunneling (BTBT) in bulk and nanowire Ge 1-xSn x, using large-scale atomistic electronic structure and non-equilibrium Green’s function calculations [3]. | Session 5: Applications of Semiconductors, Dielectrics, and Complex Oxides |
| 69 | Control of Plasmons in Topological Systems | Jiang, Zhihao; Schloemer, Henning; Haas, Stephan | In this work, we study plasmonic excitations in a topological system with a partially filled band, focusing on the effects of Coulomb interactions upon manipulating internal degrees of freedom, such as the sub-lattice orbitals. | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 70 | Solving for a bipolaron bound state in strontium titanate (SrTiO3) | Lin, Lisa | Solving for a bipolaron bound state in strontium titanate (SrTiO3) | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 71 | Proton strings and rings in atypical nucleation of ferroelectricity in ice | Lasave, Jorge; Koval, Sergio; Laio, Alessandro; Tosatti, Erio | We introduce a lattice model based on dipolar interactions plus a frustrating term that enforces the ice rule (IR). | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 72 | Ultrafast photoexcitation driven non-thermal amorphization of GeTe | Yang, Liqiu; Tiwari, Subodh; Shimojo, Fuyuki; Kalia, Rajiv; Nakano, Aiichiro; Vashishta, Priya; Branicio, Paulo | In this work, we modeled the photoexcitation-driven non-thermal amorphization process in GeTe using nonadiabatic quantum molecular dynamics (NAQMD). | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 73 | Amorphous GexSe1-x and its hierarchical structures by mean of molecular dynamics simulations | Tavanti, Francesco; Dianat, Behnood; Catellani, Alessandra; Calzolari, Arrigo | To describe the structure of Ge xSe 1-x in the 0.4-0.6 range at the atomic level, we employed classical molecular dynamics (MD) simulations of large systems and for long timescales allowing the structural rearrangement of the amorphous state at room temperature. | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 74 | Anisotropic High Carrier Mobilities of One-Third-Hydrogenated Group V Elemental Monolayers | Zhang, Xianli; Bao, Deliang; Dong, Wenhan; Sun, Jiatao; Du, Shixuan | We employ first principles calculations to investigate the atomic structures and electronic properties of one-third-hydrogenated (OTH) group-VA elemental monolayers, that is, OTH-X (X = As, Sb, or Bi). | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 75 | A Novel Two-Dimensional material for next generation piezoelectric and thermoelectric applications | Kadioglu, Yelda; Ataca, Can | We predicted a new stable monolayer form of SnX 3 family which can be extracted from its bulk structure by exfoliation methods. | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 76 | Pressure-Induced Insulator-Metal Phase Transition in Si2Te3 from First-Principles Calculations | Bhattarai, Romakanta; Shen, Xiao | Using the evolutionary algorithm combined with the first-principles density functional theory calculations, we identify two metallic phases of Si 2Te 3 to account for the observation. | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 77 | Changing soft mode dynamics of the polar metal EuTiO3 with photodoping | Hickox-Young, Daniel; Ron, Alon; Ahadi, Kaveh; Puggioni, Danilo; Mehio, Omar; Rondinelli, James; Stemmer, Susanne; Hsieh, David | We show first principles evidence of changes in the TiO 6 displacement patterns under doping and discuss several hypotheses which may explain this new phenomenon. | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 78 | Investigating Local Disorder in ZnSnN2 with X-ray Absorption Spectroscopy | Melamed, Celeste; Miller, Moira; Cordell, Jacob; Schnepf, Rekha; Livingood, Alyssa; Pucurimay, Linda; Pan, Jie; Heinselman, Karen; Nordlund, Dennis; Lany, Stephan; Toberer, Eric; Christensen, Steven; Tamboli, Adele | In this work, we investigate the local bonding environment in sputtered ZnSnN 2 thin films using X-ray absorption near-edge spectroscopy (XANES). | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 79 | Structural stability of monolayer GaSe with trigonal-antiprismatic structure studied by first-principles calculations | Nitta, Hirokazu; Yonezawa, Takahiro; Fleurence, Antoine; Yamada-Takamura, Yukiko; Ozaki, Taisuke | In this study [2], the structural stability and electronic states of AP-phase GaSe monolayer were studied by first-principles calculations. | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 80 | Phase Stability and Thickness-Dependence of Properties in Silicon Nanomembranes Under Pressure | Ambriz Ponce, Joel; Parker, William | To understand and predict the energetic and mechanical properties of these membranes in contrast with bulk crystalline silicon, we model silicon nanomembranes at the electronic level in an atomistic model using density functional theory at varying levels of exchange-correlation functional. | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 81 | Far Infrared Reflectance Spectroscopy of High Entropy Rocksalt Structure Oxides | Afsharvosoughi, Tahereh; Crandles, David | In this experimental work the far infrared reflectance of a rocksalt structure high entropy oxide (NiCoMgZnCu)O for both single phase prepared by air quenching the mixture of five binary oxides from 1100 oC and a multiphase sample were measured between 50 cm -1 to 1000 cm -1 and temperatures between 4 and 300K in order to study the phonon vibrational modes and the effect of the antiferromagnetic transition on the modes. | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 82 | Raman Scattering in Medium and High Entropy Rocksalt Oxides | Crandles, David; Afsharvosoughi, Tahereh; Reedyk, Maureen | Raman Scattering in Medium and High Entropy Rocksalt Oxides | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 83 | First-principles study of Si and O co-doped band gap opening of TiN | Shi, Jia; Le, Duy; Rahman, Talat | We present here results of density functional theory based calculations of the band structure for the TiN with homogeneous doping using Si dopant (Ti is substituted by Si) and O dopant (N is substituted by O or O atoms are at the interstitial positions) to explain the above metal-insulator transition. | Session 6: Atomic Structure, Lattice Properties and Phase Transitions |
| 84 | Fractional quantized conductance in quasi-one dimensional electrons | Kumar, Sanjeev; Pepper, Michael; Ritchie, David; Farrer, Ian | In this work, we show that when a 1D quantum wire was relaxed from symmetry to highly asymmetric confinement potential close to the 1D-2D transition, conductance plateaux with both even and odd denominators such as 1/6, 1/2 and 2/5 were produced (in units of e2/h). | Session 7: Ballistic Transport in Semiconductor Devices |
| 85 | Atomic tunneling in crystalline BaTiS3 | Hermann, Raphael; Manley, Michael; Winn, Barry; Page, Katharine; Minnich, Austin; Moon, Jaeyun; Alatas, Ahmet; Ravichandran, Jayakanth | By combining inelastic x-ray scattering phonon spectroscopy and high-resolution inelastic neutron scattering we find evidence for the dynamic disorder scenario for Ti occupying a double-well potential. | Session 7: Ballistic Transport in Semiconductor Devices |
| 86 | Mapping Confinement Potential in a Quasi-1D Electron System | Rathi, Servin; Kumar, Sanjeev | We investigate the channel potential profiles in a one-dimensional (1D) electron gas defined by a pair of split-gate and a top gate on the surface of GaAs/AlGaAs heterostructure. | Session 7: Ballistic Transport in Semiconductor Devices |
| 87 | Conductance quantization and finite-size effects in cleaved edge overgrowth GaAs quantum wires | Weldeyesus, Henok; Scheller, Christian; Patlatiuk, Taras; Barak, Gilad; Yacoby, Amir; Pfeiffer, Loren; West, Ken; Zumbuhl, Dominik | Here we present the dependence on wire length, and observe a steeper slope over increasing temperatures in short 2 μm wires compared to 6 μm wires, which agrees with theory from Aseev et al. | Session 7: Ballistic Transport in Semiconductor Devices |
| 88 | Quantized Conductance in a One-Dimensional Ballistic Oxide Nanodevice | Jouan, Alexis; Singh, G.; Lesne, Edouard; Vaz, Diogo; Bibes, Manuel; Barthélémy, Agnès; Ulysse, Christian; Stornaiuolo, Daniela; Salluzo, Marco; Hurand, Simon; Lesueur, Jerome; Feuillet-Palma, Cheryl; Bergeal, Nicolas | In this presentation we show that a quantum point contact can be formed in a LaAlO3/SrTiO3 interface through electrostatic confinement of the 2DEG using a split gate. | Session 7: Ballistic Transport in Semiconductor Devices |
| 89 | Disorder information from conductance: a quantum inverse problem | mukim, shardul; Ferreira, Mauro | We propose a procedure in which valuable compositional information can be extracted from the seemingly noisy spectral conductance of a two-terminal disordered quantum device. | Session 7: Ballistic Transport in Semiconductor Devices |
| 90 | Transverse magnetic focusing as measurement tool for electron-electron interactions in GaAs/AlGaAs | Heremans, Jean; Gupta, Adbhut; Kataria, Gitansh; Chandra, Mani; Fallahi, Saeed; Gardner, Geoff; Manfra, Michael | Transverse magnetic focusing as measurement tool for electron-electron interactions in GaAs/AlGaAs | Session 7: Ballistic Transport in Semiconductor Devices |
| 91 | Hydrodynamic and ballistic transport over large length scales in GaAs/AlGaAs | Gupta, Adbhut; Heremans, Jean; Kataria, Gitansh; Chandra, Mani; Fallahi, Saeed; Gardner, Geoff; Manfra, Michael | Hydrodynamic and ballistic transport over large length scales in GaAs/AlGaAs | Session 7: Ballistic Transport in Semiconductor Devices |
| 92 | High-performance, electrolyte-gated vertical organic nanoscale transistors | Lenz, Jakob; Weitz, R. T. | Here we will present our previous work about electrolyte gated vertical organic field effect transistors (VOFETs) reaching uniquely high current densities in the MA cm -2 regime [1]. | Session 7: Ballistic Transport in Semiconductor Devices |
| 93 | Kinetic Inductance in Ballistic Transport | Singhal, Jashan; Jena, Debdeep | Using a generalized formulation of ballistic transport, we investigate the generalized kinetic inductance in a d-dimensional conductor with various band-structures (e.g. parabolic and conical) in the ballistic limit. | Session 7: Ballistic Transport in Semiconductor Devices |
| 94 | Current vortices in ballistic transport: Collective motion without interactions | Chandra, Mani; Kataria, Gitansh | We show that, despite no interactions, the ballistic regime also gives rise to vortices. | Session 7: Ballistic Transport in Semiconductor Devices |
| 95 | Quantum tunneling in the dice lattice irradiated with circularly polarized light | Dahal, Dipendra; Gumbs, Godfrey | We investigate the properties of quantum tunneling across a smooth square electrostatic potential barrier in the dice model irradiated with circularly polarized light. | Session 7: Ballistic Transport in Semiconductor Devices |
| 96 | Investigation of Stark shift and charge noise on a centrosymmetric diamond defect | De Santis, Lorenzo; Trusheim, Matthew; Chen, Kevin; Englund, Dirk | Here we investigate the effect of an external electric field on the optical transition of a single tin-vacancy (SnV) center in diamond. | Session 8: Defects in Diamond |
| 97 | Calculating the Hyperfine Tensors for Group IV Impurity-Vacancy Centers in Diamond: A Hybrid Density-Functional Theory Approach | Kuate Defo, Rodrick; Kaxiras, Efthimios; Richardson, Steven | We show in this work that when X V – color centers exhibit a Jahn-Teller distortion, the result is an anisotropic distribution of the hyperfine interaction strength among the neighboring 13C nuclei. | Session 8: Defects in Diamond |
| 98 | Nuclear Magnetic Resonance of Nano-scale Quantum Materials detected by Nitrogen Vacancy Ensembles in Diamond | Henshaw, Jacob; Kehayias, Pauli; Ziabari, Maziar; Lu, Tzu-Ming; Ivanov, Sergei; Bielejec, Edward; Lilly, Michael; Mounce, Andrew | Here, we present sensitivity optimization for near surface NV ensembles and considerations for target nuclear isotopes. | Session 8: Defects in Diamond |
| 99 | Engineering highly coherent shallow Nitrogen Vacancy centers with long coherence times for biosensing experiments | Rodgers, Lila; Nguyen, Suong; Sangtawesin, Sorawis; Meynell, Simon; Stacey, Alastair; Rovny, Jared; Yuan, Zhiyang; Fitzpatrick, Mattias; Hughes, Lillian; Gumann, Pat; Jaye, Cherno; Weiland, Conan; Thomsen, Lars; Cowie, Bruce; Jayich, Ania; Knowles, Robert; De Leon, Nathalie | To address these challenges, we built an ultra-high vacuum cluster tool that combines surface preparation and characterization with NV spin measurements. | Session 8: Defects in Diamond |
| 100 | Optically detected magnetic resonance in neutral silicon vacancy centers in diamond via bound exciton states | Zhang, Zihuai; Stevenson, Paul; Thiering, Gergö; Rose, Brendon; Huang, Ding; Edmonds, Andrew; Markham, Matthew; Lyon, Stephen; Gali, Adam; De Leon, Nathalie | In this talk, I will discuss the realization of optically detected magnetic resonance and coherent control of SiV 0 centers at cryogenic temperatures, enabled by efficient optical spin polarization via previously un-reported higher-lying excited states. | Session 8: Defects in Diamond |
| 101 | Demonstration of NV-detected Electron Spin Resonance at 4.2 Tesla | Fortman, Benjamin; Hang, Yuxiao; Tischler, Noah; Takahashi, Susumu | Within this talk we present our recent demonstration of NV-detected ESR from both single and ensemble NV spin systems at the highest magnetic field to date, 4.2 Tesla [2]. | Session 8: Defects in Diamond |
| 102 | Coherence and spin relaxation time of near-surface NV centers | Pershin, Anton; Ivady, Viktor; Gali, Adam | Here, we theoretically investigate the coherence time and spin relaxation time of near surface NV centers for different surfaces and surface terminations. | Session 8: Defects in Diamond |
| 103 | Transport of photogenerated carriers between individual NV centers in diamond | Lozovoi, Artur; Daw, Damon; Vizkelethy, Gyorgy; Bielejec, Edward; Jayakumar, Harishankar; Meriles, Carlos | In this work, we articulate protocols for precise control over the charge state and photoionization of single NV centers implanted in bulk pure diamond. | Session 8: Defects in Diamond |
| 104 | Density Functional Theory Study of the Surface Coverage of H, OH, and O Functional Groups on Diamond (100) Surfaces | Cruz, Jenille; Groves, Michael; Neupane, Mahesh; Ruzmetov, Dimtry; Birdwell, A.; Weil, James; Shah, Pankaj; Ivanov, Tony | In this research, various degrees of surface coverage of H, OH, and ether groups terminated on the top carbon layer of diamond (100) surfaces were computationally studied using Density Functional Theory (DFT). | Session 8: Defects in Diamond |
| 105 | Defects for quantum engineering | Bassett, Lee | This talk will introduce the opportunities and challenges of identifying point defects, including several new approaches to efficiently predict, characterize, and engineer their properties for quantum science and technology. | Session 8: Defects in Diamond |
| 106 | Reduction of surface spin-induced electron spin relaxations in nanodiamonds | Hang, Yuxiao; Gurgenidze, Ana; Fortman, Benjamin; Peng, Zaili; Takahashi, Susumu | In this presentation, we discuss the improvement of T 1 and T 2 of single-substitutional nitrogen impurity (P1) centers in NDs by removing the surface spins [2]. | Session 8: Defects in Diamond |
| 107 | High-throughput identification of point defects in SiC | Davidsson, Joel; Ivady, Viktor; Armiento, Rickard; Abrikosov, Igor | In earlier work, we made a convergence study for divacancies in 4H-SiC. | Session 9: Defects in SiC and hBN |
| 108 | First Principle Characterization of Optical Charge State Conversion of the Carbon Antisite-Vacancy in 4H-SiC | Bulancea Lindvall, Oscar; Ivády, Viktor; Armiento, Rickard; Abrikosov, Igor | In this work, we study the carbon antisite-vacancy pair (C SiV C) in 4H-SiC which shows promise for optical transitions at telecom wavelength 1 and is thought to be involved in ultrabright transitions at room temperature 2. | Session 9: Defects in SiC and hBN |
| 109 | The mystery of the missing neutral Si vacancy in 3C-SiC solved | Schultz, Peter; Van Ginhoven, Renee; Edwards, Arthur | We find a lower energy yet for a high-spin triplet v(0) distorted from T d, confirmed in extrapolations from supercells up to large 1000-sites using DFT/GGA. | Session 9: Defects in SiC and hBN |
| 110 | Spin Structure and Resonant Driving of Spin-1/2 Defects in SiC | Tissot, Benedikt; Burkard, Guido | We model defects that have one active electron with spin 1/2 in a d-orbital subspace. | Session 9: Defects in SiC and hBN |
| 111 | The light years: Atomic-scale quantum photonics with combined optical and electron microscopy | Dionne, Jennifer | This presentation will describe our efforts to probe and control color centers in two promising materials: 1) hexagonal boron nitride (hBN) and 2) diamond nanoparticles. | Session 9: Defects in SiC and hBN |
| 112 | Probing the Optical Dynamics of Quantum Emitters in Hexagonal Boron Nitride | Patel, Raj; Hopper, David; Huang, Tzu-Yung; Gusdorff, Jordan; Porat, Benjamin; Bassett, Lee | We compare these observations to theoretical models of the QEs’ electronic structure. | Session 9: Defects in SiC and hBN |
| 113 | Excitation Energies of Defects in Hexagonal Boron Nitride via an Embedding Method using Auxilliary-Field Quantum Monte Carlo | Busemeyer, Brian; Zhang, Shiwei | We were able to reach sufficiently large supercell sizes by applying an embedding method. | Session 9: Defects in SiC and hBN |
| 114 | Formation energies of charged defects in 2D materials – a new perspective | O’Hara, Andrew; Tuttle, Blair; Zhang, Xiaoguang; Pantelides, Sokrates | In this work, we present an alternative formulation, derived from statistical mechanics, which dictates that supercells are naturally neutral: “charged defects” are merely ionized, by trading carriers with the energy bands (charge neutrality of the crystal is an essential ingredient of the statistical mechanics of electrons in semiconductors). | Session 9: Defects in SiC and hBN |
| 115 | Scaling quantum systems with silicon carbide and molecules | Awschalom, David | We demonstrate the optical initialization and readout, and coherent control, of ground-state spins in organometallic molecules [4]. | Session 9: Defects in SiC and hBN |
| 116 | Density-Matrix Theory with Renormalized Electron-Laser Coupling for Quantum-Dot Nonlinear Optical Response | Huang, Danhong; Lu, Xuejun; Fan, Shanhui | A density-matrix theory has been employed for studying coherent electron dynamics in time-dependent occupation factors and induced quantum coherence for single and double quantum dots coupled to two incident laser fields. | Session 10: Electronic Structure: Theory and Spectra |
| 117 | Spin-orbit coupling in wurtzite quantum wells | Penteado, Poliana; Fu, Jiyong; Candido, Denis; Ferreira, Gerson; Pires, Diego; Bernardes, Esmerindo; Egues, Carlos | In this work, we derive an effective spin-orbit Hamiltonian for conduction electrons valid for quantum wells, wires, and dots with arbitrary confining potentials and external magnetic fields. | Session 10: Electronic Structure: Theory and Spectra |
| 118 | First-Principles Study of Microscopic Mechanism of High Ductility of Silver Sulfide/Selenide | Hokyo, Hinata; Misawa, Masaaki; Fukushima, Shogo; Shimamura, Kohei; Koura, Akihide; Shimojo, Fuyuki | Experimental studies have reported that the ductility of Ag 2S 1-xSe x mixtures is confirmed up to x = 0.6 with monoclinic Ag 2S-type structure. | Session 10: Electronic Structure: Theory and Spectra |
| 119 | Real space formulation for the electronic structure of randomly disordered quaternary semiconductor alloys applied on two dimensional (C2)x(BN)1-x | Datta, Sujoy | C 6 1340 (1973)] which can perform configurational averaging on all possible arrangements by a tricky and fast mathematical formulation is utilized to propose an elegant method of calculating the electronic properties of semiconductor alloys, especially, the quaternary alloys with a preference towards the formation of particular bonds. | Session 10: Electronic Structure: Theory and Spectra |
| 120 | Temperature-induced magnetoplasmon excitations in a perpendicular magnetic field for an α-T3 lattice. | Balassis, Antonios; Gumbs, Godfrey; Huang, Danhong; Iurov, Andrii; Roslyak, Oleksiy | We compare the magnetoplasmon dispersion relations for monolayer α-T 3 when the sample is doped with carriers in the conduction band and the temperature T is zero with the case when the temperature is finite and there is no doping. | Session 10: Electronic Structure: Theory and Spectra |
| 121 | Many Body Theory of Exciton and Trions in 2D Materials: Exciton-Trion Supersposition States and Exciton-Polarons | Rana, Farhan; Koksal, Okan; Jung, Minwoo; Manolatou, Christina; Shvets, Gennady | We show that in doped 2D materials, exciton and trions are strongly coupled as a result of Coulomb interactions and the resulting approximate eigenstates are exciton-trion supersposition states and correspond to the two peaks seen experimentally in the absorption spectra [1]. | Session 10: Electronic Structure: Theory and Spectra |
| 122 | Electronic structure of semiconductor nanoparticles from stochastic evaluation of imaginary-time path integral | Kryjevski, Andrei | We find that approximating the fermion action by its leading order polarization term results in a positive-definite integrand, and is a very good approximation of the full action. | Session 10: Electronic Structure: Theory and Spectra |
| 123 | Long-distance coupling and energy transfer between exciton states in magnetically controlled microcavities | Suffczynski, Jan; Sciesiek, Maciej; Sawicki, Krzysztof; Pacuski, Wojciech; Sobczak, Kamil; Kazimierczuk, Tomasz; Golnik, Andrzej | Here, we design and fabricate epitaxially a structure comprising two (Cd,Zn)Te based microcavities separated by over 2 µm and coupled through a semitransparent Bragg mirror. | Session 10: Electronic Structure: Theory and Spectra |
| 124 | Revealing the true bulk As-antisite defect in GaAs(110) using DFT calculations and STM/STS measurements | Escano, Mary Clare; Balgos, Maria Herminia; Nguyen, Tien Quang; Prieto, Elizabeth Ann; Estacio, Elmer; Salvador, Arnel; Somintac, Armando; Jaculbia, Rafael; Hayazawa, Norihiko; Kim, Yousoo; Tani, Masahiko | In this work, we were able to obtain the atomic and electronic characteristics of As Ga in GaAs(110) akin to bulk-As Ga using DFT calculations and STM/STS spectra. | Session 10: Electronic Structure: Theory and Spectra |
| 125 | First principle investigation of electronic, transport, and bulk properties of zinc-blende magnesium sulfide (MgS) | Bhandari, Uttam; Ayirizia, Blaise; Malozovsky, Yuriy; Franklin, Lashounda; Bagayoko, Diola | We have studied the electronic, structural, and transport properties of the zinc-blende magnesium sulfide (zb-MgS), using Density Functional Theory (DFT). | Session 10: Electronic Structure: Theory and Spectra |
| 126 | Quasiparticle band structure for SrTiO3 and BaTiO3: A combined G0W0 and LDA+U approach | Lopez-Candales, Gabe; Tang, Zhao; Xia, Weiyi; Zhang, Peihong | We present the quasiparticle band structures of SrTiO 3 and BaTiO 3, two seemingly simple oxides. | Session 10: Electronic Structure: Theory and Spectra |
| 127 | Physics of the indirect- to direct-gap transition in group-IV semiconductor alloys | Broderick, Christopher; O’Reilly, Eoin | Recent analysis has revealed the nature of the band structure of Ge 1-x(C,Sn,Pb) x alloys, highlighting that alloy band mixing effects play a critical and overlooked role [1-3]. | Session 10: Electronic Structure: Theory and Spectra |
| 128 | Density Functional Theory Studies of Protective Interlayer of Graphene for the Back Contact of Copper Zinc Tin Sulphur Thin Film Solar Cell | Chong, Yau Lun Felix; Zhu, Junyi | Here, we propose a new protective material of graphene as an effective diffusion barrier to block any S atom diffusion. | Session 10: Electronic Structure: Theory and Spectra |
| 129 | Optical Properties of Cs2AgBiBr6 | Tower, Collin; Reedyk, Maureen | Optical Properties of Cs2AgBiBr6 | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 130 | Quasiparticle energies and excitonic effects of chromium trichloride | Zhu, Linghan; Yang, Li | Employing first-principles many-body perturbation simulations, we reveal enhanced excitonic effects in 2D and bulk forms of magnetic CrCl3. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 131 | Understanding Optomechanical properties of TaS2 from first principles | Haldar, Anubhab; Cortes, Cristian; Gray, Stephen; Sharifzadeh, Sahar; Darancet, Pierre | Here, we utilize first-principles density functional theory (DFT) and time-dependent TDDFT to investigate the optomechanical response of 1T-TaS2. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 132 | Analysis of critical points in temperature dependent and time resolved ellipsometry spectra of Ge using digital filtering | Emminger, Carola; Abadizaman, Farzin; Samarasingha Arachchige, Nuwanjula; Menendez, Jose; Espinoza, Shirly; Richter, Steffen; Rebarz, Mateusz; Herrfurth, Oliver; Zahradník, Martin; Schmidt-Grund, Rüdiger; Andreasson, Jakob; Zollner, Stefan | We analyze critical points (CPs) in the dielectric function (DF) of Ge measured with static and time-resolved spectroscopic ellipsometry. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 133 | Tuning the Magnetostructural Phases of Pr2O3 with Pressure and Magnetic Field | Slimak, John; Sethi, Astha; Kolodiazhnyi, Taras; Cooper, Lance | We present temperature-, pressure-, and magnetic field-dependent Raman scattering measurements of Pr 2O 3, which reveal phonon anomalies, CEF excitations, and evidence for strong phonon-CEF coupling. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 134 | What is origin of visible photoluminescence in the lead-free double-perovskite Cs2InAgCl6? | Ha, Viet-Anh; Lee, Hyungjun; Volonakis, George; Giustino, Feliciano | In this work we address the question of what is the underlying physical mechanism of the PL in Cs 2InAgCl 6. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 135 | Effect of Pulsed Laser Annealing on the optoelectronic properties of ZnO thin films | Zobair, Md Abu; Karmakar, Bishwajite; Taufique, M.F.N.; Haque, Ariful; Ghosh, Kartik | This research aims to achieve p-type semiconductor through pulsed laser annealing (PLA) and controlling other electronic and optical properties necessary for optoelectronic applications. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 136 | Influence of Quantum Dot Morphology on the Optical Properties of GaSb/GaAs Multilayers | Greenhill, Christian; Chang, Alexander; Zech, Eric; Clark, Stephen; Balakrishnan, Ganesh; Goldman, Rachel | We examine the influence of quantum dot (QD) morphology on the optical properties of two-dimensional (2D) GaSb/GaAs multilayers, with and without three-dimensional nanostructures. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 137 | Modeling optical absorption in GeSn alloys for photonic device applications | Johnson (Pending APS Join), Michael; Li, Zairui; Mathews, Jay | We use modeling to predict the absorption coefficient of GeSn alloys near the direct band gap with various amounts of Sn and strain. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 138 | A novel fundamental bound on effective masses in photovoltaic materials | Banyas, Ella; Tan, Liang | As an effort to theoretically investigate the links between atomic and electronic structure, we use a local orbital-based approach and the nearsightedness principle of Prodan and Kohn to derive a novel analytic bound on the effective mass, which is inversely proportional to carrier mobility in the Boltzmann transport limit. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 139 | Combined impact of resonance bond engineering and Peierls distortion on electronic density of states in bulk Ge2Sb2Te(5-5x)Se5x p phase change materials | Chatterjee, Utpal; Zhao, Junjing; Xu, Zhenyang; Li, Junqiang; Louca, Despina; Chern, Gia-wei | We present direct evidence for (i) finite electronic density of states (DOS) at the chemical potential for all measured x as expected in the crystalline phase, and (ii) an unusual suppression in the DOS with increasing x over an energy range comparable to the entire valence band. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 140 | A model of dephasing in shift current processes | Fregoso, Benjamin | We construct a simple model of dissipation beyond the relaxation-time approximation for shift current processes for electrons in a one-dimensional chain of ions lacking inversion symmetry and coupled to external electric and magnetic fields. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 141 | Temperature dependence of optical phonon bands in GaP | Samarasingha Arachchige, Nuwanjula; Zollner, Stefan | We explore the effect of temperature on the frequency and linewidth of transverse (TO) and longitudinal (LO) optical phonons in bulk gallium phosphide (GaP) using FTIR ellipsometry from 0.03 to 0.80 eV from 80-720 K. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 142 | Origins of giant optical anisotropy in quasi-one-dimensional transition metal chalcogenides | Ren, Guodong; Zhao, Boyang; Thind, Arashdeep; Salman, Jad; Wang, Nan; Cao, Tengfei; Cavin, John; Wang, Han; Kats, Mikhail; Ravichandran, Jayakanth; Mishra, Rohan | Here, we present results of a joint theoretical and experimental investigation of the role of structure and composition on the electronic and optical properties of BaTiS 3 and Sr 1+xTiS 3. | Session 11: Electronic Structure: Thermodynamic and Optical Properties |
| 143 | FIAP Business Meeting | FIAP Business Meeting | Session 12: FIAP Business Meeting | |
| 144 | Materials for Advanced Optical and Optoelectronic Fibers | Ballato, John | Materials for Advanced Optical and Optoelectronic Fibers | Session 13: Fellows of FIAP |
| 145 | Low Noise Radiofrequency Oscillators Based on Optical Microcavities | Matsko, Andrey | In this presentation we review recent achievements in the development of the RF photonic as well as optical oscillators based on nonlinear optical microcavities and cover several peculiar effects associated with the devices including frequency noise eating and time crystal generation. | Session 13: Fellows of FIAP |
| 146 | Hydrogen-related defects in Ga2O3 | Stavola, Michael | Hydrogen-related defects in Ga2O3 | Session 14: Gallium Oxide |
| 147 | Hydrogen trapped at perturbed Ga(1) vacancies in β-Ga2O3 | Fowler, W; Portoff, Amanda; Venzie, Andrew; Qin, Ying; Stavola, Michael | Subsequent work has yielded methods to obtain the dipole directions of such defects[3,4] and is revealing additional versions of defects with these two shifted configurations, but perturbed by lattice defects or atomic impurities, as reported in this meeting[5,6]. | Session 14: Gallium Oxide |
| 148 | Vibrational properties of oxygen-hydrogen centers in H+- and D+-implanted Ga2O3 | Portoff, Amanda; Venzie, Andrew; Qin, Ying; Stavola, Michael; Fowler, W; Pearton, Stephen | These defects include the dominant V Ga(1)-2H and V Ga(1)-2D centers studied previously [1] in addition to additional defects that can be converted into this structure by thermal annealing. | Session 14: Gallium Oxide |
| 149 | Acceptors in gallium oxide | Jesenovec, Jani; Ritter, Jacob; Pansegrau, Christopher; McCloy, John; McCluskey, Matthew | This presentation will discuss recent experimental studies on Czochralski-grown β-Ga 2O 3 single crystals doped with Mg and Zn acceptors. | Session 14: Gallium Oxide |
| 150 | Evidence for an Fe-H complex in Ga2O3 | Venzie, Andrew; Portoff, Amanda; Stavola, Michael; Fowler, W; Pearton, Stephen | One of the coupled O-D modes is allowed, and a second is forbidden, similar to the V Ga(1) -2D center studied previously [3]. | Session 14: Gallium Oxide |
| 151 | Acceptor-donor complexes in Ga2O3 | Chatratin, Intuon; Sabino, Fernando; Reunchan, Pakpoom; Janotti, Anderson | Using electronic structure calculations based on hybrid density functional theory, we investigate the interactions between acceptor and donor impurities in different possible configurations of acceptor-donor complexes considering all the inequivalent cation and anion sites of the β-Ga 2O 3 crystal structure. | Session 14: Gallium Oxide |
| 152 | Mid-gap defect levels of gallium oxide | Bhandari, Suman; Zvanut, Mary | Mid-gap defect levels of gallium oxide | Session 14: Gallium Oxide |
| 153 | Measurement of Ultrafast Dynamics of Gallium Vacancy Charge States in β-Ga2O3 | Singh, Arjan; Koksal, Okan; Tanen, Nicholas; McCandless, Jonathan; Jena, Debdeep; Xing, Huili; Peelaers, Hartwin; Rana, Farhan | We present results from ultrafast optical-pump supercontinuum-probe spectroscopy measurements on β-Ga 2O 3. | Session 14: Gallium Oxide |
| 154 | Computational Fermi level engineering and doping-type conversion of Ga2O3 via three-step processing | Goyal, Anuj; Zakutayev, Andriy; Stevanovic, Vladan; Lany, Stephan | We predict type conversion to a net p-type regime following O-rich annealing after growth under reducing conditions in the presence of H 2. | Session 14: Gallium Oxide |
| 155 | Incorporation of aluminum in (AlxGa1−x)2O3 alloys | Wang, Mengen; Mu, Sai; Van de Walle, Chris | In this work, we perform DFT calculations to explore the co-adsorption of Al, Ga, and O adatoms on the Ga 2O 3 (010) surface. | Session 14: Gallium Oxide |
| 156 | First-principles surface calculations for monoclinic Ga2O3 and Al2O3 and consequences for cracking of (AlxGa1-x)2O3 films | Mu, Sai; Wang, Mengen; Peelaers, Hartwin; Van de Walle, Chris | Our in-depth analysis of surface energies for both relaxed and unrelaxed surfaces provides important insights into the factors that determine the relative stability of different surfaces. | Session 14: Gallium Oxide |
| 157 | Fe3+ and Cr3+ Photoluminescence of Fe doped β-Ga2O3 | Remple, Cassi; Huso, Jesse; McCluskey, Matthew | Fe3+ and Cr3+ Photoluminescence of Fe doped β-Ga2O3 | Session 14: Gallium Oxide |
| 158 | Reversible control of electronic transport in ionic-gel gated β-Ga2O3 thin films | Rajapitamahuni, Anil; Kamath Manjeshwar, Anusha; Ranga, Praneeth; Krishnamoorthy, Sriram; Jalan, Bharat | In this talk, we present our observations on electron transport properties of ionic – gel gated BGO films, grown via metal-organic vapor-phase epitaxy. | Session 14: Gallium Oxide |
| 159 | Subterranean Visualization Through Multi-Sensor Fusion* | Morris, Joe | I will describe challenges associated with engineered geothermal systems (EGS) and hydraulic fracturing in shale formations. | Session 15: Imaging in Industry |
| 160 | The Role of Physics in Overhead Imaging | Edwards, Jonathan | For this technology, we discuss trade-offs for field-of-view and resolution and describe a number of engineering challenges addressed for a realizable system. | Session 15: Imaging in Industry |
| 161 | The Global Environmental Monitoring System (GEMS) CubeSat Microwave Radiometer Constellation for Weather and Climate Intelligence | Hurowitz, Michael | The clear need presented in this study has driven the laboratory-level development of large geostationary filled-and synthetic-aperture microwave sounders throughout the past period of more than four decades. | Session 15: Imaging in Industry |
| 162 | GeSn alloys with mid-IR direct band gaps | Menendez, Jose; Xu, Chi; Kouvetakis, John; Samarasingha Arachchige, Nuwanjula; Emminger, Carola; Zollner, Stefan | In this presentation I discuss recent optical characterization work on GeSn alloys with Sn concentrations as high as 36%. | Session 16: Infrared Sensing and Imaging |
| 163 | Depth Sensing Photonics for Mobile Handset, Automotive and other Consumer Applications | Collings, Brandon | Machine learning and predictive algorithms are increasingly providing new opportunities for technology to directly participate in our interaction with the physical world around us. | Session 16: Infrared Sensing and Imaging |
| 164 | Advances in III-V Semiconductor Unipolar Barrier Infrared Photodetectors | Ting, David; Soibel, Alexander; Khoshakhlagh, Arezou; Rafol, Sir; Keo, Sam; Fisher, Anita; Hill, Cory; Pepper, Brian; Gunapala, Sarath | Advances in III-V Semiconductor Unipolar Barrier Infrared Photodetectors | Session 16: Infrared Sensing and Imaging |
| 165 | Impact Ionization Engineering in Antimonide Heterostructures for Avalanche Photodiodes | Krishna, Sanjay | We will discuss the research challenges associated with the design, growth, fabrication and radiometric characterization of these APDs and the potential for the development of these critical APD components for LiDAR and active remote sensing and imaging systems. | Session 16: Infrared Sensing and Imaging |
| 166 | Minority carrier lifetime of strain-balanced InGaAs/InAsSb superlattices and associated detector performance gains in mid-wave infrared space applications | Webster, Preston | Minority carrier lifetime of strain-balanced InGaAs/InAsSb superlattices and associated detector performance gains in mid-wave infrared space applications | Session 16: Infrared Sensing and Imaging |
| 167 | Distinguished Lectureship Award on the Applications of Physics (2020): Academia to Entrepreneurship- Why not? | Venkatesan, Thirumalai | I will use examples from several of my students and colleagues’ startups and my own experience in running a company for over three decades amidst an academic career. | Session 17: Innovations from Industry: Including Pake Prize and Distinguished Lecture Talks |
| 168 | Distinguished Lectureship Award on the Applications of Physics (2019): Nuclear Science: from Fundamental Physics to Medical Technology | Keppel, Cynthia | Due to the characteristic Bragg peak associated with ion energy deposition, proton therapy provides the radiation oncologist an improved method of treatment localization within a patient, as compared with conventional radiation therapy using X-rays. | Session 17: Innovations from Industry: Including Pake Prize and Distinguished Lecture Talks |
| 169 | Rocket Science is Just Cool | Cheney, Janica | This presentation will provide a behind the scenes look at the engineering and physics of past and current space missions using solid rocket motors from the perspective of a rocket scientist. | Session 17: Innovations from Industry: Including Pake Prize and Distinguished Lecture Talks |
| 170 | From Innovation to the Marketplace: The Role of a Physicist | Davis, Scott | In this talk I will discuss what this transition looks like, with several real-world examples. | Session 17: Innovations from Industry: Including Pake Prize and Distinguished Lecture Talks |
| 171 | Anomalous Nernst and Seebeck coefficients in epitaxial thin film Co2MnAlxSi1-x | Yu, Han; Breidenbach, Aaron; Peria, William; Peterson, Timothy; McFadden, Anthony; Palmstrom, Chris; Crowell, Paul | As a result of the high sensitivity to the Weyl points near the Fermi level, we propose α xyA as a helpful tool to capture Weyl points that are too far from the Fermi level to produce significant effect in the anomalous Hall conductivity. | Session 18: Magnetic Materials and Properties |
| 172 | Epitaxial Cr: An Electrically Conductive Transverse-Spin-Current Reflector | Lim, Youngmin; Srivastava, Abhishek; Nepal, Bhuwan; Wu, Shuang; Smith, David; Jiang, Zijian; Klewe, Christoph; Shafer, Padraic; Li, Jie-Fang; Viehland, Dwight; Mewes, Claudia; Heremans, Jean; Mewes, Tim; Emori, Satoru | We report evidence of conductive epitaxial (epi-) Cr (resistivity ~ 30 µΩ*cm) acting as a reflector of transverse spin current. | Session 18: Magnetic Materials and Properties |
| 173 | Chemical substitution induced half-metallicity in CrMnSb(1-x)Px | O’Leary, Evan; Ramker, Adam; VanBrogen, Devon; Dahal, Bishnu; Montgomery, Eric; Poddar, Shashi; Kharel, Parashu; Stollenwerk, Andrew; Lukashev, Pavel | We report results of a computational work on the half-Heusler compound CrMnSb (1-x)P x. | Session 18: Magnetic Materials and Properties |
| 174 | Magnetic and Transport Properties of Mn1+xZn1-xSb (0 < x < 1) Md Rafique Un Nabi, Aaron Wegner, Rabindra Basnet, Krishna Pandey, Gokul Acharya, Jin Hu | Nabi, Md Rafique Un | Magnetic and Transport Properties of Mn1+xZn1-xSb (0 < x < 1) Md Rafique Un Nabi, Aaron Wegner, Rabindra Basnet, Krishna Pandey, Gokul Acharya, Jin Hu | Session 18: Magnetic Materials and Properties |
| 175 | Lattice Softening in Metastable bcc CoxMn100-x(001) Ferromagnetic Layers for a Strain-Free Magnetic Tunnel Junction | Elphick, Kelvin; Yoshida, Kenta; Roy, Tufan; Ichinose, Tomohiro; Kunimatsu, Kazuma; Tsuchiya, Tomoki; Tsujikawa, Masahito; Nagai, Yasuyoshi; Mizukami, Shigemi; Shirai, Masafumi; Hirohata, Atsufumi | We have developed an almost strain-free magnetic tunnel junction (MTJ) using metastable bcc Co xMn 100-x (CoMn) ferromagnetic films to reveal the reason. | Session 18: Magnetic Materials and Properties |
| 176 | Electronic structure and magnetic properties of Mn1+xPt1-xSb (0 ≤ x ≤ 0.5) | Maruf, Abdullah Al; Valloppilly, Shah; Shand, Paul; Lukashev, Pavel; Kharel, Parashu | In this presentation, we will discuss the results from our theoretical and experimental investigations including electronic band structure, structural and magnetic properties of Mn 1+xPt 1-xSb compounds. | Session 18: Magnetic Materials and Properties |
| 177 | Anisotropic change in the crystal structure across the valence state transition in EuPd2Si2 | Mardani, Masoud; Sharma, Shivani; Nelson, William; Baumbach, Ryan; Siegrist, Theo | Anisotropic change in the crystal structure across the valence state transition in EuPd2Si2 | Session 18: Magnetic Materials and Properties |
| 178 | Voltage-induced ferromagnetism in diamagnetic FeS2 | Walter, Jeff; Voigt, Bryan; Day-Roberts, Ezra; Heltemes, Kei; Fernandes, Rafael; Birol, Turan; Leighton, Chris | Here, we provide proof-of-principle that ferromagnetism can be voltage-induced even from a diamagnetic, i.e., zero-spin state, suggesting that useful magnetic phases could be electrically-induced in “non-magnetic” materials [1]. | Session 18: Magnetic Materials and Properties |
| 179 | Evidence of multiple magnetic phases in the Van der Walls ferromagnet CrI3 | Meseguer-Sánchez, Jaume; Guguchia, Zurab; Navarro-Moratalla, Efren; Santos, Elton | Combining muon spin rotation (μSR) and superconducting quantum interference device (SQUID) measurements, we reveal the presence of multiple magnetic phase transitions of different nature, suggesting that the ferromagnetic transition transcends the classical concept of long-range order. | Session 18: Magnetic Materials and Properties |
| 180 | Voltage Gated Toggling of Exchange Bias in GdCo/NiO Thin Film Heterostructures | Hasan, Muhammad Usama; Zehner, Jonas; Huang, Mantao; Leistner, Karin; Beach, Geoffrey | Here we show that, when a GdCo/NiO bilayer with out of plane magnetization is loaded/unloaded with hydrogen, the expected switching of the dominant sublattice in GdCo is accompanied by a flipping of the effective EB direction as well. | Session 18: Magnetic Materials and Properties |
| 181 | Dynamic Phase Transitions in Ferromagnetic Thin Films with Different Curie Temperatures | Marin Ramirez, Juan; Campillo, Gloria; Osorio, Jaime; Arnache, Oscar; Berger, Andreas | Therefore, here we study experimentally the dynamic magnetic behavior for a suitable series of samples that have different T/T c ratios, to explore their role in the vicinity of the DPT by means of a magneto-optical Kerr effect based detection scheme. | Session 18: Magnetic Materials and Properties |
| 182 | Novel Mn-based Magnetic Material with Strong Spin-Orbit Coupling | Dissanayaka Mudiyanselage, Ranuri; Gui, Xin; Kong, Tai; Xie, Weiwei | Novel Mn-based Magnetic Material with Strong Spin-Orbit Coupling | Session 18: Magnetic Materials and Properties |
| 183 | Room-Temperature Magnetic Bistability in Epitaxial Fe0.52Rh0.48/MgO(001) Film Grown by Molecular Beam Epitaxy and Its Application in Rewritable Magnetic Patterning | Tang, Yongjian; Mei, Antonio; Gray, Isaiah; Fuchs, Gregory; Schlom, Darrell; Ralph, Daniel | By utilizing molecular beam epitaxy as a tool to controllably tune the chemical composition of Fe 1-xRh x thin films, we have systematically investigated the magnetic transition as a function of x. Rhodium deficient films have a lower transition temperature T c compared to stoichiometric film. | Session 18: Magnetic Materials and Properties |
| 184 | Evidence of phase separation in a (La,Pr,Ca)MnO3 thin film by ferromagnetic resonance. | Carranza-Celis, Diego; Skoropata, Elizabeth; Biswas, Amlan; Fitzsimmons, Michael; Schuller, Ivan; Ramirez, Juan | Here we report ferromagnetic resonance (FMR) and transport measurements on a LPCMO thin film across the FPS to SPS transition. | Session 18: Magnetic Materials and Properties |
| 185 | Non-collinear Effects and Substrate-mediated Magnetic Interactions in Mn trimers on the GaN (000-1) Surface | Hunt, Diego; Barral, Maria Andrea; Ferrari, Valeria; Smith, Arthur | We estimate the magnetic anisotropy energy (MAE), and we find that in the case of Mn dimers, the exchange magnetic coupling is the dominant interaction, and that the ground state has the Mn spins in-plane with the GaN(000-1) substrate. | Session 18: Magnetic Materials and Properties |
| 186 | Robust edge states in magnetic-texture based metamaterials | Yan, Peng | Through analytical and numerical calculations, we predict (higher-order) topological insulator states in magnetic-texture (e.g., skyrmion and vortex) based metamaterials, which manifests robust edge and/or corner states at device boundaries and is characterized by the quantized Chern number and the Z N Berry phase. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 187 | Fingerprints of Universal Spin-Stiffness Jump in Two-Dimensional Ferromagnets | Troncoso, Roberto | Here we demonstrate that the spatial correlations of injected spin-currents into a pair of metallic leads can be used to measure the predicted universal jump of 2/π in the ferromagnet spin-stiffness. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 188 | Van der Waals interactions in molecules and solids from quantum Monte Carlo | Heinonen, Olle; Shin, Hyeondeok; Benali, Anouar | Van der Waals interactions in molecules and solids from quantum Monte Carlo | Session 19: Magnetism Quantum Theory and Computation Studies |
| 189 | Unusual Friedel and RKKY responses in 3D quadratic band-touching Luttinger semimetals | J. Godbout, Louis; Tchoumakov, Serguei; Witczak-Krempa, William | We study the response of Luttinger semimetals, such as alpha-Sn, HgSe, HgTe, YPtBi and Pr 2Ir 2O 7, to charge and magnetic impurities. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 190 | Analogues of light and gravity in the collective excitations of quantum magnets | Chojnacki, Leilee; Pohle, Rico; Shannon, Nicholas | Through explicit simulation, we show how the quadrupole waves of a spin-1 magnet can mimic the gravitational radiation observed from binary mergers of black holes. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 191 | Detection of Kardar-Parisi-Zhang Hydrodynamics in a quantum Heisenberg spin-half chain | Sherman, Nicholas; Scheie, Allen; Dupont, Maxime; Nagler, Stephen; Stone, Matthew; Granroth, Garrett; Moore, Joel; Tennant, David | In this work, we study the dynamical structure factor using a tensor network approach, and show signatures of KPZ survive at finite temperatures. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 192 | First Principles Studies of Fe-intercalated $\mathrm{NbS_2}$ | Weber, Sophie; Neaton, Jeffrey | To shed light on these findings, we examine the magnetic properties and transport of $\mathrm{Fe_{1/3}NbS_2}$ using density functional theory calculations. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 193 | Domain wall displacement in multisegmented nanowires | Dolocan, Voicu | In this presentation, we show that using a multisegmented nanowire, the precise manipulation of transverse DWs can be achieved depending on the segments length and materials parameters. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 194 | A Superatomic Dimer with Massive Spin Magnetic and Internal Electric Dipole Moments | Bista, Dinesh; Sengupta, Turbasu; Reber, Arthur; Khanna, Shiv | In this work, the electronic and magnetic properties of the Fe 6S 8 cluster attached with ligands and the fused superatomic dimer are investigated using the first-principles density functional theory. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 195 | Quantum spin Hall effect in two-dimensional metals without spin-orbit coupling | Klemm, Richard; Zhao, Aiying; Gu, Qiang; Bullard, Thomas; Haugan, Timothy | We propose an experiment to measure the QSHE of an electron or hole in a two-dimensional (2D) metal without SOC. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 196 | Heterogeneous Chaos in Few-body Dynamics | Moharrami Allafi, Negin; Oganesyan, Vadim | We study the time-evolution of classical spin-dimer system and nature of the transition from non-chaotic into the chaotic region of phase space. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 197 | Magnetic oxygen in transition metal oxides: A case study of Ba2CoO4 | Hou, Lin | We find that the magnetic moment is not only localized on Co atoms, as assumed in all conventional data analysis, but also distributed on its tetrahedrally-coordinated O atoms, making CoO4 the magnetic building block instead of Co alone. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 198 | Exact solution of the linearized Boltzmann equation for the low-temperature resistivity in metallic ferromagnets. | Amarel, James; Belitz, Dietrich; Kirkpatrick, Theodore | We present a rigorous proof of Bloch’s T^5 law due to electron-phonon scattering [2] and give the corresponding result for scattering by magnons [3]; the prefactor of the exponential is asymptotically independent of the temperature. | Session 19: Magnetism Quantum Theory and Computation Studies |
| 199 | Large and local magnetoresistance in a state-of-the-art perpendicular magnetic medium | Williamson, Morgan; Wang, Cheng; Huang, Pin-Wei; Ju, Ganping; Tsoi, Maxim | Large and local magnetoresistance in a state-of-the-art perpendicular magnetic medium | Session 20: Magneto-Transports and Magnetic Interfaces |
| 200 | Longitudinal and transverse unidirectional magnetoresistances driven by interfacial spin-orbital scattering | Mehraeen, M.; Shen, Pengtao; Zhang, Shulei | The recent observation of the unidirectional spin Hall magnetoresistance (USMR) — a longitudinal magnetoresistance that changes sign with the reversal of either the in-plane electric field or the magnetization — in ferromagnetic and heavy metal bilayers has led to increased interest in the study of nonlinear magnetotransport effects. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 201 | Linear and Nonlinear Two-Terminal Spin-Valve Effect from Chirality-Induced Spin Selectivity | Liu, Tianhan; Wang, Xiaolei; Wang, Hailong; Lochner, Eric; Schlottmann, Pedro; Von Molnar, Stephan; Zhao, Jianhua; Xiong, Peng | Here, we report definitive observation of CISS-induced magnetoconductance in vertical heterojunctions of (Ga,Mn)As/AHPA-L molecules/Au, directly verifying spin filtering by the AHPA-L molecules via spin detection by the (Ga,Mn)As. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 202 | Electrical Switching of Antiferromagnetic FexNbS2 driven by the collective dynamics of a coexisting spin glass | Maniv, Eran; Nair, Nityan; Haley, Shannon; Doyle, Spencer; John, Caolan; Cabrini, Stefano; Maniv, Ariel; Ramakrishna, Sanath; Tang, Yun-Long; Ercius, Peter; Ramesh, Ramamoorthy; Tserkovnyak, Yaroslav; Reyes, Arneil; Analytis, James | In this talk, I will show that the coexistence of spin glass and antiferromagnetic order allows a novel mechanism to facilitate the switching of the intercalated transition metal dichalcogenide Fe 1/3±δNbS 2, which is rooted in the electrically stimulated collective winding of the spin glass. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 203 | Evidence for ideal memristive functionality in ferromagnet/antiferromagnet nanostructures revealed by spin Hall effect-driven harmonic measurements | Ivanov, Sergei; Urazhdin, Sergei | We study thin-film Pt/Permalloy(Py)/CoO nanostrips to demonstrate the possibility to drive viscous magnetization dynamics of Permalloy by the current-driven spin Hall effect in Pt and the Oersted field and detect it using the anisotropic magnetoresistance. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 204 | Observation of magnetoelastic Gilbert damping in highly magnetostrictive Fe0.7Ga0.3 thin films | Peria, William; Yu, Heshan; Lee, Seunghun; Takeuchi, Ichiro; Crowell, Paul | Here we report a large magnetoelastic contribution to the Gilbert damping in highly magnetostrictive Fe 0.7Ga 0.3 thin films, which grows to as large as 6 times greater than the intrinsic damping at 50 K. To show this, we present the orientational and temperature dependence of the Gilbert damping. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 205 | Chirality induced spin selectivity through time-reversal symmetric helical molecular junctions | Utsumi, Yasuhiro; Entin-Wohlman, Ora; Aharony, Amnon | Chirality induced spin selectivity through time-reversal symmetric helical molecular junctions | Session 20: Magneto-Transports and Magnetic Interfaces |
| 206 | Non-charge-carrier-mediated spin-transport in an organic semiconductor | Popli, Henna; Wang, Jingying; Liu, Xiaojie; Lafalce, Evan; Tennahewa, Taniya; Malissa, Hans; Vardeny, Valy; Boehme, Christoph | We report experiments scrutinizing existing theoretical pictures of spin-transport in organic thin films, based on the idea that this is due to the same mechanisms as charge transport [1, 2], as it is the case for many inorganic materials. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 207 | Substrate Effects on Spin Lattice Relaxation in the Molecular Qubit CuPc | Mullin, Kathleen; Rondinelli, James | To address this challenge, we performed electronic structure calculations on a substrate-supported molecular magnet system, comprising copper(II) phthalocyanine(CuPc) on graphene, and examined changes in relaxation times using a spin lifetime proxy. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 208 | Temperature dependence of shot noise in double barrier magnetic tunnel junctions | Niu, Jiasen; Liu, Liang; Feng, Jiafeng; Han, Xiufeng; Coey, J M; Zhang, Xiaoguang; Wei, Jian | We report measurement of shot noise in CoFeB/MgO/CoFeB/MgO/CoFeB double barrier magnetic tunnel junctions, which shows a strong temperature dependence. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 209 | ac Hanle effect in spin valves | Bazaliy, Yaroslaw | We study the combination of the two effects: an ac Hanle effect in spin valves and find that it results in new types of signatures in the non-local voltage dependencies. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 210 | Magnetic and Electron-Transport Properties of Co2Si Nanomagnets | Pahari, Rabindra; Balasubramanian, Balamurugan; George, Tom; Manchanda, Priyanka; Ullah, Ahsan; Skomski, Ralph; Sellmyer, David | In this work, we investigate ferromagnetism and magnetotransport in thin films of Co2Si nanoclusters experimentally and theoretically. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 211 | Current-induced unidirectional magnetoresistance in Pt/FeRh bilayers | Shim, Julie; Saglam, Hilal; Gibbons, Jonathan; Oh, Junseok; Li, Yi; Zhang, Wei; Zhang, Shulei; Hoffmann, Axel; Sklenar, Joseph; Mason, Nadya | In this work, we report a UMR effect in the antiferromagnetic phase of a Pt/FeRh bilayer. | Session 20: Magneto-Transports and Magnetic Interfaces |
| 212 | Bi-reflection of spin waves by magnon-phonon hybridization | Hioki, Tomosato; Hashimoto, Yusuke; Saitoh, Eiji | In this talk, we report the result of time-resolved magneto-optical microscopy of the reflection dynamics of the hybridized waves. | Session 21: Magnon Spin Current and Transport |
| 213 | Unitary magnon-mediated operations for quantum computing | Trevillian, Cody; Tyberkevych, Vasyl | Here, we show that dynamic tuning of magnon frequencies at timescales comparable to the magnon-photon energy exchange time allows one to achieve qualitatively new functionalities of such hybrid devices. | Session 21: Magnon Spin Current and Transport |
| 214 | Magnon supercurrent transport and interference effects | Hillebrands, Burkard | In our experiments, we have found a fingerprint of the supercurrent efflux of condensed magnons subjected to a phase gradient imposed by a local heating of the magnetic sample. | Session 21: Magnon Spin Current and Transport |
| 215 | A simple model for the description of Bose-Einstein condensation of magnons at room temperature | Artemchuk, Petro; Slavin, Andrei; Tyberkevych, Vasyl | We developed such an approximate model, and demonstrated that mBEC can be described as a gas of weakly-interacting bosonic quasi-particles with anisotropic effective mass in an infinite potential well formed by the ferromagnetic film. | Session 21: Magnon Spin Current and Transport |
| 216 | Diffusive Magnon Spin Nernst Effect in Antiferromagnets | Zhang, Hantao; Cheng, Ran | To properly accommodate these complexities, we formulate a diffusive theory of the SNE of antiferromagnetic magnons under a realistic device geometry. | Session 21: Magnon Spin Current and Transport |
| 217 | Spin transport in an electrically driven magnon gas near Bose-Einstein condensation: Hartree-Fock-Keldysh theory | Takei, So | The Keldysh path integral formalism is used to model the magnon gas driven into a nonequilibrium steady state by mismatched bath temperatures and/or electrical injection, and we analyze the magnon system in the normal state, but close to the instability to Bose-Einstein condensation, within the self-consistent Hartree-Fock approximation. | Session 21: Magnon Spin Current and Transport |
| 218 | Anisotropic magnon spin diffusion length in ultra-thin spinel ferrite thin films | Li, Ruofan; Li, Peng; Yi, Di; Suzuki, Yuri; Ralph, Daniel; nan, tianxiang | Here we demonstrate anisotropic magnon spin transport in coherently-strained ultra-thin epitaxial films of magnesium aluminum ferrite (MgAl 0.5Fe 1.5O 4, MAFO) with low Gilbert damping and a thickness of 6 nm. | Session 21: Magnon Spin Current and Transport |
| 219 | Unconventional Singularity in Anti-Parity-Time Symmetric Cavity Magnonics | Yang, Ying; Wang, Yi-Pu; Rao, J. W.; Gui, Y. S.; Yao, B. M.; Lu, W.; Hu, Can-Ming | By engineering an anti-parity-time (anti-PT) symmetric cavity magnonics system with precise eigenspace controllability, we observe two different singularities in the same system. | Session 21: Magnon Spin Current and Transport |
| 220 | Magnon-driven chiral charge and spin pumping and electron-magnon scattering from time-dependent quantum transport combined with classical atomistic spin dynamics | Suresh, Abhin; BAJPAI, UTKARSH; Nikolic, Branislav | In this study, we employ recently developed [M. D. Petrovic et. | Session 21: Magnon Spin Current and Transport |
| 221 | Mesoscopic Material Properties from Magnon Scattering in Thin Films | Esterlis, Ilya; Fechisin, Christopher; Zhou, Tony; Sels, Dries; Fernandez, Daniel; Demler, Eugene; Yacoby, Amir | Toward this end, we study the scattering of spin waves in magnetic thin films for application to our tabletop magnon scattering platform ( 1). | Session 21: Magnon Spin Current and Transport |
| 222 | Intrinsic Magnon Nernst Effect in Pyrochlore Iridate Thin Films | Ma, Bowen; Fiete, Gregory | We theoretically study the intrinsic magnon Nernst effect in pyrochlore iridate trilayer thin films grown along the [111] direction using a strong coupling approach. | Session 21: Magnon Spin Current and Transport |
| 223 | Magnon-Mediated Spin Transport in TmIG/Au/TmIG Valves with Perpendicular Magnetic Anisotropy | Da Silva Vilela, Gilvania; Santos, Eduardo; Abrao, Elias; Rezende, Sergio; Azevedo, Antonio; Moodera, Jagadeesh | In this work, we investigate the spin dynamics and the transport of thermally driven spin currents in valves composed of two layers of TmIG (Tm 3Fe 5O 12) thin films with PMA separated by Au. | Session 21: Magnon Spin Current and Transport |
| 224 | Birefringence-like spin transport via linearly polarized antiferromagnetic magnons | Han, Jiahao; Zhang, Pengxiang; Bi, Zhen; Fan, Yabin; Safi, Taqiyyah; Xiang, Junxiang; Finley, Joseph; Fu, Liang; Cheng, Ran; Liu, Luqiao | In this work, we experimentally demonstrate that an easy-plane insulating AFM, α-Fe 2O 3 thin film, can conduct efficient spin transmission over micrometer distance. | Session 21: Magnon Spin Current and Transport |
| 225 | Realization of BaZrS3 chalcogenide perovskite thin films for optoelectronics | Wei, Xiucheng; Hui, Haolei; Han, Mengjiao; Perera, Samanthe; Lin, Junhao; Sun, Yi-Yang; Zhang, Shengbai; Zeng, Hao | Here we report the fabrication of BaZrS 3 thin films, by sulfurization of oxide films deposited by pulsed laser deposition (PLD). | Session 22: Materials Synthesis |
| 226 | Antisite Defects Formation in LaMO3 (M=Mn, Fe, Ni, and Co) predicted by Fixed-node Diffusion Monte Carlo Method | Ichibha, Tom; Saritas, Kayahan; Krogel, Jaron; Reboredo, Fernando | In this work, we show theoretically that a transition metal atom at the La site can be formed under certain growth conditions. | Session 22: Materials Synthesis |
| 227 | Synthesis and Structural, Crystallographic, Electronic, Chemical and Optical characterizations of Alpha-Diisopropylammonium Bromide (α-DIPAB) Thin Films | Alsaad, Ahmad; M. Al-Bataineh, Qais; Bani-Salame, Areen; A. Ahmad, A.; Albiss, B. A.; Telfah, Ahmad; Sabirianov, Renat | We report on the synthesis and characterization of as-grown Alpha-Diisopropylammonium Bromide (α-DIPAB) thin films. | Session 22: Materials Synthesis |
| 228 | Characterizing Surface Energetics of Wafer Bonding of LiTaO3 to Si and SiO2 via Three Liquid Contact Angle Analysis (3LCAA) and Gibbs Free Energy | Prakash, Shefali; Sahal, Mohammed; Elison, Abbie; Swaminathan, Srivatsan; Rane, Riley; Baker, Brian; Culbertson, Robert; Herbots, Nicole | This work investigates direct wafer bonding, or Nano-Bonding™ (NB), via Surface Energy Engineering (SEE) at RT to bond LiTaO 3 to Si and SiO 2, because the thermal expansion of LiTaO 3(110), is mismatched to Si by a factor 8 to α-quartz SiO 2 by 25. | Session 22: Materials Synthesis |
| 229 | Structural phase diagram of doped HfO2 bulk single crystal | Xu, Xianghan; Huang, Fei-Ting; Qi, Yubo; Singh, Sobhit; Rabe, Karin; Obeysekera, Dimuthu; Yang, Junjie; Chu, M.-W.; Cheong, Sang-Wook | Here, we report that the high-quality HfO 2 single crystals have been successfully grown by a state-of-the-art laser-diode-heated floating zone (LDFZ) technique. | Session 22: Materials Synthesis |
| 230 | Study of Electrical and Optical Properties of Al-doped ZnO Nanoparticles | Karmakar, Bishwajite; Shams, Rifat; Islam, Sajal; Taufique, M.F.N.; Haque, Ariful; Ghosh, Kartik | In this work, opto-electronic properties are tuned by doping Zn 2+ with a trivalent Al atom in ZnO. | Session 22: Materials Synthesis |
| 231 | Molybdenum Disulfide Film Growth by Chemical Vapor Deposition with Facial Treated Substrates | Jiang, Yan; Philipose, Usha | We demonstrate atmospheric pressure CVD growth of large domains of molybdenum disulfide (MoS 2) monolayers and multilayers in the presence of an alkali salt like sodium chloride (NaCl) that serves as a seeding promoter. | Session 22: Materials Synthesis |
| 232 | Polymorphism and Cation Disorder in MgSnN2 | Greenaway, Annie; Loutris, Amanda; Schnepf, Rekha; Heinselman, Karen; Mis, Allison; Melamed, Celeste; Woods-Robinson, Rachel; Adamczyk, Jesse; Tellekamp, Marshall; Sherbondy, Rachel; Bardgett, Dylan; Bauers, Sage; Zakutayev, Andriy; Christensen, Steven; Lany, Stephan; Tamboli, Adele | Here, we investigate MgSnN 2, a II-IV-N 2 with two accessible polymorphs and cation disorder. | Session 22: Materials Synthesis |
| 233 | Growth and exploration of new p-block rich intermetallics | Besara, Tiglet; Krishnan, Sudha; Longworth, Sarah; Sarmiento, Julio | We focus on using p-block elements as a flux for growth of single crystals and have successfully synthesized materials such as SmMnBi 2, Sm 2Mn 13Bi 5, Co xMn 1-xGa 3, and Cu 7Nb 3Zn 10. | Session 22: Materials Synthesis |
| 234 | Optical Spectroscopic and Gain Properties of II-VI Heterostructures for Semiconductor Disk Laser Application | jubair, ahamed; Zhao, Kuaile; Kartazayeu, Vladimir; Tamargo, Maria; Gayen, Swapan | We report on the synthesis, structural properties, as well as optical spectroscopic and gain characteristics of ZnCdSe/ZnCdMgSe multiple quantum well (MQW) structures grown lattice matched on InP substrates using molecular beam epitaxy (MBE) for potential SDL operation in the green-yellow spectral range. | Session 22: Materials Synthesis |
| 235 | Atomistic Mechanism of MoS2 Oxidation Induced by Reactive Superoxide and Ozone Treatment: A First-principles Study | Noh, Min Jong; Khan, Muhammad Ejaz; Kim, Yong-Hoon | We propose plausible pathways for SO 2 formation wherein O 2 – and O 3 readily form SO 2, however, O 2 has a high adsorption barrier of 1.96 eV on MoS 2 surface. | Session 22: Materials Synthesis |
| 236 | Synthesis of Few-Layer Thick Molybdenum Disulfide (MoS2) Films and Crystals via Low Pressure Chemical Vapor Deposition (LPCVD) | Choi, Daniel; Lock, Evgeniya | In this report, we present low pressure chemical vapor deposition (LPCVD) approach as well as material characterizations of MoS 2 films and crystals. | Session 22: Materials Synthesis |
| 237 | Effect of Scandium Nitride Film Orientation on Growth and Electrical Properties | Reed, Amber; Cetnar, John; Back, Tyson; Smith, Hadley; Biegler, Zach; Look, David | In this work, we investigate the effect of ScN orientation on film growth, composition and electrical properties. | Session 22: Materials Synthesis |
| 238 | Reduced temperature preparation of atomically clean Si surfaces to augment CMOS with atomic precision devices | Anderson, Evan; Pena, Luis; Mudrick, John; Campbell, DeAnna; Katzenmeyer, Aaron; Tracy, Lisa; Lu, Tzu-Ming; Leenheer, Andrew; Ivie, Jeffrey; Schmucker, Scott; Scrymgeour, David; Misra, Shashank | Here we demonstrate a suitably clean Si surface for APAM, prepared below 600°C, that is compatible with the middle of a CMOS process flow. | Session 22: Materials Synthesis |
| 239 | Properties of Zinc-based Magnetic Nanoparticle Prepared by Co-Precipitation Technique | Ibiyemi, Abideen; Yusuf, Gbadebo | This research presents the structural and viscoelastic analysis of Zinc-based ferrite magneto rheology fluid (MR) (ZnFe 2O 4) nanoparticle synthesized by chemical co-precipitation technique. | Session 22: Materials Synthesis |
| 240 | Data Science in Leadership Consulting and People Analytics | Anzelc, Meghan | In this session, I will provide an overview of my own career path from particle physics PhD to data science leader, sharing how skills from a physics degree translate to data science careers. | Session 23: New Ways of Seeing with Data Science |
| 241 | Machine Learning enables a new view in the Agriculture industry | Hobbs, Jennifer | We compare two-stage, single-stage, and density-estimation approaches for speed and accuracy. | Session 23: New Ways of Seeing with Data Science |
| 242 | Building a safe and professional community at LinkedIn using Data Science | Wu, Pan | In this talk, we would like to provide a taste of the Data Science work here at LinkedIn’s Trust team: experimentations are leveraged to understand product changing impacts to optimize member trust experience, advanced analytics are used to identify bad actors behavior patterns for better prevention, and prevalence studies are carried out to understand the gap in our current detection mechanism. | Session 23: New Ways of Seeing with Data Science |
| 243 | Fluctuations, control and suppression of viral outbreaks | Schwartz, Ira; hindes, jason; Kaufman, James; Bianco, Simone; Shaw, Leah | We develop an analytical theory for COVID-19-like diseases propagating through networks using an SEIR-like model, showing how characteristic closure periods emerge that minimize the total disease outbreak, and increase predictably with the reproductive number and incubation periods of a disease as long as both are within predictable limits. | Session 23: New Ways of Seeing with Data Science |
| 244 | Applying Deep Learning to Natural Language and Conversational AI | Zheng, Huaixiu | In this talk, I will talk about several case studies where successful applied research of deep learning in the problem space of natural language and conversational AI brings enormous real-world impacts by transforming the way people interact with natural language interfaces. | Session 23: New Ways of Seeing with Data Science |
| 245 | Point Defect Management in III-Nitrides: A Systematic Approach | Collazo, Ramon; Reddy, Pramod; Washiyama, Shun; Kirste, Ronny; Mita, Seiji; Irving, Douglas; Sitar, Zlatko | Here, we demonstrate a systematic approach to point defect control by employing the defect formation energy as a tool through (a) chemical potential control and (b) Fermi level control. | Session 24: Nitride Semiconductors |
| 246 | Plasma frequency in doped highly mismatched alloys | Allami, Hassan; Krich, Jacob | We solve our model semi-analytically and show that interband effects of the upper split band bound the plasma frequency to be smaller than an effective band gap. | Session 24: Nitride Semiconductors |
| 247 | Influence of Surface Treatments on the Structure of GaN Layers | He, Jiaheng; Cheng, GuanJie; Zhang, Zhirong; Chen, Maggie; Frisone, Sam; Zimmerman, Alexandra; Naab, Fabian; Wang, Sizhen; Li, Bingjun; Han, Jung; Goldman, Rachel | To understand processing-structure-property relationships relevant to vertical GaN devices, we examine the influence of dry etching and metal-organic (MO) precursor treatment on the structure and properties of GaN substrates and epitaxial GaN layers. | Session 24: Nitride Semiconductors |
| 248 | Evidence of new point defects optical features in Zr-implanted polycrystalline AlN films | Aghdaei, Azin; Pandiyan, Rajesh; Ilahi, Bouraoui; Chicoine, Martin; El Gowini, Mohamed; Schiettekatte, François; G. Frechette, Luc; Morris, Denis | In this work, we have investigated the impact of thermal annealing gaseous atmosphere of argon, nitrogen, and forming gas on the structural and optical properties of thin polycrystalline AlN films subjected to high-energy implantation of zirconium ions. | Session 24: Nitride Semiconductors |
| 249 | Color tunability of light-emitting diodes based on Eu-doped GaN active layers | Austin, Hayley; Ortiz, Kelsey; Mitchell, Brandon; Tatebayashi, Jun; Fujiwara, Yasufumi; Dierolf, Volkmar R | We present a comparison of the predicted and experimentally observed behaviors and discuss extensions of the model and possibilities to extend the color coverages of the single-pixel LED. | Session 24: Nitride Semiconductors |
| 250 | Alloy-Limited Electron Mobility of AlGaN Evaluated by Unfolding the DFT Band Structure | Pant, Nick; Deng, Zihao; Kioupakis, Emmanouil | We introduce a method to calculate the quantum scattering lifetime, which appears as an energy broadening in the band structure, by unfolding the band structure from the supercell basis to the primitive-cell basis. | Session 24: Nitride Semiconductors |
| 251 | Semiconducting character of LaN: magnitude of the band gap, and origin of the electrical conductivity | Deng, Zihao; Kioupakis, Emmanouil | We investigate the electronic and defect properties of LaN with hybrid DFT calculations. | Session 24: Nitride Semiconductors |
| 252 | Defect engineering on demand in GaAsN nanowires by post-growth hydrogen irradiation | Gächter, Nadine; Blundo, Elena; Yukimune, Mitsuki; Zardo, Ilaria; Ishikawa, Fumitaro; Polimeni, Antonio; De Luca, Marta | Here, we report post-growth band-structure engineering in nanowires by mere exposition to low-energy ionized hydrogen gas. | Session 24: Nitride Semiconductors |
| 253 | Predictions for Yellow Luminescence In Cubic GaN Under Hydrostatic Pressure | Edwards, Arthur; Schultz, Peter; Dobzynski, Richard; Van Ginhoven, Renee; Pineda, Andrew | We report defect studies in cubic GaN using the local moment counter charge technique (LMCC) as a function of pressure, enabling experimental predictions for the behavior of the yellow luminescence. | Session 24: Nitride Semiconductors |
| 254 | Weak localization in compositionally graded AlxGa1-xN | Shafe, Abdullah; Al-Tawhid, Athby; Bagheri, Pegah; Reddy, Pramod; Mita, Seiji; Moody, Baxter; Collazo, Ramon; Sitar, Zlatko; Ahadi, Kaveh | We report on the observation of weak localization in the compositionally graded Al xGa 1-xN. | Session 24: Nitride Semiconductors |
| 255 | Doping-limitations of cubic boron nitride: effect of unintentional defects on shallow doping | Joshi, Tamanna; Kumar, Pankaj; Poudyal, Bipul; Russell, Sean; Dev, Pratibha | In this theoretical work, we study the reasons for doping-limitations, an acute issue in realizing cBN-based electronics. | Session 24: Nitride Semiconductors |
| 256 | Canted Spin Texture and Quantum Spin Hall Effect in WTe2 | Garcia Aguilar, José; Vila, Marc; Hsu, Chuang-Han; Waintal, Xavier; Pereira, Vitor; Roche, Stephan | We report an unconventional quantum spin Hall phase in the monolayer Td-WTe 2, which exhibits hitherto unknown features in other topological materials. | Session 25: Novel Topological and Magnetic Materials |
| 257 | Phononic control of magnetism in a topological insulator | Padmanabhan, Hari; Koocher, Nathan; Kim, Peter; Poore, Maxwell; Stoica, Vladimir; Puggioni, Danilo; Wang, Huaiyu; Lee, Seng Huat; Wetherington, Maxwell; Schaller, Richard; Averitt, Richard; Rondinelli, James; Gopalan, Venkatraman | In this work, we demonstrate for the first time, the optical control of magnetism in a topological insulator. | Session 25: Novel Topological and Magnetic Materials |
| 258 | Anomalous Hall effect in ferromagnetic semiconductors: the case of Ga1-xMnxAs1-yPy | Liu, Xinyu; Riney, Logan; Wang, Jiashu; Dong, Sining; Guo, Lei; Zheng, Ren-Kui; Li, Xiang; Bac, Seul-Ki; Kossut, Jacek; Dobrowolska, Malgorzata; Furdyna, J; Hsu, Yi-Ting; Assaf, Badih | By applying a modified Brillouin-Weiss model for the magnetization, we decompose the AHE into an “extrinsic” contribution (due to scattering) and a dominating “intrinsic” contribution (due to the Berry curvature). | Session 25: Novel Topological and Magnetic Materials |
| 259 | Orbital hybridization in the spin-glass state of Mn-doped ZnTe | Alcantara, Alexandria; Barrett, Steven; Matev, Dina; Miotkowski, Ireneusz; Ramdas, Anant; Pekarek, Thomas; Haraldsen, Jason | From our analysis of the electronic structure evolution with doping and onsite potential, we confirm the semiconducting state of the material as well as show that Te-Mn pd-orbital hybridization is activated with the Mn doping above 25%, which is around the doping when the spin-glass transition begins to rise, which could be a precursor to the spin-glass state. | Session 25: Novel Topological and Magnetic Materials |
| 260 | Phonon vibration modes of layered MnBi2nTe3n+1 (n=1,2,3,4) topological heterostructures | Cho, Yujin; Kang, Jin Ho; Liang, Liangbo; Puretzky, Alexander; Kong, Xiangru; Ghosh, Subhajit; Kargar, Fariborz; Hu, Chaowei; Ni, Ni; Balandin, Alexander; Geohegan, David; Wong, Chee Wei | In this talk, we present the phonon modes of bulk MnBi 2nTe 3n+1 (n=1,2,3,4) at various temperatures and polarization configurations, using optical Raman spectroscopy. | Session 25: Novel Topological and Magnetic Materials |
| 261 | Prediction of momentum dependent spin splitting in low-Z collinear and noncollinear antiferromagnets even without spin-orbit coupling | Yuan, Linding; Wang, Zhi; Luo, Jun-Wei; Rashba, Emmanuel; zunger, alex | We identify the magnetic symmetry conditions that produce AFM prototypes having spin splitting even without external magnetic field and even when the SOC is set to zero. | Session 25: Novel Topological and Magnetic Materials |
| 262 | Experimental Signatures of Ground State and Photoexcited Edge Magnetism in Phosphorene Nanoribbons | Ashoka, Arjun; Howard, Christopher; Rao, Akshay; Pandya, Raj | Using polarisation sensitive pump-probe spectroscopy with sub-1T magnetic fields we demonstrate signatures of room temperature ground state ferromagnetism in these materials via a magnetic field-induced anisotropy. | Session 25: Novel Topological and Magnetic Materials |
| 263 | Spin Texture Probed with Magnetoresistance in Ferromagnetic EuO1-x Thin Films | Shrestha, Narendra; Tang, Jinke | At present significant research effort is being placed in the study of topological particle-like magnetic skyrmions for electronic and spintronic applications. | Session 25: Novel Topological and Magnetic Materials |
| 264 | Dielectric and magnetic properties | USMAN, AYESHA; Kayani, Zohra | Dielectric and magnetic properties | Session 25: Novel Topological and Magnetic Materials |
| 265 | Computational investigation of the spin-1 state of Ti-doped CdSe | Dimuna, John; Boyett, Tucker; Miotkowski, Ireneusz; Ramdas, Anant; Pekarek, Thomas; Haraldsen, Jason | Using computational and experimental techniques, we examine the 2+ oxidation state of Ti when doped into CdSe. | Session 25: Novel Topological and Magnetic Materials |
| 266 | Resonant tunneling anisotropic magnetoresistance induced by magnetic proximity | Shen, Chenghao; Leeney, Timothy; Matos Abiague, Alex; Scharf, Benedikt; Han, Jong E; Zutic, Igor | We reveal that the interplay between Rashba spin-orbit coupling and proximity-induced magnetization in a two-dimensional electron gas leads to peculiar transport properties and large anisotropy of magnetoresistance. | Session 25: Novel Topological and Magnetic Materials |
| 267 | Insights into the local atomic and magnetic structure of MnTe using Magnetic Pair Distribution Technique | Baral, Raju; Frandsen, Benjamin | We report comprehensive atomic and magnetic pair distribution function (PDF) analysis of neutron total scattering data collected from pure and Na-doped MnTe in the temperature range of 2 K – 500 K. | Session 25: Novel Topological and Magnetic Materials |
| 268 | Topologically nontrivial magnetism in Cr2Te3 ultrathin films | Chi, Hang; Ou, Yunbo; Eldred, Tim; Gao, Wenpei; Lauter, Valeria; Dreyer, Michael; Butera, Robert; Coster, George; Rong, Charles; Heiman, Donald; Moodera, Jagadeesh | Topologically nontrivial magnetism in Cr2Te3 ultrathin films | Session 25: Novel Topological and Magnetic Materials |
| 269 | Low loss and near-zero dispersion suspended core polypropylene fibers printed with standard and infinite FDM-based 3D printers for THz communication | Xu, Guofu; Nallappan, Kathirvel; Cao, Yang; Skorobogatiy, Maksim | In this work, a novel infinite 3D printing technique is explored to fabricate continuous several-meter-long low-loss and near-zero dispersion suspended-core polypropylene fibers for application in terahertz communications. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 270 | 2D Material Based Hybrid Nanoscroll for Enhanced Polarized Photodetection and Lasing | GHOSH, RAPTI; Chen, Yang-Fang; Hsieh, Ya-Ping | 2D Material Based Hybrid Nanoscroll for Enhanced Polarized Photodetection and Lasing | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 271 | Photogenerated voltage bias in optically pumped interband cascade lasers | Olafsen, Linda; Stephens, Kyler; Sugijanto, Daniella; Rumman, Nazifa | Photogenerated voltage bias in optically pumped interband cascade lasers | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 272 | Dual Frequency Nematic Liquid Crystal Devices for Fast Optical Filtering | Melnyk, Olha; Jones, Reed; Macedo, Rair; Garbovskiy, Yuriy; Hagen, Guy; Glushchenko, Anatoliy; Spendier, Kathrin; Camley, Robert | We present dual frequency nematic liquid crystal tunable filters based on a series of liquid crystal optical retarders, each placed between crossed polarizers. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 273 | Terahertz Communication Using Dielectric Subwavelength Fibers | nallappan, kathirvel; Cao, Yang; Xu, Guofu; guerboukha, hichem; nerguizian, chahe; Skorobogatiy, Maksim | In this work, we present both experimental and numerical study of the short-range THz communications links that use subwavelength dielectric fibers for information transmission. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 274 | Integration of Multi-layer Black Phosphorus into Photoconductive Antennas for THz Emission | Doha, M. Hasan; Santos Batista, J. I.; Rawwagah, Ahmad; Thompson, Josh; Fereidouni, Arash; Watanabe, Kenji; Taniguchi, Takashi; El-Shenawee, Magda; Churchill, Hugh | We fabricated, characterized, and modeled photoconductive antennas by using black phosphorus (BP; ~ 40 nm thin film as the photoconductor) and hexagonal boron nitride (hBN; a capping layer to prevent the oxidation of BP). | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 275 | Design Configurations Reducing Space Radiation Noise in Ultra-Sensitive Infrared Sensors | Atkinson, William | This paper evaluates considerations in minimizing disruptions of scientific data in ultra-sensitive Infrared (IR) spaced-based telescopes by ions in space radiation and neutrons produced when ions react with the nuclei in high Z metallization. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 276 | Self-Assembled Molecular Junction Bolometers for Mid Infrared Detection | McVay, Elaine; Lin, Yuxuan; Han, Jinchi; Ma, Qiong; Kong, Jing; Jarillo-Herrero, Pablo; Bulovic, Vladimir; Lang, Jeffrey; Niroui, Farnaz; Palacios, Tomas | Here we demonstrate a suspended metal/self-assembled monolayer (SAM)/metal nanostructure to implement such a mechanically tunable tunneling barrier and use it as an ultra-sensitive bolometric mid-infrared (IR) detector. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 277 | Aluminum nitride integration on silicon nitride photonic circuits: a new hybrid approach towards on-chip nonlinear optics | Terrasanta, Giulio; Müller, Manuel; Sommer, Timo; Althammer, Matthias; Poot, Menno | Here we demonstrate the integration of AlN on silicon nitride (SiN) photonic chips. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 278 | Pulse-width dependent sign reversal of third-order nonlinear refractive index in WS2 quantum dots | KARMAKAR, RIYANKA; K. V., Adarsh | We demonstrate that free carriers generation obtained by longer (ns) pulse-width excitation is responsible for negative refractive index, showing the relatively large value of 9 × 10 -13cm 2/W. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 279 | Ultrafast exciton many-body interaction in WS2 single crystal | Taank, Pravrati; K. V., Adarsh | Here, by ultrafast transient differential reflectance spectroscopy, we studied exciton many-body interaction in WS 2 single crystal. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 280 | An Artificial Intelligence-enabled 2D Materials-based Color and Spectral Recognition System | Hejazi, Davoud; Farnoosh, Amirreza; Ostadabbas, Sarah; Kar, Swastik | Color-detection&spectroscopy,two distinct yet inter-related applications of semiconductors,suffer from the same limitations:necessarily large number of identical photoreactors,sophisticated engineering,intricate beam path,and lack of flexibility to adjust for the damaged pixels.2D materials are desirable candidates for optoelectronic applications,but face great challenges due to inherent variabilities in their properties.We report on a novel technique in simultaneously estimating the color&wavelength spectrum of any broadband visible light.The small number of optical thin-film filters of transition metal dichalcogenides(TMDs),fabricated via vapor phase chalcogenization(VPC),are designed to have enough variabilities with respect to each other.We apply artificial intelligence(AI)algorithms such as machine learning(ML)and pattern recognition on emergent optoelectronic responses of the filters upon shining various spectra,and obtain the underlying nonlinear ruling function for the collective of filters.Later,we estimate the color&spectrum of any unknown incident light using the learned function on the optoelectronic data of the light that is collected from the filters. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 281 | Polarization-selective modulation of supercavity resonances originating from bound states in the continuum | Kyaw, Chan; Yahiaoui, Riad; Burrow, Joshua; Tran, Viet; Keelen, Kyron; Sims, Wesley; Red, Eddie; Rockward, Willie; Thomas, Mikkel; Saragan, Andrew; Agha, Imad; Searles, Thomas | In this work, we report two methods to drive the formation of BICs in terahertz metasurfaces. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 282 | Photo-assisted non-volatile resistive switching in CdS/V3O5 hybrid | Adda, Coline; Navarro, Henry; Lee, Minhan; Schuller, Ivan | In this work, we have fabricated and characterized a hybrid composed of the photoconductor CdS on top of V 3O 5 thin film. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 283 | Difference frequency generation in AlGaAs Bragg-reflection waveguides using an integrated quantum dot laser | Chapman, Robert; Schlager, Alexander; Goetsch, Maximilian; Frick, Stefan; Thiel, Hannah; Suchomel, Holger; Kamp, Martin; Hoefling, Sven; Schneider, Christian; Weihs, Gregor | Here, we demonstrate nonlinear difference frequency generation (DFG) in an AlGaAs waveguide that is itself the gain medium for one of the required lasers. | Session 26: Optical, Laser, and Photonic Devices and Applications |
| 284 | First-Principles Theory for Understanding Excitons in Stacked Organic Assemblies | Sharifzadeh, Sahar | Here, we utilize first-principles theory to investigate the excitonic properties of stacks of functionalized PTCDI DNA base surrogates as a model system to study inter- and intra-molecular interactions. | Session 27: Organic Electronics |
| 285 | Porous, aligned polymer films for improved organic electrochemical transistors | Flagg, Lucas; DeLongchamp, Dean; Richter, Lee | We study the role of porosity and molecular order on the performance of poly(3-hexylthiophene-2,5-diyl) (P3HT) based organic electrochemical transistors (OECTs). | Session 27: Organic Electronics |
| 286 | Directing Organic Semiconductor Crystal Orientation and Shape using Nanoconfining Scaffolds | Alaei, Aida; Zong, Kai; Asawa, Kaustubh; Chou, Tseng-Ming; Briseño, Alejandro L.; Choi, Chang-Hwan; Lee, Stephanie S. | Here we demonstrate a method to dictate crystal orientation by (mis)matching the crystal dimensionality with the geometry of the nanoconfining scaffolds. | Session 27: Organic Electronics |
| 287 | Phase Separation Dynamics in an Annealed Polymer:Fullerene Blend Analyzed using the Critical Point Model of the Permittivity | Shikler, Rafi; Hai, Netaniel | In this work we show for the first time how spectroscopic ellipsometry can be used to analyze the dynamics of morphological changes that take place during the annealing of a film of two bench-mark materials used for organic solar cells that are the most reported on in the literature, poly(3-hexyl-thiophene 2.5-diyl) (P3HT) and [6,6] phenyl C61 Butyric acid methyl ester (PCBM). | Session 27: Organic Electronics |
| 288 | Marangoni-Coupled Alignment in a Semiconductor-Elastomer Blend for Stretchable Electronics | Dudenas, Peter; Gann, Eliot; Richter, Lee; DeLongchamp, Dean | Here, we report on a long-wavelength Marangoni instability in the coating process that leads to significant variation in the local semiconducting polymer fibril alignment. | Session 27: Organic Electronics |
| 289 | The Impact of Illumination on the Photoluminescence and Depth Profile of MEH-PPV/dPS Thin Films | Moncada, Joshua; Terlier, Tanguy; Ivanov, Ilia; Verduzco, Rafael; Dadmun, Mark | This study examines the changes in photoluminescence and film structure due to white light exposure during annealing of conjugated polymer blend thin films. | Session 27: Organic Electronics |
| 290 | Relationship between Charge-transfer State Electroluminescence and the Degradation of Organic Photovoltaics | Arneson, Claire; Huang, Xinjing; Huang, Xiaheng; Fan, Dejiu; Li, Yongxi; Gao, Mengyuan; Ye, Long; Ade, Harald; Forrest, Stephen | We modify this theory by distinguishing between electroluminescent external quantum efficiency and external charge transfer emission efficiency, and use it to quantify the degradation of archetype vacuum- and solution-processed devices. | Session 27: Organic Electronics |
| 291 | Resonant Tender X-ray Diffraction for Disclosing the Molecular Packing of Paracrystalline Conjugated Polymer Films | McNeill, Christopher; Freychet, Guillaume; Gann, Eliot; Jiao, Xuechen; Thomsen, Lars; Feng, Guitao; Li, Weiwei | In this presentation it will be shown that resonant diffraction (also known as anomalous diffraction) is able to provide new molecular packing information about conjugated polymer films. | Session 27: Organic Electronics |
| 292 | Impact of the primary structure of organic semiconductors on amorphous topology and crystal morphology | Snyder, Chad | In this presentation, we show how much of the above can be influenced and quantified through the primary structure of the organic semiconductors, i.e., molar mass, molar mass distribution, and comonomers/defects. | Session 27: Organic Electronics |
| 293 | Morphology-performance Correlation in Near-Infrared Organic Solar Cells with Efficiency Exceeding 9% | Alqahtani, Obaid; Collins, Brian; Grabner, Devin; Murcia, Victor; Kan, Zhipping; Xu, Tongle; Duan, Tainan | Here, we utilized X-ray techniques to probe their morphology. | Session 27: Organic Electronics |
| 294 | Real-time analysis of mixed ion and electron transfer in a conjugated polymer during the doping and de-doping | THAKUR, RATUL MITRA; Easley, Alexandra; Wang, Shaoyang; Zhang, Yiren; Ober, Christopher; Lutkenhaus, Jodie | In this talk, the mechanism of mixed ion-electron transfer studied using electrochemical quartz crystal microbalance with dissipation monitoring is discussed. | Session 27: Organic Electronics |
| 295 | Multiscale approach to compute donor-acceptor interchain couplings for realistic interfacial geometries | Agarwala, Puja; Milner, Scott; Gomez, Enrique | In this way, we obtain the histogram of interchain couplings, which exhibit a long tail of rare but strong couplings above 100 meV. | Session 27: Organic Electronics |
| 296 | Field-Induced Spectral Shift in Organic Charge-Transfer State Luminescence | Concannon, Nolan; Holmes, Russell | Here we employ excited states formed across electron donor-acceptor heterojunctions, called charge-transfer (CT) states, as a field-responsive electro-optical medium. | Session 27: Organic Electronics |
| 297 | Understanding organic materials formation using in situ transient absorption spectroscopy | Wong, Cathy | In this work, a single-shot transient absorption spectroscopy technique is used that can measure transient spectra with up to a 60 ps pump-probe time delay in mere seconds. | Session 27: Organic Electronics |
| 298 | Effect of dipole orientational order on charge transfer exciton states in a donor-acceptor single crystal | Macdonald, Josh; Piana, Giacomo; Comin, Massimiliano; Von Hauff, Elizabeth; Kociok-Köhn, Gabriele; Bowen, Chris; Lagoudakis, Pavlos; D’Avino, Gabriele; Da Como, Enrico | We find that the absorption band consists of three separate CT exciton states in the disordered phase – a novel finding in donor-acceptor co-crystals. | Session 27: Organic Electronics |
| 299 | Dynamics of Triplet-Triplet Formation Versus Yield of Free Triplets in Intramolecular Singlet Fission | Chesler, Moshe; Khan, Souratosh; Mazumdar, Sumitendra | We report many-body calculations of excited states, including TT, in 2 hypothetical phenylene-linked anthracene dimers. | Session 27: Organic Electronics |
| 300 | Universal Dependence of Carrier Mobility on Polymer Chain Length in n-Type Semiconducting Polymers | Tran, Duyen; Robitaille, Amélie; Hai, I Jo; Chiu, Yu-Cheng; Leclerc, Mario; Jenekhe, Samson | Universal Dependence of Carrier Mobility on Polymer Chain Length in n-Type Semiconducting Polymers | Session 27: Organic Electronics |
| 301 | Effects of concentration on charge trapping in polymer electrets with aryl-amine donors. | Plunkett, Evan; Zhang, Qingyang; Katz, Howard; Reich, Daniel | We use aryl-amines in thin film polystyrene dielectrics to modify electron and hole trap states and densities. | Session 27: Organic Electronics |
| 302 | Model for the Electro-mechanical Behavior of Elastic Organic Transistors | Reynolds, Veronica; Oh, Saejin; Xie, Renxuan; Chabinyc, Michael | We describe the application of mechanical models of the elasticity of polymers to predict the electrical characteristics of elastic TFTs. | Session 27: Organic Electronics |
| 303 | Steady-State and Transient Behavior of Ionic Liquid Crystal Elastomers Based Organic Electrochemical Transistors | Rajapaksha, Chathuranga Prageeth; Paudel, Pushpa; Kodikara, P M Sineth; Dahal, Drona; Feng, Chenrun; Kaphle, Vikash; Lussem, Bjorn; Jakli, Antal | Here, we report a novel flexible OECT based on iLCE solid electrolyte. | Session 27: Organic Electronics |
| 304 | Self-Healable Ultra-Stretchable Organic Electronics for Wearable Strain Sensors | Wujcik, Evan; Lu, Yang; Jeon, Ju-Won | Self-Healable Ultra-Stretchable Organic Electronics for Wearable Strain Sensors | Session 27: Organic Electronics |
| 305 | Spin-triplet exciton impact on electrical devices | Bittle, Emily; Engmann, Sebastian; Richter, Lee; Gundlach, David; Hallani, Rawad; Holland, Emma; Anthony, John | In this talk, we present results which show singlet fission and triplet fusion processes though the observation of MEL and MPC signals from organic light emitting diodes and organic transistors. | Session 27: Organic Electronics |
| 306 | Electro-reflectance study of low-voltage turn-on in triplet fusion OLED materials | Engmann, Sebastian; Bittle, Emily; Richter, Lee; Gundlach, David | In this presentation we will present electro-reflection (ER) studies that elucidate the built-in potentials in 2 prototypical OLED devices based on Rubrene and DiFTES-ADT as the emitting layer. | Session 27: Organic Electronics |
| 307 | Effects of Lateral Ion Currents in Organic Electrochemical Transistors | Paudel, Pushpa; Kaphle, Vikash; Dahal, Drona; Radha Krishnan, Raj Kishen; Lussem, Bjorn | We discuss the experimental results with the help of simulation results using 2D model [1] correctly accounting for lateral drift and diffusion of ions inside polymer channel, resulting in a better understanding of the working mechanisms of OECTs in general and more specifically a better understanding of the scaling laws of this new technology [2]. | Session 27: Organic Electronics |
| 308 | Defect-assisted nonradiative recombination in halide perovskites | Van de Walle, Chris | We have performed comprehensive studies for the prototypical hybrid perovskite MAPbI 3 [MA=(CH 3NH 3)], as well as for other halide perovskites. | Session 28: Perovskites and Oxide Semiconductors |
| 309 | Deep levels in cesium lead bromide from native defects and hydrogen | Swift, Michael; Lyons, John | In this work, we reject the SDH for CsPbBr 3. | Session 28: Perovskites and Oxide Semiconductors |
| 310 | The Defect Tolerance of Chalcogenide Perovskites BaZrS3 and Ba3Zr2S7 | Luo, Jiang; Zhao, Boyang; ZHANG, ZHAOHAN; Chen, Huandong; Thind, Arashdeep; Hartman, Steven; Sadtler, Bryce; Ravichandran, Jayakanth; Mishra, Rohan | We have used BaZrS 3 and Ba 3Zr 2S 7 as prototypical CPs and investigated their defect tolerance to intrinsic point defects using a combination of density-functional-theory calculations, spectroscopic and transport measurements. | Session 28: Perovskites and Oxide Semiconductors |
| 311 | Persistent photoconductivity in barium titanate | Pansegrau, Christopher; McCluskey, Matthew | Persistent photoconductivity in barium titanate | Session 28: Perovskites and Oxide Semiconductors |
| 312 | Role of defects in photocatalytic water splitting: Monodoped vs Codoped SrTiO3 | Kumar, Manish; Bhattacharya, Saswata | Here we have investigated the role of monodopants (nonmetals (N, S) and metals (Mn, Rh)) and codopants in SrTiO 3 to ameliorate the photocatalytic efficiency for water splitting by reducing its bandgap using hybrid density functional theory (HSE06), many-body perturbation theory approach (viz. | Session 28: Perovskites and Oxide Semiconductors |
| 313 | Localized Phase Transition of TiO2 Thin Films Induced by Sub-bandgap Laser Irradiation | Ahmed, Syeed; Poole, Violet; Igo, John; Gu, Yi; McCluskey, Matthew | Laser-induced localized phase transitions of sputtered titanium dioxide (TiO 2) thin films are reported in this study. | Session 28: Perovskites and Oxide Semiconductors |
| 314 | Epitaxial stabilization of rutile germanium oxide thin film by molecular beam epitaxy | Chae, Sieun; Paik, Hanjong; Vu, Nguyen; Kioupakis, Emmanouil; Heron, John | Here, we report the growth of single-crystalline r-GeO 2 thin films on R-plane sapphire substrates using molecular beam epitaxy. | Session 28: Perovskites and Oxide Semiconductors |
| 315 | Thermal Annealing ZnO and ZnS Powders as an Alternative to Type II Heterostructure Synthesis | Kuhs, Christopher; Jacobson, Christian; Reish, Matthew; Simmons, Jay; Halas, N; Everitt, Henry | Here we explore a simple thermal annealing approach and examine the effect annealing has on the defect and band edge emissions of four samples: vacuum-annealed ZnO with and without sulfur, and ZnS annealed in vacuum and with oxygen. | Session 28: Perovskites and Oxide Semiconductors |
| 316 | Multipole Clustering is Responsible for the Doping Bottleneck in Hematite | Urena Baltazar, Valentin; Smart, Tyler; Ping, Yuan | In this work, we investigated the underlying mechanism of low optimal doping concentration from first-principles calculations with group IV (Ti, Zr, Hf) and XIV (Si, Ge, Sn, Pb) doping. | Session 28: Perovskites and Oxide Semiconductors |
| 317 | Finite-size corrections of defect energy levels involving ionic polarization | Falletta, Stefano; Wiktor, Julia; Pasquarello, Alfredo | We develop a scheme for finite-size corrections of vertical transition energies and single-particle energy levels involving defect states with built-in ionic polarization in supercell calculations. | Session 28: Perovskites and Oxide Semiconductors |
| 318 | Donor doping of CsPbBr3 | Lyons, John | Here I examine how bismuth incorporates into CsPbBr 3 using first-principles hybrid density functional theory. | Session 28: Perovskites and Oxide Semiconductors |
| 319 | First-principles calculations of native defects in beryllium oxide | CHEN, YUBI; Turiansky, Mark; Van de Walle, Chris | We examine the energetics and electronic structure, as well as the atomic geometries and spin properties of the native defects of BeO. | Session 28: Perovskites and Oxide Semiconductors |
| 320 | Resolving the puzzle of solvated electrons’ location in alkali metal doped zeolites | Sarker, Debalaya; Troppenz, Maria; Rigamonti, Santiago; Draxl, Claudia; Levchenko, Sergey; Scheffler, Matthias | Combining a cluster-expansion model, parameterized with density-functional theory calculations, with ab initio atomistic thermodynamics, we address this issue. | Session 28: Perovskites and Oxide Semiconductors |
| 321 | Disinfection Efficacy of Ultraviolet Light Sources on SARS-CoV-2* | Huhman, Brett | This paper will discuss the UV sources evaluated in the NCR2T effort along with the optical and biological protocols used to estimate the efficacy of the various approaches available on the commercial market. | Session 29: Physics of COVID-19 |
| 322 | The physics of evaporating human-exhaled drops and possible implications for virus viability | Jensen, Jorgen | As human exhaled drops contain a complex mixture of electrolytes and organic material, this talk uses microscopy to examine the efflorescence process of different salts in human-exhaled drops. | Session 29: Physics of COVID-19 |
| 323 | What can imaging tell us about SARS-Cov-2 infection | Jeraj, Robert; Klanecek, Zan; Studen, Andrej; Yip, Stephen | In this lecture, we will review medical imaging related to COVID-19 and emphaze richness of information that it contains. | Session 29: Physics of COVID-19 |
| 324 | A Topological Data Analysis perspective on coronavirus evolution | Rabadan, Raul | He applies quantitative approaches to model and understand the dynamics of biological systems through the lens of genomics. | Session 29: Physics of COVID-19 |
| 325 | The role of transmission network structure in COVID-19 spread and control | Hill, Alison | In this talk I will discuss approaches to building models that account for the heterogeneous nature of human contact networks, and about how these factors specifically relate to the COVID-19 pandemic. | Session 29: Physics of COVID-19 |
| 326 | Doing More with Less – Advanced Sensing Enabling Next Generation Inspection, Maintenance, and Repair Platforms for Offshore Energy Assets | Speck, Andrew | This talk will present the novel sensor architecture embedded on the UROV platform to enable this vision. | Session 30: Seeing the Energy Future |
| 327 | The Future of Solar Energy | Jones-Albertus, Becca | This talk will describe a vision for the future of solar energy technology and priorities for the next decade of solar research. | Session 30: Seeing the Energy Future |
| 328 | How Can Nuclear Energy Support a Clean Future? | Slaybaugh, Rachel | This talk will focus at a high level on the role nuclear technology could plan in the clean energy future of the U.S. and the world. | Session 30: Seeing the Energy Future |
| 329 | Let’s Be An Awesome Future’s Past | Koningstein, Ross | Let’s Be An Awesome Future’s Past | Session 30: Seeing the Energy Future |
| 330 | Electric Vehicle Battery Systems – The Path Forward | Gray, Denise | Electric Vehicle Battery Systems – The Path Forward | Session 30: Seeing the Energy Future |
| 331 | Probing ultrahigh magneto-optical properties and time-resolved spin dynamics in InAsP ternary alloys | Thapa, Sunil; Stanton, Christopher; Magill, Brenden; Herath Mudiyanselage, Rathsara; Khodaparast, Giti; Matsuda, Yasuhiro; Yang, Zhuo; Kohama, Yoshimitsu; Choi, Sukgeun; Palmstrom, Chris | We present a room temperature cyclotron resonance (CR) study of n-type InAs xP 1−x (x=0.07,0.34) films in ultrahigh magnetic fields in the Faraday’s geometry. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 332 | Ultrafast Spin-Lasers | Jung, Natalie; Lindemann, Markus; Pusch, Tobias; Michalzik, Rainer; Hofmann, Martin; Gerhardt, Nils | Here, we review recent results on ultrafast spin-lasers for the next generation of optical communication systems. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 333 | Birefringent Spin-Lasers | Cao, David; Xu, Gaofeng; Labinac, Velimir; Zutic, Igor | By using transparent rate equations, we explain how the birefringence can provide key differences in the modulation frequency of the intensity and polarization of light emitted from a laser[4]. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 334 | Spin lasers as coupled harmonic oscillators | Labinac, Velimir; Xu, Gaofeng; Cao, David; Zutic, Igor | By linearizing these equations and using a small signal analysis we find that the modulation of the intensity or polarization of the emitted light can be effectively represented by the two weakly-coupled harmonic oscillators of different resonant frequencies. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 335 | Rate-equations description of spin lasers | Patel, Krish; Xu, Gaofeng; Zutic, Igor | We apply a nonlinear gain model based on accurate electronic structure calculations to develop a more general description of spin lasers and reveal the effects of such a nonlinear gain model on the dynamics of spin lasers. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 336 | Electronic transport in quantum InSb nanowire spin-valve devices | Yang, Zedong; Heischmidt, Brett; Gazibegovic, Sasa; Badawy, Ghada; Car, Diana; Crowell, Paul; Bakkers, Erik; Pribiag, Vlad | We find that the transport is phase-coherent and, for contact spacings of a few hundred nanometers, also quasi-ballistic 1. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 337 | Electric field control of photoluminescence polarization in Ge/SiGe quantum wells | Rossi, Simone; Talamas Simola, Enrico; Isella, Giovanni; Pezzoli, Fabio | In this work we present a polarization-resolved photoluminescence study in a cylindrical p-i-n diode where the intrinsic region of the device consists of Ge QWs in Si 0.15Ge 0.85 barriers. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 338 | Magneto-optical investigation of spin and carrier kinetics in Ge1-xSnx/Ge heterostructures | Vitiello, Elisa; Rossi, Simone; Broderick, Christopher; Gravina, Giorgio; Balocchi, Andrea; Marie, Xavier; O’Reilly, Eoin; Myronov, Maksym; Pezzoli, Fabio | We specifically apply optical spin orientation combined with a magneto-optical analysis of the radiative emission to demonstrate coherent spin dynamics through quantum beat spectroscopy 2 and sub-ns carrier kinetics through the Hanle effect 3. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 339 | Optical injection of spin current in direct bandgap group IV semiconductors | Fettu, Gabriel; Sipe, John; Moutanabbir, Oussama | Here we exploit recent progress in group IV bandgap engineering to investigate the optical processes of spin current injection in a silicon-compatible platform. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 340 | Magneto-Optical and Magneto-Transport Studies of Near Surface InAs Quantum Wells | Magill, Brenden; Khodaparast, Giti; Thapa, Sunil; Stanton, Christopher; Yuan, Joseph; Hatefipour, Mehdi; Mayer, William; Dartiailh, Matthieu; Sardashti, Kasra; Wickramasinghe, Kaushini; Shabani, Javad; Matsuda, Yasuhiro; Yang, Zhuo; Kohama, Yoshimitsu | In this talk, we present a combined magneto-optical, magneto-transport, and theoretical approach to study the band structure of these QWs. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 341 | Dynamic Nuclear Polarization and Nuclear-Induced Frequency Focusing in Gallium Arsenide under periodic optical electron spin pumping | Dominguez, Michael; Iafrate, Joseph; Sih, Vanessa | The observation of nuclear-induced frequency focusing and its dependence on pump wavelength is corroborated by numerical calculations using a model incorporating optical orientation and the optical Stark effect (Phys. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 342 | Observation of carrier concentration dependent spintronic terahertz emission from n-GaN/NiFe heterostructures | Vetter, Eric; Biliroglu, Melike; Seyitliyev, Dovletgeldi; Reddy, Pramod; Kirste, Ronny; Sitar, Zlatko; Collazo, Ramon; Gundogdu, Kenan; Sun, Dali | We found that the amplitude of THz emission strongly depends on the carrier concentration of the semiconductor layer, which could be attributed to the tunable Rashba state occurring at the n-GaN/ferromagnet interface. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 343 | SiGe Spintronic Devices with High-k Dielectric Gates | DeMell, Jennifer; Stephen, Gregory; Gaspe, Chomani; Richardson, Christopher; Friedman, Adam | We present magnetotransport results for both the charge- and spin-based devices from 3 K – 300 K at fields up to 2.5 T and compare these results for multiple samples. | Session 31: Semiconductor Spintronics: Optics and Devices |
| 344 | AMPLITUDE REPRESENTATION OF THE LANDAU-LIFSHITZ EQUATION | Li, Gang; Sun, Chen; Pokrovsky, Valery | We use a classical representation for the Landau-Lifshitz equation, the energy spectrum of magnons is studied. | Session 32: Spin Dynamics and Excitations |
| 345 | Equations of motions for spin-1 magnets — a u(3) formalism, suitable to investigate dynamical and thermodynamical properties | Remund, Kimberly; Pohle, Rico; Akagi, Yutaka; Romhanyi, Judit; Shannon, Nicholas | [Andreev84, Barzykin91] In this talk, we extend the commonly used su(3) algebra for spin-1 moments to the u(3) Algebra [Papanicolaou88], treating dipolar and quadrupolar degrees of freedom on an equal footing, and derive equations of motion, which take a simple form and are well suited for numerical implementation. | Session 32: Spin Dynamics and Excitations |
| 346 | Correlated Magnetic Properties in Ultra-low Damping Ferromagnetic and Heavy Metal Bilayers | Lujan, David; Lee, Aidan; Chang, Tsun Chun; Nunley, Timothy; Sobotkiewich, Kemal; Lee, Shang-Fan; Yang, Fengyuan; Li, Xiaoqin (Elaine) | Using momentum-resolved Brillouin light scattering, we investigate a series of epitaxially grown Pt (3 nm)/Co xFe 1-x bilayers that exhibit the lowest damping in metallic FMs. | Session 32: Spin Dynamics and Excitations |
| 347 | Spin Echo Simulations and Supervised Machine Learning | Snider, Charles; Carr, Stephen; Feldman, Dmitri; Ramanathan, Chandrasekhar; Marston, Brad; Mitrovic, Vesna | Using a numerical simulation of a phenomenological model of nuclear spin-spin interaction mediated by collective electronic spin excitations, we study the effects of such an interaction on nuclear magnetic resonance spin echo experiments. | Session 32: Spin Dynamics and Excitations |
| 348 | Magnetization dynamics of room-temperature vdWs magnet Fe5GeTe2 | Alahmed, Laith; Nepal, Bhuwan; Macy, Juan; Wei, Kaya; Zheng, Wenkai; Sapkota, Arjun; Mazza, Alessandro; Brahlek, Matthew; Jin, Wencan; Zhang, Shulei; Mewes, Claudia; Balicas, Luis; Mewes, Tim; Li, Peng | In our work, we synthesized bulk Fe 5GeTe 2 crystals and studied the magnetic properties by temperature-dependent vibrating sample magnetometry (VSM) and ferromagnetic resonance (FMR) techniques. | Session 32: Spin Dynamics and Excitations |
| 349 | Spin-orbit exciton in a honeycomb lattice magnet CoTiO3: Revealing a link between magnetism in d- and f-electron systems | Yuan, Bo; Stone, Matthew; Shu, Guo-Jiun; Chou, Fangchang; Rao, Xin; Clancy, James; Kim, Young-June | We present inelastic neutron scattering study of the spin-orbit (SO) exciton in a single crystal sample of CoTiO 3 as a function of temperature. | Session 32: Spin Dynamics and Excitations |
| 350 | Nonlocal Gilbert damping and magnetic interactions in noncollinear magnetic nanostructures from first principles | Brinker, Sascha; dos Santos Dias, Manuel; Lounis, Samir | Utilizing a first-principles description of the spin dynamics of noncollinear magnetic nanostructures based on linear-response time-dependent density functional theory [1], we demonstrate that the Gilbert damping and gyromagnetic tensors can be expressed in terms of couplings, chiral or not, of the magnetic moments. | Session 32: Spin Dynamics and Excitations |
| 351 | Ultrafast Spin Dynamics in the Chiral Helimagnet Cr1/3NbS2 | Liu, Hengzhou; Trinh, Minh Tuan; Clements, Ellie; Li, Ling; Mandrus, David; Srikanth, Hariharan; Phan, Manh-Huong; Karaiskaj, Denis | Here, we present an ultrafast spin dynamics study in single crystals of chiral helimagnet Cr 1/3NbS 2 using the time-resolved magneto-optical Kerr effect technique. | Session 32: Spin Dynamics and Excitations |
| 352 | Spin excitations in the multiferroic skyrmion host GaV4S8 | Pokharel, Ganesh; Suriya Arachchige, Hasitha; Ehlers, Georg; Do, Seunghwan; Stone, Matthew; Lumsden, Mark; Zhang, Hao; Qiu, Yiming; Fishman, Randy; Wilson, Stephen; Mandrus, David; Christianson, Andrew | A Heisenberg spin model with competing symmetric and asymmetric exchange (DM) interactions explain the experimental data. | Session 32: Spin Dynamics and Excitations |
| 353 | Structure change across the Morin transition temperature of single crystal α-Fe2O3 | He, Jiaming; Wang, Suyin; Chen, Yu-sheng; Zhou, Jianshi | Alpha-ferric oxide (α-Fe 2O 3) has been the subject of extensive studies aiming to determine the relationship between spontaneous magnetic moments and structure. | Session 32: Spin Dynamics and Excitations |
| 354 | Micromagnetic modeling of skyrmion and domain wall dynamics in Pt/TmIG systems | Pelekhov, Denis; Freyermuth, Jacob; Selcu, Camelia; Ahmed, Adam; Bagues Salguero, Nuria; Guo, Jason; Lee, Aidan; Lyalin, Igor; McCullian, Brendan; Wang, Binbin; Wu, Po Kuan; Hammel, P Chris; Kawakami, Roland; McComb, David; Yang, Fengyuan; Randeria, Mohit | We present investigation of skyrmion and domain wall formation and dynamics in Pt/Tm 3Fe 5O 12(TmIG) bilayers. | Session 32: Spin Dynamics and Excitations |
| 355 | Unconventional dynamics of ferrimagnets in the vicinity of compensation points | Kim, Se Kwon | In this talk, we will discuss the recent theoretical progress on the ensuing novel dynamics of ferrimagnets. | Session 32: Spin Dynamics and Excitations |
| 356 | Characterization of the Dynamics of FeRh using Time-Domain Thermoreflectance (TDTR) | Harton, Renee; Mason, Nadya; Cahill, David | Using Time-Domain Thermoreflectance (TDTR), a pump probe technique used to determine the thermoreflectance (TR) of samples, we studied the dynamics of FeRh. | Session 32: Spin Dynamics and Excitations |
| 357 | Spin-Orbit-Torque Exchange Resonance in Magnetic Topological Insulators | Tang, Junyu; Cheng, Ran | We formulate the adiabatic spin-orbit torque (SOT) arising from the topological electrons in MTI as well as its reciprocal effect — topological charge pumping. | Session 33: Spin Pumping and Spin Resonance |
| 358 | Coherent spin current amplification by a non-adiabatic interaction. | Assouline, Benjamin; Brik, Marina; Bernstein, Nirel; Capua, Amir | We propose a mechanism for coherent spin current amplification in a solid-state magnetic medium device. | Session 33: Spin Pumping and Spin Resonance |
| 359 | Improvement in Spin-Torque Ferromagnetic Resonance Using Frequency Modulation | Karimeddiny, Saba; Ralph, Daniel | We show, using a Pt(6 nm)/Py sample series, that the AM causes changes to the resonant lineshape that are not captured by the conventional theoretical models of ST-FMR. | Session 33: Spin Pumping and Spin Resonance |
| 360 | A Ferromagnetic Resonance Study of Magnetic Properties in Magnetron Sputtered NixFe100-x Thin Films and Multilayers for Shielding Applications. | McMaster, Matthew; Hendren, William; Scott, Jade; Bowman, Robert | We present a systematic study of the effect of process conditions and stoichiometry on the ferromagnetic resonance (FMR) and spin wave properties [1][2] of Ni xFe 100-x alloy thin films fabricated by magnetron sputtering. | Session 33: Spin Pumping and Spin Resonance |
| 361 | Magnetization-Independent Spin Hall Effect in Ferromagnetic Trilayers | Mittelstaedt, Joseph; Buhrman, Robert; Ralph, Daniel | We observe signals with the symmetry of a magnetization-independent spin Hall effect with spin-to-charge efficiencies as large as 10% in NiFe, which is comparable to heavy metal-ferromagnet bilayers. | Session 33: Spin Pumping and Spin Resonance |
| 362 | Detection of above-NV-frequency ferromagnetic dynamics | McCullian, Brendan; Thabt, Ahmed; Gray, Benjamin; Melendez, Alex; Wolf, Michael; Safonov, Vladimir; Pelekhov, Denis; Bhallamudi, Vidya; Page, Michael; Hammel, P Chris | Here, we use microwaves to drive a low damping ferrite thin film and simultaneously detect conventional microwave absorption and NV fluorescence signals. | Session 33: Spin Pumping and Spin Resonance |
| 363 | Influence of Structural Disorder on Magnetic Relaxation in Fe Thin Films | Wu, Shuang; Smith, David; Rai, Anish; Clavel, Michael; Hudait, Mantu; Mewes, Tim; Emori, Satoru | In this work, we examine magnetic relaxation in polycrystalline and amorphous Fe films grown on different seed layers. | Session 33: Spin Pumping and Spin Resonance |
| 364 | Nonlocal Uniform-Mode Ferromagnetic Resonance Spin Pumping | Cheng, Yang; Lee, Aidan; Wu, Guanzhong; Pelekhov, Denis; Hammel, P Chris; Yang, Fengyuan | Here, we report a new nonlocal spin injection scheme using uniform-mode ferromagnetic resonance (FMR) spin pumping in Pt/ Y3Fe5O12 (YIG) lateral structures. | Session 33: Spin Pumping and Spin Resonance |
| 365 | Superconductivity-enhanced spin pumping: The role of Andreev resonances | Tanhayi Ahari, Mostafa; Tserkovnyak, Yaroslav | We describe a simple hybrid superconductor/ferromagnetic-insulator structure manifesting spin-resolved Andreev bound states in which dynamic magnetization is employed to probe spin related physics. | Session 33: Spin Pumping and Spin Resonance |
| 366 | Determination of the spin Hall angle by the inverse spin Hall effect and the spin torque ferromagnetic resonance: comparison of methods | Ben-Shalom, Ranen | In this work we measure the SHA from DC bias current dependent inverse spin Hall effect (ISHE) measurements which is more immune to the injected DC current noise and to the artefacts related the optimization problem. | Session 33: Spin Pumping and Spin Resonance |
| 367 | Spin pumping in YIG/s-wave superconductor hybrids | Carreira, Santiago; Sanchez-Manzano, David; Rouco, Victor; Sander, Anke; Collin, Sophie; Carretero, Cecile; Santamaria, Jacobo; Anane, Adbelmadjid; Villegas, Javier | The study of the magnetization dynamics of the F is thus a useful approach to investigate the spin diffusion in the SC [2]. | Session 33: Spin Pumping and Spin Resonance |
| 368 | Microwave and spin transfer torque driven coherent control in ferromagnets | Brik, Marina; Bernstein, Nirel; Capua, Amir | This technique is interesting in the context of ferromagnetic materials because of the ability to combine it with spintronics for the purpose of fundamental spin transport research, low-power information processing, and potentially future quantum bit (Qubit) applications. | Session 34: Spin Transfer and Spin Torques |
| 369 | Temperature-dependent spin-transport and current-induced torques in superconductor/ferromagnet heterostructures | Müller, Manuel; Liensberger, Lukas; Flacke, Luis; Huebl, Hans; Kamra, Akashdeep; Belzig, Wolfgang; Gross, Rudolf; Weiler, Mathias; Althammer, Matthias | We investigate the injection of quasiparticle spin currents in a NbN/Permalloy (Py) heterostructures with a Pt spin sink layer. | Session 34: Spin Transfer and Spin Torques |
| 370 | Magnetic Droplet Solitons from Unconventional Out-of-Plane Spin Orbit Torques | Klause, Robin; Hoffmann, Axel | Towards this end, we investigated with micromagnetic simulations if these unconventional OOP SOTs can generate droplet solitons in rectangular geometries. | Session 34: Spin Transfer and Spin Torques |
| 371 | Origin of Nonlinear Damping due to Mode Coupling in Auto-Oscillatory Modes Strongly Driven by Spin-Orbit Torque | Lee, Inhee; Zhang, Chi; Singh, Simranjeet; McCullian, Brendan; Hammel, P Chris | We investigate the physical origin of nonlinear damping due to mode-mode coupling between several auto-oscillatory modes driven by spin-orbit torque in constricted Py/Pt heterostructures by examining the dependence of auto-oscillation on temperature and applied field angle. | Session 34: Spin Transfer and Spin Torques |
| 372 | Controlling itinerant spin dynamics for enhanced spin transfer torque | Semenov, Yuriy; Xu, Xinyi; Kim, Ki | In this work, we reexamine the STT process by explicitly considering the dephasing between the injected electron spins. | Session 34: Spin Transfer and Spin Torques |
| 373 | Anomalous spin Hall and inverse spin Hall effects in magnetic systems | Wang, Xiang Rong | We predict anomalous spin-Hall effects (SHEs) and anomalous inverse SHEs in magnetic systems. | Session 34: Spin Transfer and Spin Torques |
| 374 | Interfacial crystal Hall effect reversible by ferroelectric polarization | Shao, Ding-Fu; Ding, Jun; Gurung, Gautam; Zhang, Shuhui; Tsymbal, Evgeny | Here, we predict the appearance of the CHE in heterostructures composed of compensated antiferromagnetic metals and non-magnetic insulators due to reduced symmetry at the interface. | Session 34: Spin Transfer and Spin Torques |
| 375 | Gate-tunable spin torque and edge current in magnetized graphene nanoribbons caused by spin-orbit coupling | Martins de Sousa, Matheus; Chen, Wei | Motivated by recent experiments that demonstrate gate-tunable spin-orbit coupling (SOC) in graphene heterostructures, we investigate the effect of SOC on the magnetic response of graphene. | Session 34: Spin Transfer and Spin Torques |
| 376 | Magnetic skyrmions probed by SP-STM: topology imprinted on the charge current and spin transfer torque | Palotas, Krisztian; Rozsa, Levente; Szunyogh, László | Our work contributes to this understanding by a theoretical investigation of the tunneling electron charge and spin transport probing magnetic skyrmions. | Session 34: Spin Transfer and Spin Torques |
| 377 | Magnetization control by angular momentum transfer from surface acoustic wave to ferromagnetic spin moments | Sasaki, Ryo; Nii, Yoichi; Onose, Yoshinori | Here we demonstrate that the phonon angular momentum of surface acoustic wave can control the magnetization of a ferromagnetic Ni film by means of the phononic-to-electronic conversion of angular momentum in a Ni/LiNbO 3 hybrid device. | Session 34: Spin Transfer and Spin Torques |
| 378 | Energy and momentum conservation in spin transfer | Mitrofanov, Alexander; Urazhdin, Sergei | We use fully quantum simulations of scattering of spin-polarized electron wavepacket by a ferromagnet modelled as a 1d spin-1/2 chain, to show that energy and momentum conservation laws impose strong restrictions on the characteristics of magnetic excitations generated by spin transfer. | Session 34: Spin Transfer and Spin Torques |
| 379 | Ballistic-to-diffusive transition in spin chains with broken integrability | Ferreira, João; Filippone, Michele | We study the ballistic-to-diffusive transition induced by the weak breaking of integrability in a boundary-driven XXZ spin-chain. | Session 34: Spin Transfer and Spin Torques |
| 380 | Spin current driven Rabi oscillations in a ferromagnetic film | Bernstein, Nirel; Brik, Marina; Assouline, Benjamin; Yang, See-Hun; Capua, Amir | In this work we take the non-adiabatic interaction in a magnetic medium a step further by replacing the microwave electromagnetic field with an oscillatory spin current that is generated by the spin Hall effect. | Session 34: Spin Transfer and Spin Torques |
| 381 | Spin transfer torque driven by interfacial roughness and spin-orbital scattering | Shen, Pengtao; Mehraeen, M.; Zhang, Shulei | In this work, we theoretically investigate a spin-transfer torque effect in a ferromagnetic metal layer emanating from surface roughness and Rashba spin-orbit scattering in the presence of an in-plane charge current. | Session 34: Spin Transfer and Spin Torques |
| 382 | Planar Hall Driven Torque in a Ferromagnet/Nonmagnet/Ferromagnet System | Safranski, Christopher; XU, Jun-Wen; Kent, Andrew; Sun, Jonathan | We find the strength of this effect to be comparable to that of the spin Hall effect. | Session 34: Spin Transfer and Spin Torques |
| 383 | Real-time Hall-effect detection of current-induced magnetization dynamics in ferrimagnets | Sala, Giacomo; Krizakova, Viola; Grimaldi, Eva; Lambert, Charles-Henri; Devolder, Thibaut; Gambardella, Pietro | Here we present a novel concept to perform time-resolved measurements of Hall and transverse magnetoresistance signals. | Session 35: Spin Waves and Dynamics |
| 384 | Magneto-Optical Studies of Static and Dynamic Spin Alignment in Ferrimagnetic Thin Films | Liu, Hengzhou; Shoup, Jenae; Khadka, Durga; Thapaliya, Tilak; Huang, Sunxiang; Karaiskaj, Denis; Arena, Dario | We investigate a series of ferrimagnetic thin film samples consisting of (FeCo) 1-xGd x and Fe 1-xGd x where the Gd content was varied to modify magnetic parameters. | Session 35: Spin Waves and Dynamics |
| 385 | Surface properties influence on spin wave modes of ferromagnetic films | Arias, Rodrigo; Armijo, Ignacio | Thus, in order to relate films surface properties to the behavior of spin waves, we study theoretically, within the micro magnetic approximation, spin wave modes under obliquely applied magnetic fields to the film, since in this case the surface properties have a more clear influence in the spin wave properties. | Session 35: Spin Waves and Dynamics |
| 386 | Tuneable, Rare-Earth Free, Synthetic Ferrimagnets for Optical Switching | Scott, Jade; Hendren, William; Bowman, Robert; Hicken, Robert; Dabrowski, Maciej; Burn, David; Van der Laan, Gerrit; Frisk, Andreas; N’Diaye, Alpha | We have shown it is possible to engineer the magnetic properties of a series of compensating Ni 3Pt/Ir/Co SFM exhibiting perpendicular magnetic anisotropy (PMA). | Session 35: Spin Waves and Dynamics |
| 387 | Quasiparticle and Spin Dynamics in MnBi2Te4 using time-resolved magneto-optical Kerr spectroscopy. | Poore, Maxwell; Kim, Peter; Padmanabhan, Hari; Stoica, Vladimir; Lee, Seng Huat; Mao, Zhiqiang; Gopalan, Venkatraman; Averitt, Richard | In this presentation, we will delineate the field, fluence, and temperature dependence of the long time dynamics in this enigmatic antiferromagnetic topological insulator. | Session 35: Spin Waves and Dynamics |
| 388 | Interactions between spin wave and magnetic domain structures | Liu, Luqiao | In this talk, I will describe our recent experimental activities on investigating the mutual interactions between magnetic domain wall and spin wave, where magnetic domain walls manipulate the phase and magnitude of spin wave, and a strong spin wave in turn moves the position of magnetic domain walls [1]. | Session 35: Spin Waves and Dynamics |
| 389 | Wavelength-dependence of the spin-orbit optical properties of Au | Ortiz, Víctor; Coh, Sinisah; Wilson, Richard | We perform time-resolved Magneto optic Kerr effect (TR-MOKE) measurements on Au/Co heterostructures. | Session 35: Spin Waves and Dynamics |
| 390 | Ultrafast Magnetic Spectroscopy and Scattering Using Tabletop High Harmonic Sources | Johnsen, Peter; Ryan, Sinead; Gentry, Christian; Cating-Subramanian, Emma; Kapteyn, Henry; Murnane, Margaret | We present spectroscopy and scattering measurements of nanomagnetic materials using EUV high harmonic sources. | Session 35: Spin Waves and Dynamics |
| 391 | Optical spin-orbit torque and its application for spin-wave excitation | Choi, Gyung-Min | In this work, we report optical spin-orbit torques in heavy metal/ferromagnet heterostructures [1]. | Session 35: Spin Waves and Dynamics |
| 392 | Measurement of Current Induce Spin Orbit Torque effects using Optical Ferromagnetic Resonance | Grover, Bharat; Hazra, Binoy Krishna; Pal, Banabir; Ma, Tianping; Choudhury, Samiran; Jeon, Jae; Bernstein, Nirel; Capua, Amir; Parkin, Stuart | Here we discuss a novel optical technique called the optically detected ferromagnetic resonance (O-FMR) to measure the spin Hall angle (SHA) in a conventional Py|Pt bilayer system [2]. | Session 35: Spin Waves and Dynamics |
| 393 | Ferrimagnetic Spin Dynamics beyond Ferro- and Antiferro-magnetic Scenarios | Guo, Mingda; Zhang, Hantao; Cheng, Ran | By varying the ratio of sublattice spins, we demonstrate how spin dynamics in FIMs is intrinsically connected to its ferro- and antiferro-magnetic counterparts, and, more importantly, under what conditions FIMs can go beyond these scenarios. | Session 35: Spin Waves and Dynamics |
| 394 | Spin-polarised current manipulation of Bloch points | Beg, Marijan; Lang, Martin; Fangohr, Hans | In this work, using micromagnetic simulations, we explore if those magnetisation states can be manipulated using spin-polarised currents. | Session 36: Spin and Heat Transports |
| 395 | Dynamic nuclear spin polarization by the Edelstein effect at Bi(111) surfaces | Jiang, Zijian; Soghomonian, Victoria; Heremans, Jean | Dynamic nuclear spin polarization by the Edelstein effect at Bi(111) surfaces | Session 36: Spin and Heat Transports |
| 396 | Enhancement of nuclear spin-spin interactions by collective electronic modes | Carr, Stephen; Barrett, Eric; Snider, Charles; Feldman, Dmitri; Ramanathan, Chandrasekhar; Marston, Brad; Mitrovic, Vesna | We propose how electronic phases can also introduce feedback loops to nuclear spin behavior. | Session 36: Spin and Heat Transports |
| 397 | Angular momentum and pseudo angular momentum in magnetic materials | Streib, Simon | Based on Noether’s theorem, I demonstrate that the recently discussed orbital angular momenta of phonons [1,2] and magnons [3,4] are pseudo angular momenta. | Session 36: Spin and Heat Transports |
| 398 | Measurement of Phonon Angular Momentum via the Einstein-de Haas Effect, Fiber-Optic Interferometry, and a High-Q Oscillator | Sadam, Akhil; Dwyer, Matthew; Shoemaker, Devan; Passement, Raul; Hussain, Syed; Markert, John | We report initial design and use of capacitive and fiber-optic-interferometer systems to measure the predicted [1] macroscopic phonon angular momentum. | Session 36: Spin and Heat Transports |
| 399 | Effects of CoFe Alloy Composition on Non-Electronic Thermal Transport | Mohan, Ramya; Ortiz, Victor; Zhao, Ji-Cheng; Coh, Sinisa; Wilson, Richard | In this talk, I investigate the effect of composition on thermal transport. | Session 36: Spin and Heat Transports |
| 400 | Anomalous heat and spin transport induced by in-plane DM interaction in magnetic insulators | Park, Sungjoon; Nagaosa, Naoto; Yang, Bohm-Jung | We discuss anomalous heat and spin transport induced by in-plane Dzyaloshinskii-Moriya interaction (DMI) in two-dimensional magnetic insulators with collinear out-of-plane magnetic order. | Session 36: Spin and Heat Transports |
| 401 | Interplay of Magnetism and Phonons in Ultrafast Dynamics of Magnetic Topological Insulator MnBi2Te4 | Kim, Peter; Poore, Maxwell; Padmanabhan, Hari; Stoica, Vladimir; Lee, Seng Huat; Mao, Zhiqiang; Gopalan, Venkatraman; Averitt, Richard | We investigate the ultrafast dynamics of the antiferromagnetic topological insulator MnBi 2Te 4 using a combination of high-sensitivity transient reflectivity and time-resolved magneto-optical measurements. | Session 36: Spin and Heat Transports |
| 402 | Influence of Thermal Noise on the Frequency Resolution of a Sweep-Tuned Spectrum Analyzer | Elphick, Peter; Louis, Steven; Tyberkevych, Vasyl; Slavin, Andrei | Influence of Thermal Noise on the Frequency Resolution of a Sweep-Tuned Spectrum Analyzer | Session 36: Spin and Heat Transports |
| 403 | Quantitative temperature dependence of the Spin Seebeck effect in a mixed valent manganite | De, Avirup; Ghosh, Arup; MANDAL, RAJESH; Ogale, Satishchandra; Nair, Sunil | Here, we report on the temperature dependence of the longitudinal spin Seebeck effect (LSSE) in the mixed valent manganite La 0.7Ca 0.3MnO 3. | Session 36: Spin and Heat Transports |
| 404 | Coherent spin-phonon oscillations and demagnetization dynamics in the van der Waals ferromagnet CrI3 | Padmanabhan, Prashant; Buessen, Finn; Tutchton, Roxanne; Kwock, Kevin; Gilinsky, Samuel; Lee, Min-Cheol; McGuire, Michael; Singamaneni, Srinivasa; Yarotski, Dmitry; Paramekanti, Arun; Zhu, Jian-Xin; Prasankumar, Rohit | Here, we report on the non-equilibrium lattice and spin dynamics in CrI 3 across the magnetic phase transition. | Session 36: Spin and Heat Transports |
| 405 | Spin-dependent Seebeck and Nernst effects in a skyrmion ideal gas | Zadorozhnyi, Andrei; Dahnovsky, Yuri | From the numerical solution of the matrix Boltzmann equation for a nonequilibrium distribution function and the Lippmann-Schwinger equation for a T-matrix we find the strong nonlinear behaviors in the thermoelectric coefficients depending on skyrmion/vortex diameters and electron concentrations. | Session 36: Spin and Heat Transports |
| 406 | Thermal transport in yttrium iron garnet at very high magnetic fields | Ratkovski, Danilo; Balicas, Luis; Bangura, Alimami; Machado, Fernando; Rezende, Sergio | Here, we report measurements of the thermal conductivity in YIG under magnetic fields up to 31.4 T to increase the magnon energy gap, to suppress the magnon contribution and isolate that of the phonons relative to their behavior at zero-field. | Session 36: Spin and Heat Transports |
| 407 | Large zero-field Hall & Nernst effects and AMR in aligned MnBi / Bi composites | Wooten, Brandi; Vandaele, Koen; Boona, Steve; Heremans, Joseph P | Large zero-field Hall & Nernst effects and AMR in aligned MnBi / Bi composites | Session 36: Spin and Heat Transports |
| 408 | Spin current transport in EuIG thin films grown by pulsed laser deposition | Yuan, Wei; Liu, Haoyu; Ortiz, Victor; Shi, Jing | In this work, we investigate the spin transport in europium iron garnet (EuIG) thin films using spin Seebeck effect (SSE) and nonlocal transport. | Session 36: Spin and Heat Transports |
| 409 | Tuning Spin Current Injection at Ferromagnet-Nonmagnet Interfaces by Molecular Design | Wittmann, Angela; Schweicher, Guillaume; Broch, Katharina; Novak, Jiri; Lami, Vincent; Cornil, David; McNellis, Erik; Zadvorna, Olga; Venkateshvaran, Deepak; Takimiya, Kazuo; Geerts, Yves; Cornil, Jérôme; Vaynzof, Yana; Sinova, Jairo; Watanabe, Shun; Sirringhaus, Henning | Here, we use this technique to systematically study spin injection from a metallic ferromagnet permalloy, Ni 80Fe 20, into dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT), one of the best performing small molecule organic semiconductors to date. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 410 | Intrinsic spin dynamics in MAPbI3 single crystals with low defects | Yao, Yue; Sheffield, Matthew; Hewa Walpitage, Heshan; Brown Heft, Isaac; Liu, Ye; Ni, Zhenyi; Huang, Jinsong; Li, Yan | We measured time-resolved Kerr rotation (TRKR) on these high quality MAPbI3 single crystals, and showed that the spin lifetime improves by an order of magnitude, which suggests the intrinsic origin of this property. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 411 | First Principles Calculation of the Electronic Structure of V(TCNE)2 | Shi, Yueguang; Flatté, Michael | Here we explore the electronic structure using a plane-wave code VASP and XC functional Heyd-Scuseria-Ernzerhof (HSE06). | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 412 | Measuring charge carrier spin relaxation times in a π-conjugated polymer using pulsed electrically detected magnetic resonance in absence of magnetic polarization | Tennahewa, Taniya; Malissa, Hans; Hosseinzadeh, Sanaz; Atwood, Sabastian; Popli, Henna; Lupton, John; Boehme, Christoph | We report measurements of the spin relaxation times T 1 and T 2 of charge carrier spin states in the π-conjugated polymer SY-PPV at room temperature under low static magnetic field conditions (1mT ≤ B 0 ≤ 4mT), in near absence of spin polarization, using a pulsed electrically detected magnetic resonance (pEDMR) scheme, where spin-permutation symmetry dependent charge carrier recombination currents are detected after short, coherent (pulsed) Hahn-echo and inversion recovery pulse trains [1] are applied to organic light emitting diodes (OLED) devices. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 413 | Detection of multiphoton magnetic dipole transitions using spin-dependent charge carrier recombination currents and an amplitude-modulated continuous wave electrically detected magnetic resonance scheme | Atwood, Sabastian; Nahlawi, Adnan; Mkhitaryan, Vagharsh; Hosseinzadeh, Sanaz; Tennahewa, Taniya; Popli, Henna; Malissa, Hans; Lupton, John; Boehme, Christoph | We study nonlinear magnetic resonance phenomena such as the Bloch-Siegert shift and multiphoton magnetic dipole transitions [1] in the high-drive regime using electrically detected magnetic resonance (EDMR) spectroscopy of organic light emitting diodes with conductive polymers as active layers [2]. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 414 | In-Plane Dual-Gated Spin-Valve Device Based on the Zigzag Graphene Nanoribbon | Zhou, Min; Jin, Hao; Xing, Yanxia | Using the nonequilibrium Green’s function combined with density-functional theory, we study the transport properties of the zigzag graphene nanoribbon (ZGNR). | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 415 | First-principles calculation of charge carrier mobility in graphene with absorbed magnetic molecules using complex band structure | Brooks, Andrew; Liu, Shuanglong; Jiang, Tao; Le, Duy; Rahman, Talat; Cheng, Hai-Ping; Zhang, Xiaoguang | Our method determines the constant complex potential that must be added to a perfect crystal to induce the scattering effects seen in a crystal with defects, which we deduce from a series of complex band calculations. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 416 | Reduction of charge noise in shallow GaAs/AlGaAs heterostructures with insulated gates | Liang, Shuang; Nakamura, James; Gardner, Geoff; Manfra, Michael | We observe that GaAs/AlGaAs QPC devices with an Al2O3 dielectric between the metal gates and semiconductor exhibit significantly lower charge noise compared to devices with only Schottky gates and no dielectric. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 417 | Spin drift-diffusion for two-subband quantum wells | de Assis, Ismael; Raimondi, Roberto; Ferreira, Gerson | To this end, the study of the spin diffusion in two-dimensional electron gases (2DEGs) shows that when the Rashba and Dresselhaus spin-orbit couplings (SOC) are balanced, a persistent spin helix regime arises. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 418 | Electro-magnetic and mechanical properties of Ti3C2, and layer substituted mxenes. | Karn, Alok | Employing the pseudo-potential based density functional theory (DFT) with general gradient approximation (GGA), and GGA with coulomb exchange interaction correction (GGA + U), electro-magnetic and mechanical properties are calculated. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 419 | TDDFT for spin waves in two-dimensional systems: orbital-based approximations | Anderson, Matthew; Ullrich, Carsten | Instead, we use orbital-based approximations, most notably the Singwi-Tosi-Land-Sjolander (STLS) approach, generalized to systems with noncollinear spin. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 420 | Evidence of magnon generation in the fractional quantum Hall effect | Wang, Ying; Wan, Zhong; West, Ken; Baldwin, Kirk; Pfeiffer, Loren; Rokhinson, Leonid | In this work, we study spin relaxation at a filling factor 2/3, where the transition between polarized ( p) and unpolarized ( u) states can be controlled by electrostatic gates. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 421 | Raman Spectroscopy and Photoluminescence of Vanadium Tetracyanoethylene | Cheung, Hil; Chilcote, Michael; Cormode, Donley; Yusuf, Huma; Shi, Yueguang; Johnston-Halperin, Ezekiel; Flatté, Michael; Fuchs, Gregory | Here we use confocal microscopy, microfocused Raman spectroscopy, and ferromagnetic resonance to study V[TCNE] x≈2 and its ageing process. | Session 37: Spin in Organic Semiconductors and 2D Systems |
| 422 | Magnetism in V doped monolayer ZrS2 | Julieth, Greis; Tang, Zhao; Lopez-Candales, Gabe; Zhang, Peihong | In this work, we present density functional theory based electronic structure calculations of V doped monolayer ZrS 2. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 423 | Probing spin-polarized band structure of V-doped WSe2 | Duong, Dinh Loc; Jiang, Jinbao; Nguyen, Lan-Anh T.; DHAKAL, KRISHNA PRASAD; Lee, Young-Hee | Here, we report a giant Zeeman shift from the spin-polarized state in tungsten diselenide (WSe 2) doped with a small amount of vanadium atoms (~0.15%) by investigating resonant magnetotunneling spectroscopy of a vertical graphite/V-WSe 2/graphite heterojunction. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 424 | Probing zero-field splitting at spin-1 centers through dc magnetoresistance | McMillan, Stephen; Flatté, Michael | We extend this method to the spin-1 neutral divacancy in 4H-SiC, where measurements of zero-field splittings on the order of GHz are resolvable using applied fields in the range of 50 mT as long as the carrier occupation time at the divacancy exceeds 1 ns. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 425 | Scanning Tunneling Microscopy Studies of Fe on GaAs (110) Surface | Smith, Rebekah; Sahin, Cuneyt; Flatté, Michael; Gupta, Jay | Here we investigate the interaction of Fe adatoms with a host GaAs (110) surface using STM. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 426 | Spin relaxation in a silicon-based quantum dot qubit | Dobrovitski, Viatcheslav | In this talk we will discuss the relaxation mechanisms that govern the lifetime of a spin in the silicon quantum dot. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 427 | Spin-orbit interaction in InSb double quantum dots characterized using dispersive gate sensing | Han, Lin; Chan, Michael; De Jong, Damaz; Prosko, Christian; Li, Kongyi; Badawy, Ghada; Bakkers, Erik; Kouwenhoven, Leo; Koski, Jonne; Malinowski, Filip; Pfaff, Wolfgang | We experimentally investigate the consequences of a strong spin orbit interaction in double quantum dot defined in an InSb nanowire. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 428 | First-principles calculations of copper vacancy centers in zinc sulfide | Sahin, Cuneyt; Flatté, Michael | Here we calculate the electronic and structural properties of copper-vacancy complexes in zinc sulfide (ZnS) within the density functional theory. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 429 | Generalization of the linked cluster expansion computational method for arbitrary pulse sequences | Ouellet, Mathieu; Bassett, Danielle; Bassett, Lee | We present a diagrammatic computational approach to evaluate the central electronic spin problem in the presence of non-Markovian bath dynamics for arbitrary electron spin control sequences. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 430 | Radio-Frequency manipulation of strongly interacting electron-nuclear spin systems. | Zangara, Pablo; Pagliero, Daniela; Henshaw, Jacob; Ajoy, Ashok; Acosta, Rodolfo; Manson, Neil; Reimer, Jeffrey; Pines, Alexander; Meriles, Carlos | We use optical spin pumping of NV-hosting diamond to investigate the impact of a continuous radio-frequency (RF) drive on the generation of 13C spin polarization. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 431 | Quantum-impurity relaxometry of magnons in thin films: role of chirality | Rustagi, Avinash; Bertelli, Iacopo; van der Sar, Toeno; Upadhyaya, Pramey | Here, we present this theory highlighting the role of chirality and show that our theory 1) is in excellent quantitative agreement with recent NV-relaxometry experiments, and 2) predicts crossover between the two NV ESR relaxation rates as a key signature of the chiral coupling between the NV and magnons which is corroborated by new experiments on Nickel thin films interfaced with NV QI. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 432 | Nanoscale features of magnetic dopants in 2D systems with spin-orbit interaction | Rodrigues da Cruz, Adonai; Flatté, Michael | We present a theory of magnetic dopant in a two-dimensional electron gas model with Rashba-Bychkov and Dresselhaus spin-orbit couplings. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 433 | Spin-orbit mediated modulation of defect-phonon coupling in transition metal dichalcogenides | Chakraborty, Chitraleema; Ciccarino, Christopher; Narang, Prineha | Therefore, we present theoretical calculations and analysis of quantum defects in 2D materials. | Session 38: Spin in Semiconductors for Quantum Information Science |
| 434 | Electron ground state g-factor in embedded InGaAs quantum dots: An atomistic study | Kahraman, Mustafa; Bulutay, Ceyhun | We present atomistic computations within an empirical pseudopotential framework for the electron s-shell ground state g-tensor of embedded InGaAs quantum dots (QDs). | Session 38: Spin in Semiconductors for Quantum Information Science |
| 435 | Magnetic tunnel junctions and magnetic logic circuits driven by spin-orbit torques | Gambardella, Pietro | This talk will present time-resolved measurements of magnetization reversal driven by SOTs in 3-terminal MTJ devices and show how the combination of SOT, spin transfer torque, and voltage control of magnetic anisotropy leads to reproducible sub-ns magnetization reversal with a very narrow spread of the switching time distributions [1, 2]. | Session 39: Spin-Orbit Torques |
| 436 | Deterministic switching of a perpendicularly polarized magnet using unconventional spin-orbit torques in WTe2 | Kao, I hsuan; Muzzio, Ryan; Zhang, Hantao; Zhu, Menglin; Gobbo, Jacob; Weber, Daniel; Rao, Rahul; Li, Jiahan; Edgar, James; Goldberger, Joshua; Yan, Jiaqiang; Mandrus, David; Hwang, Jinwoo; Cheng, Ran; Kotach, Jyoti; Singh, Simranjeet | The exploitation of low-crystal symmetries in emergent quantum materials offers a unique approach to achieve spin-orbit torque with unconventional form 5,6. | Session 39: Spin-Orbit Torques |
| 437 | Effect of interfacial intermixing on spin-orbit torque in Co/Pt bilayers | Baez Flores, Giovanni; Belashchenko, Kirill | Using the first-principles non-equilibrium Green’s function technique [1] with supercell disorder averaging, we study the influence of interfacial intermixing on the spin-orbit torque in Co/Pt (111) bilayers. | Session 39: Spin-Orbit Torques |
| 438 | Voltage Controlled Spin-Orbit Torque Switching in W/CoFeB/MgO | Xu, Jinsong; Chien, Chia-Ling | In this work, we show voltage-controlled spin-orbit torque (SOT) switching in W/CoFeB/MgO films with perpendicular magnetic anisotropy (PMA) as administered through SrTiO 3 with a high dielectric constant. | Session 39: Spin-Orbit Torques |
| 439 | Strong, anisotropic in-plane and out-of-plane damping-like spin-orbit torque in epitaxial RuO2 | Bose, Arnab; Schreiber, Nathaniel; Nair, Hari; Zhang, Xiyue; Jain, Rakshit; Cham, Thow Min Jerald; Sun, Jiaxin; Muller, David; Buhrman, Robert; Schlom, Darrell; Ralph, Daniel | We study spin torques in RuO 2/Permalloy bilayers grown on TiO 2 substrates by second-harmonic Hall and spin-torque ferromagnetic resonance techniques [1]. | Session 39: Spin-Orbit Torques |
| 440 | Prediction of Purely Interfacial Giant Antidamping Spin-Orbit Torque induced by Skew Scattering | Veneri, Alessandro; Ferreira, Aires | In this talk, we present a new microscopic framework that accounts for intrinsic and extrinsic transport effects on equal footing and nonperturbatively, for the first time [2-3]. | Session 39: Spin-Orbit Torques |
| 441 | Spin-Orbit Torque Switching of Ferromagnets and Antiferromagnets | Chien, Chia-Ling | We discuss schemes that can achieve field-free SOT switching of FM with perpendicular magnetic anisotropy (PMA). | Session 39: Spin-Orbit Torques |
| 442 | Electric field induced exceptional points and mode attraction in a spin-orbit torque oscillator | Proskurin, Igor; Stamps, Robert | We consider resonant spin-orbit torque system in applied electric field and demonstrate that this system can realize exceptional points in the energy spectrum of the magnetic oscillator. | Session 39: Spin-Orbit Torques |
| 443 | Magneto-Optical Detection of Spin-Orbit Torque Phenomena Using Sagnac Interferometer microscope | Huang, Zhengjie; Vetter, Eric; Xiong, Yuzan; Zhang, Wei; Sun, Dali | Our work provides a promising continuous-wave magneto-optical approach to optically characterize the static spin Hall angle in a range of SOT devices without the AC current modulation. | Session 39: Spin-Orbit Torques |
| 444 | Spin transparency of Pt-based heavy metal/ferromagnet interface | Zhu, Lijun; Ralph, Daniel; Buhrman, Robert | In this talk, we will discuss the strategies developed to effectively minimize or even eliminate spin backflow and spin memory loss. | Session 39: Spin-Orbit Torques |
| 445 | Thermal stability and memristive spin-orbit torque switching at elevated temperature | Liao, Wei-Bang; Chen, Tian-Yue; Hsiao, Yu-Chan; Pai, Chi-Feng | In this work, through comprehensive temperature-dependent study on standard W/CoFeB/MgO and field-free CoFeB/W/CoFeB/MgO devices, the SOT efficacies of both are found to be invariant from 298 K to 353 K. 1 Δ is shown to degrade with increasing the temperature. | Session 39: Spin-Orbit Torques |
| 446 | One-dimensional antilocalization of electrons from spin disorder probed by nonlinear Hall effect | Wang, Yang; Wang, Yong; Wang, Tao; Wang, Xinhao; Ou, Yu-Sheng; Ji, Yi; Doty, Matthew; Law, Stephanie; Xiao, John | We propose a phenomenological model and suggest the enhancement of the NLHE below 50 K as evidence for strict one-dimensional antilocalization of electrons from spin disorder [3]. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 447 | Spin-orbit torques generated by low-symmetry ZrTe3 | Cham, Thow Min Jerald; Gupta, Vishakha; Vareskic, Bozo; Jain, Rakshit; BOSE, ARNAB; Ralph, Daniel | We report measurements of spin-orbit torques generated by ZrTe 3 and other low symmetry materials to understand the existence and strength of the out-of-plane anti-damping spin-orbit torques. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 448 | Charge-to-Spin Interconversion in Low-Symmetry Topological Materials | Vila Tusell, Marc; Hsu, Chuang-Han; Garcia, Jose; Benítez, L. Antonio; Waintal, Xavier; Valenzuela, Sergio; Pereira, Vitor; Roche, Stephan | We theoretically show that the reduced symmetry of strong spin-orbit coupling materials such as MoTe 2 or WTe 2 enables a new form of oblique spin Hall effect (SHE), characterized by large and robust in-plane spin polarizations. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 449 | Electric field control of spin-orbit torque switching in a spin-orbit ferromagnet single layer | Jiang, Miao; Asahara, Hirokatsu; Ohya, Shinobu; Tanaka, Masaaki | Here, we report a successful control of a full SOT switching via an external electric field in a single-crystalline ferromagnetic semiconductor (Ga,Mn)As with strong spin-orbit coupling 1,2. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 450 | Nonlinear spintronics with inversion symmetry breaking | He, Pan | Here, we explore the emerging nonlinear spintronic phenomena in the inversion-asymmetric nonmagnetic materials with SOC. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 451 | A quantum theory of the nonlinear Hall effect | Du, Zongzheng; Wang, Chunming; Sun, Hai-Peng; Lu, Haizhou; Xie, X. C. | We present both qualitative and quantitative differences between the quantum theory and the semiclassical theories. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 452 | Probing charge-to-spin and spin-to-charge transduction in heterostructures of 2D van der Waals magnets | Gupta, Vishakha; Cham, Thow Min Jerald; Vareskic, Bozo; Ralph, Daniel | In this work, we probe the charge-to-spin conversion in heterostructures of 2D magnetic insulators with heavy metals. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 453 | Optical readout of spin-orbit torque acting on magnetic thin films | Luo, Yunqiu (Kelly); Gupta, Vishakha; Karimeddiny, Saba; Cham, Thow Min Jerald; Mak, Kin Fai; Shan, Jie; Ralph, Daniel | In this talk, I will discuss recent progress in using magneto-optic Kerr effect (MOKE) microscopy technique to probe SOT manipulation of both conventional metallic ferromagnets and van der Waals magnets. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 454 | Spin and charge interconversion probed via spin torque ferromagnetic resonance and spin pumping in the archetypal Dirac semimetal Cd3As2 | Yanez, Wilson; Ou, Yongxi; Xiao, Run; Held, Jacob; Koo, Jahyun; Pillsbury, Timothy; Rable, Jeffrey; Xiao, Di; Gonzalez, Enrique; Richardella, Anthony; Mkhoyan, K.; Yan, Binghai; Samarth, Nitin | We report spin-to-charge and charge-to-spin conversion at room temperature in heterostructures of the archetypal Dirac semimetal Cd 3As 2 and Ni 80Fe 20, detected by both spin torque ferromagnetic resonance and ferromagnetic driven spin pumping. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 455 | Ultrafast reorientation of the Néel vector in antiferromagnetic Dirac semimetals | Ono, Atsushi; Ishihara, Sumio | We propose a theoretical framework for the ultrafast dynamics in AFM Dirac semimetals, taking not only localized magnetic moments but also itinerant electrons into account. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 456 | Spin-orbit torque switching in sputtered BiTe driven by spin Hall effect | Chen, Tian-Yue; Peng, Cheng-Wei; Liao, Wei-Bang; Tsai, Tsung-Yu; Yen, Hung-Wei; Pai, Chi-Feng | In this work, we use conventional magnetron sputtering to deposit the non-epitaxial BiTe/ferromagnet heterostructures. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 457 | Spin-phonon relaxation of Silicene and Germanene from first-principles density-matrix dynamics | Takenaka, Hiroyuki; Xu, Junqing; Sundararaman, Ravishankar; Ping, Yuan | Here, we investigate spin relaxation of silicene and germanene with ab-initio density matrix dynamics with SOC and electron-phonon couplings. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 458 | Layer- and Gate-tunable Spin-Orbit Coupling in a 2D semiconductor probed by Shubnikov-de Haas Oscillations. | Shcherbakov, Dmitry; Stepanov, Petr; Memaran, Shahriar; Wang, Yaxian; Xin, Yan; Yang, Jiawei; Wei, Kaya; Baumbach, Ryan; Zheng, Wenkai; Watanabe, Kenji; Taniguchi, Takashi; Bockrath, Marc; Smirnov, Dmitry; Siegrist, Theo; Windl, Wolfgang; Balicas, Luis; Lau, Chun Ning | We utilize tunability of ultrathin field-effect transistors combined with high mobility of indium selenide (InSe) to demonstrate SOC and to vary it over an unprecendently wide range by breaking the inversion symmetry with out-of-plane electric field. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 459 | Spin Nernst effect in a topological insulator Bi2Se3 | Jain, Rakshit; BOSE, ARNAB; Richardella, Anthony; Pillsbury, Timothy; Ou, Yongxi; Samarth, Nitin; Buhrman, Robert; Ralph, Daniel | We study bilayers made from thin films of the topological insulator Bi 2Se 3 with CoFeB, apply a thermal gradient using an adjacent heater, and measure voltage signals arising from spin currents via the inverse spin Hall effect. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 460 | Spin textures in a silver sulfide proustite | Koyama, Sean; Rondinelli, James | In this talk, I will present a first-principles electronic structure study of proustite, a polar Ag 3AsS 3 sulfide, and related A 3BQ 3 chalcogenides. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 461 | Observation a Chiral Electronic Continuum in the Giant Rashba Spin-Split System, BiTeI | Lee, Alexander; Peng, Bo; Du, Kai; Kung, Hsiang-Hsi; Monserrat, Bartomeu; Cheong, Sang-Wook; Blumberg, Girsh | In our study, we used polarization-resolved Raman scattering to probe the Rashba continuum. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 462 | First-principles study on Giant Hidden Rashba Effects in novel Two-Dimensional Si2Bi2 | Lee, Seungjun; Kwon, Young-Kyun | Here, through first-principles density functional theory and model Hamiltonian calculations, we investigate giant spin-layer locking observed in novel two-dimensional materials Si 2Bi 2. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 463 | Non-orthogonal spin-momentum locking in strongly spin-orbit coupled materials | Chiu, Wei-Chi; Hakioglu, Tugrul; Markiewicz, Robert; Singh, Bahadur; Bansil, Arun | [1] Here, we discuss the non-magnetic impurity scattering as a candidate mechanism to this isotropic NOSML state. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 464 | Nonequilibrium Noise Measurement of a spin current induced by the spin Seebeck effect | Zhao, Xuanhan; Chen, Liyang; Natelson, Douglas; Liu, Changjiang; Hong, Deshun; Bhattacharya, Anand | Nonequilibrium Noise Measurement of a spin current induced by the spin Seebeck effect | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 465 | Design principles for selecting interfaces between Rashba compound and a ferroelectric film that would reverse spin texture | Zhang, Xiaoli; Mera Acosta, Carlos; Zunger, Alex | We find the minimal design principles leading to R spin texture reversal through ferroelectric switching. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 466 | Inverse design of co-functionaity: Discovery of Rashba materials that are also topological insulators and Rashba materials that are also ferroelectrics | Mera Acosta, Carlos; Fazzio, Adalberto; Dalpian, Gustavo; Zunger, Alex | We demonstrate design of two types of cross fuctionalities involving co existence of the Rashba effect with “effect X”=either topology or ferroelectricity. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 467 | Magnetic Hamiltonian Engineering by Light-Matter Interaction | Lin, Zexun; Rodriguez-vega, Martin; Fiete, Gregory | In this work, we explore the flexibility and magnitude of Hamiltonian engineering by photon-phonon coupling. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 468 | Spin texture and Berry phase of heavy-mass holes confined in SiGe two-dimensional quantum well system under the coexistence of Rashba and Dresselhaus spin-orbit interactions | Tojo, Tatsuki; Takeda, Kyozaburo | We extend DKK’s k.p perturbation approach by take into account the R- and D-relating SOIs up to the 2nd-order terms crossing with k.p term, and computationally explore ST and BP. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 469 | Orbital Magnetoelectric effect in px-py Zigzag nanoribbon. | Cysne, Tarik; Canonico, Luis; Guimarães, Filipe; Muniz, Roberto; Rappoport, Tatiana | Motivated by the recent synthetization of the monolayer of bismuthene on SiC substrate, which can be effectively described by a simple two orbitals model with strong atomic spin-orbit coupling, we study the spin and orbital angular momentum response in px-py zigzag nanoribbon to an applied longitudinal electric field. | Session 40: Spin-Orbitronics in Semiconductor, Topological, and 2D Materials |
| 470 | Operating ferrimagnet as terahertz antiferromagnetic spin-torque oscillator | Zhang, Hantao; Guo, Mingda; Cheng, Ran | We find that anti-damping torques can trigger spontaneous oscillation of the exchange mode in FIMs, resembling the terahertz AFM spin dynamics. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 471 | Terahertz spin-to-charge conversion by interfacial skew scattering in magnetic metal bilayers | Gueckstock, Oliver; Nadvornik, Lukas; Gradhand, Martin; Seifert, Tom; Bierhance, Genaro; Wolf, Martin; Vafaee, Mehran; Cramer, Joel; Woltersdorf, Georg; Mertig, Ingrid; Jakob, Gerhard; Klaeui, Mathias; Kampfrath, Tobias | Here, we study ultrafast S2C at interfaces by terahertz (THz) emission spectroscopy [3-4] in a model system: F|N bilayers consisting of thin metal films of a ferromagnetic layer F and nonmagnetic layer N with strong and weak spin-orbit coupling (SOC). | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 472 | Terahertz spin dynamics in antiferromagnetic Mn2Au | Behovits, Yannic; Chekhov, Alexander; Bodnar, Stanislav; Jourdan, Martin; Klaeui, Mathias; Kampfrath, Tobias | Here, we employ a THz-pump optical-probe setup to investigate spin dynamics in Mn 2Au thin films in the small-perturbation regime. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 473 | Terahertz Magnon Polaritons in YFeO3 in Pulsed High Magnetic Fields | Baydin, Andrey; Hayashida, Kenji; Marquez Peraca, Nicolas; Makihara, Takuma; Tay, Fuyang; Li, Xinwei; Ma, Xiaoxuan; Jin, Zuanming; Ren, Wei; Ma, Guohong; Noe, Gary; Katayama, Ikufumi; Takeda, Jun; Nojiri, Hiroyuki; Turchinovich, Dmitry; Cao, Shixun; Bamba, Motoaki; Kono, Junichiro | We developed a microscopic theoretical model that explains the data without any fitting parameters. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 474 | Same driving force for laser-induced ultrafast demagnetization and THz spin transport | Rouzegar, Reza; Brandt, Liane; Nadvornik, Lukas; Chekhov, Alexander; Reiss, David; Gueckstock, Oliver; Wolf, Martin; Seifert, Tom; brouwer, Piet; Woltersdorf, Georg; Kampfrath, Tobias | We investigate the driving force of two phenomena that follow femtosecond laser excitation: ultrafast magnetization quenching and spin transport. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 475 | Ultrafast demagnetization of ferromagnetic iron following optical vs terahertz excitation | Chekhov, Alexander; Behovits, Yannic; Heitz, Julius; Denker, Christian; Reiß, David; Wolf, Martin; Weinelt, Martin; brouwer, Piet; Muenzenberg, Markus; Kampfrath, Tobias | To tackle this issue, we perform a direct comparison of magnetization dynamics of an iron thin film triggered by an ultrashort optical pump pulse (photon energy 3 eV, strongly nonthermal perturbation) and a terahertz pump pulse (4 meV, quasi-thermal perturbation) [2]. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 476 | Ultrafast demagnetization times in ferromagnetic alloys | Zhang, Guoping; Bai, Yihua; George, Thomas | In this presentation, we take L10-FeNi as an example and employ the time-dependent Liouville density-matrix functional theory to compute laser-induced ultrafast demagnetization. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 477 | Effect of demagnetization factors on spin current transport | WU, PO-HSUN; Chan, Ying-Ting; Hung, Tzu-Chao; Zhang, Yi-Hui; Qu, Danru; Chuang, Tien-Ming; Chien, C. L.; Huang, Ssu Yen | In this work [1], we demonstrated the strong influence of the demagnetizing field on the spin current transports, including the spin Seebeck effect, spin Hall magnetoresistance, and planar Hall resistance, in Pt/YIG. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 478 | Terahertz photoconductivity and photocarrier dynamics in graphene–mesoporous silicon nanocomposites | Jubgang Fandio, Defi Junior | We investigate the photocarrier and charge transport dynamics in graphene-mesoporous silicon nanocomposites using optical pump-terahertz probe technique. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 479 | Spin-current across the metamagnetic transition in FeRh films as measured with THz emission spectroscopy | Lv, Yinchuan; Saglam, Hilal; shim, Soho; Gibbons, Jonathan; Hoffmann, Axel; Mason, Nadya; Mahmood, Fahad | Here we perform THz emission spectroscopy on thin films of FeRh, which is well known to undergo an antiferromagnetic to ferromagnetic phase transition around room temperature. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 480 | Terahertz Emission from Inverse Spin Hall Effect in β-W | Romero, Ralph; Budhani, Ramesh; Armitage, Norman | Here we demonstrate THz emission from a magnetic/heavy metal bilayer of CoFe/β-W deposited on a magnetic spinel MgAl 2O 4 substrate. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 481 | Electrically detected spin currents generated by sub-terahertz microwaves | Shi, Jing; Li, Junxue; Wilson, C; Lohmann, Mark; Cheng, Ran; Kavand, Marzieh; Yuan, Wei; Aldosary, Mohammed; Agladze, Nikolay; Wei, Peng | At the AFM resonance, we observed a sign change in the ISHE voltage at ~45 K as the temperature is varied. | Session 41: Terahertz Spintronics and Demagnetization Dynamics |
| 482 | Defect Chemistry and Dopability of Telluride Diamond-Like Semiconductors and Ordered Vacancy Compounds for Thermoelectric Applications | Gomes, Lidia; Qu, Jiaxing; Adamczyk, Jesse; Toberer, Eric; Ertekin, Elif | We consider the I BIIITe 2 with I B=(Cu,Ag), III=(In,Ga) and Cu 2(Zn,Cd,Hg)(Si,Ge,Sn)Te 4 material space, and use first-principles methods and experimental phase boundary mapping to comprehensively assess dopabilities in this search space. | Session 42: Thermal and Electronic Properties |
| 483 | How do defects limit the ultrahigh thermal conductivity of BAs? A first principles study | Fava, Mauro; Protik, Nakib; Li, Chunhua; Ravichandran, Navaneetha Krishnan; Carrete, Jesus; van Roekeghem, Ambroise; Madsen, Georg; Mingo, Natalio; Broido, David | Using first principles calculations, we determine the thermal conductivity reduction induced by different group IV impurities in BAs as a function of concentration and charge state. | Session 42: Thermal and Electronic Properties |
| 484 | Effect of Stress-Strain Profile on Bulk Thermal Conductivity | Gunay, Ahmet; Shiomi, Junichiro | After obtaining the mechanical properties, we perform laser flash analysis and differential scanning calorimetry to obtain the bulk thermal conductivity of the samples. | Session 42: Thermal and Electronic Properties |
| 485 | Far-infrared studies of shallow thermal donors and dilute impurities in high-purity silicon | Martinez, Vladimir; Tanner, David; adhikari, rana; Arai, Koji; Brooks, Aidan; Wipf, Christopher | Using the results of our transmission spectra, we can determine the type of impurities in the sample and their concentrations. | Session 42: Thermal and Electronic Properties |
| 486 | Adiabatic and nonadiabatic contributions to the cross section for carrier capture by defects in semiconductors | Li, Guanzhi; Yu, Yue; Nichols, Laura; O’Hara, Andrew; Barmparis, Georgios; Pantelides, Sokrates; Zhang, Xiaoguang | Here we report the development of a faster and more accurate time-domain integration method for calculations of capture cross sections that are converged with respect to the number of phonon modes. | Session 42: Thermal and Electronic Properties |
| 487 | Piezoresistance in nano-silicon | Rowe, Alistair; Arscott, Steve; McCallum, Jeffrey; Johnson, Brett; Lew, Christopher; Li, Heng; Thayil, Abel; Filoche, Marcel | Piezoresistance in nano-silicon | Session 42: Thermal and Electronic Properties |
| 488 | Band Structure Modifications of Ag2Se by Sulfur: A Density Functional Theory Study | Makeev, Maxim; Sahu, Ayaskanta; Rajput, Nav Nidhi | In this work, the band-structure analysis of crystalline Ag 2Se with and without substitutional sulfur atoms is performed using density functional theory. | Session 42: Thermal and Electronic Properties |
| 489 | Anomalous Hopping Conduction Discovered in N-Type a-Si | Western, Brianna; Harcrow, Michael; Syllaios, Athanasios; Lopes, Vincent; Littler, Christopher | This work presents measurements of dark conductivity in amorphous silicon doped with high amounts of phosphine ([PH 3]/[SiH 4] = 0.01 – 0.03) and grown with argon dilution that have yielded an anomalous hopping conduction mechanism: ln σ ∝ 1/T p where p ≈ 0.75, determined by Resistance Curve Derivative Analysis. | Session 42: Thermal and Electronic Properties |
| 490 | Anomalous Hopping and Multi-Phonon Hopping Charge Transport in Amorphous Silicon-Germanium Alloy Thin Films | Stolik Valor, Lis; Eslamisaray, Mohammad; Kakalios, James | We describe studies that find that the electronic mobility gap model traditionally employed to describe charge transport in a-Si:H is not the best description for a-Si xGe 1-x:H alloys. | Session 42: Thermal and Electronic Properties |
| 491 | Formation and Diffusion of Charged and Neural Defect States in Crystalline GeSe for Synaptic Electronics | Bursi, Luca; Chouhan, Rajiv K.; Catellani, Alessandra; Calzolari, Arrigo | Here by means of state-of-the-art high-throughput simulations workflows for first principles condensed matter simulations, as implemented in the AiiDA infrastructure for the Quantum ESPRESSO, we study charged and neural defect states in GeSe chalcogenide with particular attention to their formation energies and diffusion barriers. | Session 42: Thermal and Electronic Properties |
| 492 | Scanning Tunneling Spectroscopy of Cubic Boron Arsenide Single Crystals | Lee, Hwijong; Gamage, Geethal Amila; Lyons, John; Tian, Fei; Smith, Brandon; Glaser, Evan; Ren, Zhifeng; Shi, Li | Here, we report scanning tunneling spectroscopy (STS) measurements of the electronic structures of as-grown and in situ cleaved BAs single crystal surfaces. | Session 42: Thermal and Electronic Properties |
| 493 | Copper Defects and Charge Collection in Cadmium Telluride Photovoltaic Devices | Walker, Trumann; Nietzold, Tara; Mohan-Kumar, Niranjana; Stückelberger, Michael; Colegrove, Eric; Lai, Barry; Bertoni, Mariana | Here, we use synchrotron X-ray microscopy to probe the nanoscale distribution of Cu and correlate it to local charge collection in CdTe photovoltaic devices. | Session 42: Thermal and Electronic Properties |
| 494 | Electronic and magnetic properties of pristine and lanthanide element doped yttrium iron garnet | KC, Santosh; Paudyal, Durga | Using first-principles electronic structure calculations, we investigate these properties in yttrium iron garnet (YIG). | Session 42: Thermal and Electronic Properties |
| 495 | Autonomous quantum absorption refrigerators | Jussiau, Etienne; Kizhakkumpurath Manikandan, Sreenath; Jordan, Andrew | We propose a new design for a quantum absorption refrigerator using resonant-tunneling quantum dots. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 496 | Origin of anomalous temperature dependence of Nernst effect in narrow-gap semiconductors | Masuki, Ryota; Nomoto, Takuya; Arita, Ryotaro | Based on the Boltzmann transport theory, we study the origin of the anomalous temperature dependence of the Nernst coefficient ( ν) due to the phonon-drag mechanism. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 497 | Nonreciprocal transport in Landau-Zener problem | Kitamura, Sota; Nagaosa, Naoto; Morimoto, Takahiro | In this talk, we report two types of new nonreciprocal transport peculiar to time-reversal symmetric insulating systems. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 498 | Origin of micron-scale propagation lengths of heat-carrying acoustic excitations in amorphous silicon | Kim, Taeyong; Moon, Jaeyun; Minnich, Austin | Here, we report measurements of the frequency-dependent mean free path in amorphous silicon thin films from $\sim 0.1-3$ THz and over temperatures from 60 – 315 K using picosecond acoustics and transient grating spectroscopy. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 499 | Photoluminescence mapping and time-domain thermo-photoluminescence for rapid imaging and measurement of thermal conductivity of boron arsenide | Yue, Shuai; Gamage, Geethal Amila; Mohebinia, Mohammadjavad; Mayerich, David; Talari, Vishal; Deng, Yu; Tian, Fei; DAI, SHENYU; Sun, Haoran; Hadjiev, Viktor G.; Zhang, Wei; Feng, Guoying; Hu, Jonathan; Liu, Dong; Wang, Zhiming; Ren, Zhifeng; Bao, Jiming | After we experimentally established 1.82 eV as the indirect bandgap of BAs and observed room-temperature band-edge photoluminescence, we developed two new optical techniques that can provide rapid and non-destructive characterization of κ with little sample preparation: photoluminescence mapping and time-domain thermo-photoluminescence (TDTP). | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 500 | Magnetic cooling of electrons to 311 μK in a cryo-free dilution refrigerator | Samani, Mohammad; Scheller, Christian; Yurttagul, Nikolai; Grigoras, Kestutis; Sharifi Sedeh, Omid; Jones, Alexander; Haley, Richard; Prance, Jonathan; Prunnila, Mika; Zumbuhl, Dominik | Here, we employ on- and off-chip cooling and reduce the heat leak during demagnetization by turning off the pulsed tube. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 501 | Enhanced thermal Hall effect in nearly ferroelectric insulators | Chen, Jing-Yuan; Kivelson, Steven; Sun, Xiao-Qi | In the context of recent experimental observations of an unexpectedly large thermal Hall conductivity, κ H, in insulating La2CuO4 (LCO) and SrTiO3 (STO), we theoretically explore conditions under which acoustic phonons can give rise to such a large κH. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 502 | Learning electron scattering parameters by analyzing thermoelectric data | Jayaraj, Anooja; Siloi, Ilaria; Fornari, Marco; Buongiorno Nardelli, Marco | Here we investigate the role of the CRTA in the electronic properties of well-known TE materials, by considering scattering models with energy and temperature dependence. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 503 | Exciton condensation in 2D WSe2/InSe electric double layers | Holler, Brian; Kumar, Arvind Shankar; Gao, Xuan | In this study we plan to illustrate the presence of interlayer excitons electrically formed between stacked layers of WSe 2 and InSe. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 504 | Effect of the polar distortion on the thermoelectric properties of GeTe | Sheibani, Aida; Paillard, Charles; Pandit, Abhyian; Haleoot, Raad; Bellaiche, Laurent; Hamad, Bothina | In particular, we proposed that high thermoelectric performances could be achieved by growing epitaxial GeTe films that are bi-axially compressed in the directions perpendicular to the polar axis in order to achieve larger polarization states. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 505 | Thermopower and Electrical Transport in Ag2-δTe under Magnetic Field | Leahy, Ian; Siegfried, Peter; Schnyders, Harold; Husmann, Anke; Lee, Minhyea | We investigate the magnetotransport and thermopower properties in a series of the silver deficient semiconductors Ag 2-δTe (δ = 0, 2×10 -4, and 7×10 -4). | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 506 | Thermal transport from nanostructured heat sources on diamond probed using coherent extreme ultraviolet beams | McBennett, Brendan; Knobloch, Joshua; Abad, Begoña; Frazer, Travis; Beardo, Albert; Sendra, Lluc; Camacho, Juan; Bafaluy, Javier; Chao, Weilun; falcone, roger; Hernandez Charpak, Jorge Nicolas; Kapteyn, Henry; Alvarez, Xavier; Murnane, Margaret | Here, we use short wavelength (~30nm), ultrafast (~10fs) extreme ultraviolet (EUV) beams to nondestructively probe thermal transport away from nanoscale heat sources on diamond. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 507 | Unusual anisotropic thermal expansion in multilayer SnSe leads to positive-to-negative crossover of Poisson’s ratio | Zhang, Yu-Tian; Zhang, Rui-Zi; Liu, Jian; Zhang, Yu-Yang; Du, Shixuan; Pantelides, Sokrates | Unusual anisotropic thermal expansion in multilayer SnSe leads to positive-to-negative crossover of Poisson’s ratio | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 508 | Predictive theory of charge transport in perovskite oxides | Zhou, Jin-Jian; Bernardi, Marco | Using ab initio approaches we recently developed [1], we address these challenges and compute the phonon-limited transport properties in a wide range of perovskite oxides, including KTaO 3, BaZrO 3, BaHfO 3, SrTiO 3, BaSnO 3, and SrSnO 3. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 509 | Towards Ponderomotive Trapping and Guiding Charge Carriers in Semiconductors | Daw, Damon; Lozovoi, Artur; Wang, Yunhan; Chen, YunHeng; Lakra, Ayesha; Doherty, Marcus; Meriles, Carlos | Here, we present a novel, non-invasive method for spatially confining and measuring transport characteristics of charge carriers in covalent semiconductors using ponderomotive potentials similar to those used in traditional ion trapping experiments. | Session 43: Thermodynamic and Transport Properties (not QHE, FQHE) |
| 510 | Manipulating Impurities and Defects During Semiconductor Epitaxy with Light | Alberi, Kirstin | This talk will focus on the use of light as an independent and tunable energy source that can be applied to modify growth processes. | Session 44: Thin Films and Nanostructures |
| 511 | Investigating Cation Disorder in ZnGeP2 Thin Films Using Resonant Energy X-ray Diffraction | Schnepf, Rekha; Levy-Wendt, Ben; Tellekamp, Marshall; Ortiz, Brenden; Melamed, Celeste; Schelhas, Laura; Stone, Kevin; Toney, Michael; Toberer, Eric; Tamboli, Adele | In this work, we present two methods used to quantify cation disorder in ZnGeP 2 thin films: a stretching parameter calculated from lattice constants, c/a, and an order parameter determined from site occupancies, S. | Session 44: Thin Films and Nanostructures |
| 512 | Self-trapped exciton assisted energy transfer from the band edge to Mn dopant in Mn2+-doped 2D organometal halide perovskites | Sarang, Som; Delmas, William; Cherrette, Vivien; Naghadeh, Sara; Zhang, Jin | Organo-metal halide perovskites (OMHPs) are relatively new entrants in the arena of doping as a means of tuning semiconductor functionalities, although initial efforts have demonstrated improved quantum yield and broadband emission in Mn-doped OMHPs. | Session 44: Thin Films and Nanostructures |
| 513 | Sub-10 meV Light Emission from Chemically Controlled Donor-Acceptor Defect Pairs in Solution-Processed 2D Hybrid Perovskites | Sanni, Adedayo; Rury, Aaron | In this presentation we highlight a materials synthesis method that controls light emission below the optical gap from defects in hybrid lead iodide self-assembled quantum wells (SAQWs). | Session 44: Thin Films and Nanostructures |
| 514 | Semiconductor Quantum Dots: Dopant versus Free Carrier Profiles | Zimmerman, Alexandra; Fedele, Grace; Walrath, Jenna; Greenhill, Christian; Del Gaudio, Davide; Goldman, Rachel | In this work, we are investigating the locations of the extra electrons and their parent donors using a combination of experimental and computational methods, namely local-electrode atom-probe tomography and self-consistent Schrödinger-Poisson simulations based on effective mass theory. | Session 44: Thin Films and Nanostructures |
| 515 | "Point Defects in Lead Sulfide: A first-principles study" N. Mishra and G. Makov Dept. of Materials Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel | Mishra, Neeraj; Makov, Guy | The energetic and electronic properties of point defects in lead sulfide were studied using first-principles methods. | Session 44: Thin Films and Nanostructures |
| 516 | Exciton–phonon coupling in resonant Raman scattering: intrinsic attributes and extrinsic tunability in ZnTe of different dimensionalities | Yi, Yingyan; Marmon, Jason; Chen, Yuanping; Zhang, Fan; Sheng, Tao; Wijewarnasuriya, Priyalal; Zhang, Haitao; Zhang, Yong | We show that in ZnTe, in contrast to the previous reports, R21 exhibits a much larger intrinsic value and minimal change from bulk to 30 nm nanowire, indicating previously reported size dependences were likely affected by extrinsic mechanisms. | Session 44: Thin Films and Nanostructures |
| 517 | Emission from localized states in few-layer InSe (Part1: Theory) | Song, Kok Wee; Magorrian, Samuel; Falko, Vladimir | With this model, we find that the scattering processes between different quantized modes due to quantum confinement play a crucial role in forming the hole-acceptor bound pair. | Session 44: Thin Films and Nanostructures |
| 518 | Emission from localized states in few-layer InSe: Experiment | Lu, Zhengguang; Song, Kok Wee; Shcherbakov, Dmitry; Jiang, Yuxuan; Memaran, Shahriar; Zheng, Wenkai; Watanabe, Kenji; Taniguchi, Takashi; Magorrian, Samuel; Balicas, Luis; Lau, Chun Ning; Falko, Vladimir; Smirnov, Dmitry | We show that the emission from both excitons and localized states can be controlled by varying carrier density, electric or magnetic field. | Session 44: Thin Films and Nanostructures |
| 519 | Carrier localization in quaternary Ga1-xMnxAs1-yPy ferromagnetic semiconductor films | Riney, Logan; Dong, Sining; Liu, Xinyu; Guo, Lei; Zheng, Ren-Kui; Wang, Jiashu; Li, Xiang; Bac, Seul-Ki; Kossut, Jacek; Dobrowolska, Malgorzata; Furdyna, J; Assaf, Badih | By comparing the total hole concentrations obtained from the number of acceptors and compensating donors to the Hall carrier density, we find that the number of itinerant holes is significantly less that the total hole concentration. | Session 44: Thin Films and Nanostructures |
| 520 | Surface electronic structure of H/InAs(001)-4×2 studied by synchrotron radiation | Chuang, Chien Wen; Cheng, Yi-Ting; Pi, Tun-Wen; Chainani, Ashish | We report a high-resolution synchrotron radiation (hv = 40 – 160 eV) photoemission study to clarify effects of hydrogenation on the electronic structure of undoped, n-type, and p-type InAs(001). | Session 44: Thin Films and Nanostructures |
| 521 | Structural and Electronic Properties of 3×1 Si (Ge)-Terminated Diamond (100) Surfaces | Gomez, Hector; Groves, Michael; Neupane, Mahesh; Ruzmetov, Dmitry; Birdwell, A.; Weil, James; Shah, Pankaj; Ivanov, Tony | Motivated by this, we perform a DFT study into clean and oxidized variants of the reconstructed Si (Ge)-terminated diamond (100) surfaces. | Session 44: Thin Films and Nanostructures |
| 522 | Band Gap Engineering of host GaAs through deposited PbS quantum dots | Bhowmick, Mithun; Singh, Akhilesh; Barik, Puspendu; Xi, Haowen; Ullrich, Bruno | In this talk, we report photoluminescence studies in solvent deposited PbS quantum dots on undoped GaAs substrates. | Session 44: Thin Films and Nanostructures |
| 523 | Exploring Nanocrystal Nucleation Mechanisms with Liquid Cell Transmission Electron Microscopy | Woehl, Taylor | In this talk, I will discuss development of a liquid cell transmission electron microscopy (LC-TEM) method for quantifying important parameters of heterogeneous nucleation, including supersaturation ratio and interfacial energy, and our efforts to utilize this approach to visualize nanoscale variations in nucleation kinetics at a solid-liquid interface. | Session 45: Viewing the Future, with Electrons |
| 524 | Combined-Extreme In-Situ Experiments by Redesign of a Transmission Electron Microscope Pole-Piece Gap | Jungjohann, Katherine; Milne, Zachary; Hattar, Khalid | Combined-Extreme In-Situ Experiments by Redesign of a Transmission Electron Microscope Pole-Piece Gap | Session 45: Viewing the Future, with Electrons |
| 525 | Theoretical Limits of Atomic Resolution Electron Tomography: New Bounds for Resolution, Object Size, and Dose | Hovden, Robert; Hovden, Suk; Ercius, Peter; Yalisove, Reed | We present a theoretical foundation for aberration-corrected electron tomography by establishing analytic descriptions for resolution, sampling, object size, and dose—with direct analogy to the Crowther criterion. | Session 45: Viewing the Future, with Electrons |
| 526 | Vibrational spectroscopy in the electron microscope | Krivanek, Ondrej; Dellby, Niklas; Meyer, Chris; Mittelberger, Andreas; Lovejoy, Tracy | Vibrational spectroscopy in the electron microscope | Session 45: Viewing the Future, with Electrons |
| 527 | In Situ Liquid Cell Transmission Electron Microscopy Imaging of Nanocrystal Transformations | Zheng, Haimei | In this talk, I will show examples on the structural transformations of nanocrystals during growth and self-assembly revealed by in situ liquid cell TEM. | Session 45: Viewing the Future, with Electrons |