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Nonlinear spin Hall effect in PT-symmetric collinear magnets
| Title: | Nonlinear spin Hall effect in PT-symmetric collinear magnets |
| Authors: | Hayami, Satoru Browse this author | | Yatsushiro, Megumi Browse this author | | Kusunose, Hiroaki Browse this author |
| Issue Date: | 11-Jul-2022 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review B |
| Volume: | 106 |
| Issue: | 2 |
| Start Page: | 024405 |
| Publisher DOI: | 10.1103/PhysRevB.106.024405 |
| Abstract: | We theoretically investigate a nonlinear spin Hall effect in PT-symmetric antiferromagnetic metals, which serve as an efficient spin current generator. We elucidate that an emergent spin-dependent Berry curvature dipole is a microscopic origin of the nonlinear spin Hall effect, which becomes nonzero with neither relativistic spin-orbit coupling, uniform magnetization, nor spin-split band structure. By analyzing a microscopic antifer-romagnetic model without spin-orbit coupling for an intuitive understanding of the phenomena, we elucidate essential hopping processes and a condition to enhance the nonlinear spin Hall conductivity. We also provide a complete table to include useful correspondence among the N??el vector, odd-parity multipoles, nonlinear spin conductivity tensor, and candidate materials in all the PT-symmetric black-and-white magnetic point groups. |
| Rights: | ©2022 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86671 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 速水 賢
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