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Symmetry analysis of light-induced magnetic interactions via Floquet engineering
| Title: | Symmetry analysis of light-induced magnetic interactions via Floquet engineering |
| Authors: | Yambe, Ryota Browse this author | | Hayami, Satoru Browse this author |
| Issue Date: | 1-Aug-2023 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review B |
| Volume: | 108 |
| Issue: | 6 |
| Start Page: | 064420 |
| Publisher DOI: | 10.1103/PhysRevB.108.064420 |
| Abstract: | Anisotropic magnetic interactions become the origins of intriguing magnetic structures, such as helical and skyrmion structures by the Dzyaloshinskii-Moriya interaction. In general, possible anisotropic exchange interactions are restricted by crystal symmetry. Meanwhile, by lowering the crystal symmetry with light, additional anisotropic magnetic interactions are expected according to its polarization and frequency. In this study, we clarify a relation between anisotropic magnetic interactions and symmetry lowering in insulating magnets irradiated by light. Based on the Floquet formalism, we find that a variety of anisotropic two-spin and three-spin interactions are induced via spin-dependent electric polarizations activated by light irrespective of the presence/absence of the space inversion symmetry; we systematically classify them in the hexagonal point groups, tetragonal point groups, and their subgroups. Our symmetry analyses show that the light-induced two-spin (three-spin) interactions are due to the reduction of the point group to a chiral point group (black and white magnetic point group). We also demonstrate the effect of the light-induced magnetic interactions on the magnetic structures in a triangular unit. Our results will be a symmetry-based reference for the Floquet engineering of magnetic structures. |
| Rights: | ©2023 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/91145 |
| 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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