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Articles 61 - 77 of 77
Full-Text Articles in Physics
Van Der Waals Multiferroic Tunnel Junctions, Y. Su, X. Li, M. Zhu, J. Zhang, L. You, And E. Y. Tsymbal
Van Der Waals Multiferroic Tunnel Junctions, Y. Su, X. Li, M. Zhu, J. Zhang, L. You, And E. Y. Tsymbal
Evgeny Tsymbal Publications
No abstract provided.
Resonant Band Engineering Of Ferroelectric Tunnel Junctions, J. Su, X. Zheng, Z. Wen, T. Li, S. Xie, K. M. Rabe, X. Liu, And E. Y. Tsymbal
Resonant Band Engineering Of Ferroelectric Tunnel Junctions, J. Su, X. Zheng, Z. Wen, T. Li, S. Xie, K. M. Rabe, X. Liu, And E. Y. Tsymbal
Evgeny Tsymbal Publications
No abstract provided.
Two-Dimensional Antiferroelectric Tunnel Junction, J. Ding, D.-F. Shao, M. Li, L.-W. Wen, And E. Y. Tsymbal
Two-Dimensional Antiferroelectric Tunnel Junction, J. Ding, D.-F. Shao, M. Li, L.-W. Wen, And E. Y. Tsymbal
Evgeny Tsymbal Publications
No abstract provided.
Spin Superfluidity In Noncollinear Antiferromagnets, Bo Li, Alexey Kovalev
Spin Superfluidity In Noncollinear Antiferromagnets, Bo Li, Alexey Kovalev
Alexey Kovalev Papers
We explore the spin superfluid transport in exchange interaction-dominated three-sublattice antiferromagnets. The system in the long-wavelength regime is described by an SO(3) invariant field theory. Additional corrections from Dzyaloshinskii-Moriya interactions or anisotropies can break the symmetry; however, the system still approximately holds a U(1)-rotation symmetry. Thus, the power-law spatial decay signature of spin superfluidity is identified in a nonlocal-measurement setup where the spin injection is described by the generalized spin-mixing conductance. We suggest iron jarosites as promising material candidates for realizing our proposal.
Spirals And Skyrmions In Antiferromagnetic Triangular Lattices, Wuzhang Fang, Aldo Raeliarijaona, Po-Hao Chang, Alexey Kovalev, K. D. Belashchenko
Spirals And Skyrmions In Antiferromagnetic Triangular Lattices, Wuzhang Fang, Aldo Raeliarijaona, Po-Hao Chang, Alexey Kovalev, K. D. Belashchenko
Alexey Kovalev Papers
We study realizations of spirals and skyrmions in two-dimensional antiferromagnets with a triangular lattice on an inversion-symmetry-breaking substrate. As a possible material realization, we investigate the adsorption of transition-metal atoms (Cr, Mn, Fe, or Co) on a monolayer of MoS2, WS2, or WSe2 and obtain the exchange, anisotropy, and Dzyaloshinskii-Moriya interaction parameters using first-principles calculations. Using energy minimization and parallel-tempering Monte Carlo simulations, we determine the magnetic phase diagrams for a wide range of interaction parameters. We find that skyrmion lattices can appear even with weak Dzyaloshinskii-Moriya interactions, but their stability is hindered by magnetic anisotropy. However, a weak easy …
Surface Acoustic Waves Increase Magnetic Domain Wall Velocity, Anil Adhikari, Shireen Adenwalla
Surface Acoustic Waves Increase Magnetic Domain Wall Velocity, Anil Adhikari, Shireen Adenwalla
Shireen Adenwalla Papers
Domain walls in magnetic thin films are being explored for memory applications and the speed at which they move has acquired increasing importance. Magnetic fields and currents have been shown to drive domain walls with speeds exceeding 500 m/s. We investigate another approach to increase domain wall velocities, using high frequency surface acoustic waves to create standing strain waves in a 3 micron wide strip of magnetic film with perpendicular anisotropy. Our measurements, at a resonant frequency of 248.8 MHz, indicate that domain wall velocities increase substantially, even at relatively low applied voltages. Our findings suggest that the strain wave …
Magnetism In Curved Geometries, Robert Streubel, Evgeny Y. Tsymbal, Peter Fischer
Magnetism In Curved Geometries, Robert Streubel, Evgeny Y. Tsymbal, Peter Fischer
Robert Streubel Papers
Curvature impacts physical properties across multiple length scales, ranging from the macroscopic scale, where the shape and size vary drastically with the curvature, to the nanoscale at interfaces and inhomogeneities in materials with structural, chemical, electronic, and magnetic short-range order. In quantum materials, where correlations, entanglement, and topology dominate, the curvature opens the path to novel characteristics and phenomena that have recently emerged and could have a dramatic impact on future fundamental and applied studies of materials. Particularly, magnetic systems hosting non-collinear and topological states and 3D magnetic nanostructures strongly benefit from treating curvature as a new design parameter to …
Methanol Carbonylation To Acetaldehyde On Au Particles Supported By Single-Layer Mos2 Grown On Silica, Kortney Almeida, Katerina Chagoya, Alan Felix, Tao Jiang, Duy Le, Takat B. Rawal, Prescott E. Evans, Michelle Wurch, Koichi Yamaguchi, Peter A. Dowben, Ludwig Bartels, Talat S. Rahman, Richard G. Blair
Methanol Carbonylation To Acetaldehyde On Au Particles Supported By Single-Layer Mos2 Grown On Silica, Kortney Almeida, Katerina Chagoya, Alan Felix, Tao Jiang, Duy Le, Takat B. Rawal, Prescott E. Evans, Michelle Wurch, Koichi Yamaguchi, Peter A. Dowben, Ludwig Bartels, Talat S. Rahman, Richard G. Blair
Department of Physics and Astronomy: Faculty Publications
Homogenous single-layer MoS2 films coated with sub-single layer amounts of gold are found to isolate the reaction of methanol with carbon monoxide, the fundamental step toward higher alcohols, from an array of possible surface reactions. Active surfaces were prepared from homogenous single-layer MoS2 films coated with sub-single layer amounts of gold. These gold atoms formed clusters on the MoS2 surface. A gas mixture of carbon monoxide (CO) and methanol (CH3OH) was partially converted to acetaldehyde (CH3CHO) under mild process conditions (308 kPa and 393 K). This carbonylation of methanol to a C2 species …
Emerging Materials For Spin-Charge Interconversion, T. Nan, D. C. Ralph, E. Y. Tsymbal, A. Manchon
Emerging Materials For Spin-Charge Interconversion, T. Nan, D. C. Ralph, E. Y. Tsymbal, A. Manchon
Evgeny Tsymbal Publications
No abstract provided.
Two-Dimensional Ferroelectricity By Design, E. Y. Tsymbal
Two-Dimensional Ferroelectricity By Design, E. Y. Tsymbal
Evgeny Tsymbal Publications
No abstract provided.
Interfacial Crystal Hall Effect Reversible By Ferroelectric Polarization, 257. D.-F. Shao, J. Ding, G. Gurung, S.-H. Zhang, And E. Y. Tsymbal
Interfacial Crystal Hall Effect Reversible By Ferroelectric Polarization, 257. D.-F. Shao, J. Ding, G. Gurung, S.-H. Zhang, And E. Y. Tsymbal
Evgeny Tsymbal Publications
No abstract provided.
Modulation Of Spin-Orbit Torque From Srruo3 By Epitaxial-Strain-Induced Octahedral Rotation, J. Zhou, X. Shu, W. Lin, D. F. Shao, S. Chen, L. Liu, P. Yang, E. Y. Tsymbal, And J. Chen
Modulation Of Spin-Orbit Torque From Srruo3 By Epitaxial-Strain-Induced Octahedral Rotation, J. Zhou, X. Shu, W. Lin, D. F. Shao, S. Chen, L. Liu, P. Yang, E. Y. Tsymbal, And J. Chen
Evgeny Tsymbal Publications
No abstract provided.
In-Plane Quasi-Single-Domain Batio3 Via Interfacial Symmetry Engineering, J. W. Lee, K. Eom, T. R. Paudel, B. Wang, H. Lu, H. X. Huyan, S. Lindemann, S. Ryu, H. Lee, T. H. Kim, Y. Yuan, J. A. Zorn, S. Lei, W. P. Gao, T. Tybell, V. Gopalan, X. Q. Pan, A. Gruverman, L. Q. Chen, E. Y. Tsymbal, And C. B. Eom
In-Plane Quasi-Single-Domain Batio3 Via Interfacial Symmetry Engineering, J. W. Lee, K. Eom, T. R. Paudel, B. Wang, H. Lu, H. X. Huyan, S. Lindemann, S. Ryu, H. Lee, T. H. Kim, Y. Yuan, J. A. Zorn, S. Lei, W. P. Gao, T. Tybell, V. Gopalan, X. Q. Pan, A. Gruverman, L. Q. Chen, E. Y. Tsymbal, And C. B. Eom
Evgeny Tsymbal Publications
No abstract provided.
Spin-Neutral Currents For Spintronics, D.-F. Shao, S.-H. Zhang, M. Li, C.-B. Eom, And E. Y. Tsymbal
Spin-Neutral Currents For Spintronics, D.-F. Shao, S.-H. Zhang, M. Li, C.-B. Eom, And E. Y. Tsymbal
Evgeny Tsymbal Publications
No abstract provided.
Reversal Of The Magnetoelectric Effect At A Ferromagnetic Metal/Ferroelectric Hfo2 Interface Induced By Metal Oxidation, Z. Chen, Q. Yang, L. L. Tao, And E. Y. Tsymbal
Reversal Of The Magnetoelectric Effect At A Ferromagnetic Metal/Ferroelectric Hfo2 Interface Induced By Metal Oxidation, Z. Chen, Q. Yang, L. L. Tao, And E. Y. Tsymbal
Evgeny Tsymbal Publications
No abstract provided.
Transport Spin Polarization Of Noncollinear Antiferromagnetic Antiperovskites, . G. Gurung, D.-F. Shao, And E. Y. Tsymbal
Transport Spin Polarization Of Noncollinear Antiferromagnetic Antiperovskites, . G. Gurung, D.-F. Shao, And E. Y. Tsymbal
Evgeny Tsymbal Publications
No abstract provided.
Regular And In-Plane Skyrmions And Antiskyrmions From Boundary Instabilities, Shane Sandhoefner, Aldo Raeliarijaona, Rabindra Nepal, Dalton Snyder-Tinoco, Alexey Kovalev
Regular And In-Plane Skyrmions And Antiskyrmions From Boundary Instabilities, Shane Sandhoefner, Aldo Raeliarijaona, Rabindra Nepal, Dalton Snyder-Tinoco, Alexey Kovalev
Department of Physics and Astronomy: Faculty Publications
We formulate a theory of skyrmion and antiskyrmion generation using magnetic field and charge current pulses. We show that the topological defect can be created at an edge of a system with Dzyaloshinskii-Moriya interaction (DMI) as well as at a boundary between regions with different DMI. We consider both perpendicular and in-plane (also known as magnetic bimerons) versions of skyrmions and antiskyrmions. We show that the magnetization twist in the vicinity of an edge or a boundary is described by a kink solution, the presence of which can instigate the generation of topological defects. We study the collective excitations of …