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Nonlinear nonreciprocal transport in antiferromagnets free from spin-orbit coupling
| Title: | Nonlinear nonreciprocal transport in antiferromagnets free from spin-orbit coupling |
| Authors: | Hayami, Satoru Browse this author | | Yatsushiro, Megumi Browse this author |
| Issue Date: | 26-Jul-2022 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review B |
| Volume: | 106 |
| Issue: | 1 |
| Start Page: | 014420 |
| Publisher DOI: | 10.1103/PhysRevB.106.014420 |
| Abstract: | We theoretically propose a realization of nonlinear nonreciprocal transport in antiferromagnets without relying on the relativistic spin-orbit coupling. Through symmetry and microscopic model analyses, we show that a local spin scalar chirality inducing an asymmetric band modulation becomes a source of a Drude-type nonlinear transport, while an electric polarization induced by a collinear spin configuration in a triangle unit leads to a Berry-curvature-dipole-type nonlinear transport. We demonstrate 120 degrees antiferromagnetic ordering on a triangular lattice and a breathing kagome lattice in an external magnetic field as typical examples. Our results open another direction for the design and engineering of functional materials to show rich parity-violating transport phenomena induced by spontaneous magnetic phase transitions even without the spin-orbit coupling. |
| Rights: | ©2022 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86670 |
| 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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