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Skyrmion crystal under D3h point group : Role of out-of-plane Dzyaloshinskii-Moriya interaction
| Title: | Skyrmion crystal under D3h point group : Role of out-of-plane Dzyaloshinskii-Moriya interaction |
| Authors: | Hayami, Satoru Browse this author | | Yambe, Ryota Browse this author |
| Issue Date: | 28-Jun-2022 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review B |
| Volume: | 105 |
| Issue: | 22 |
| Start Page: | 224423 |
| Publisher DOI: | 10.1103/PhysRevB.105.224423 |
| Abstract: | The Dzyaloshinskii-Moriya (DM) interaction that originates from relativistic spin-orbit coupling in noncentrosymmetric magnets is a source of topological spin textures. We theoretically investigate the possibility of a skyrmion crystal (SkX) by focusing on the role of the out-of-plane DM interaction that is different from the polarand chiral-type DM interaction. By performing the simulated annealing for a spin model on a triangular lattice belonging to the D3h point group, we construct low-temperature magnetic phase diagrams in an applied magnetic field. As a result, we find the instability toward different skyrmion crystals under in-plane and out-of-plane magnetic fields, where the key ingredients to stabilize the SkX are different according to the magnetic field direction; the SkX is stabilized under the out-of-plane DM interaction for the in-plane magnetic field, while it is stabilized by additionally introducing an easy-axis anisotropy for the out-of-plane magnetic field. We also discuss the possible multiple-Q states other than the skyrmion crystals in the presence of the out-of-plane DM interaction. Our result indicates that noncentrosymmetric magnetic materials with the out-of-plane DM interaction are potential candidates to host the skyrmion crystals. |
| Rights: | ©2022 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86578 |
| 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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