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Orthorhombic distortion and rectangular skyrmion crystal in a centrosymmetric tetragonal host
| Title: | Orthorhombic distortion and rectangular skyrmion crystal in a centrosymmetric tetragonal host |
| Authors: | Hayami, Satoru Browse this author |
| Keywords: | magnetic skyrmion | | centrosymmetric magnets | | magnetic frustration |
| Issue Date: | 22-Dec-2022 |
| Publisher: | IOP Publishing |
| Journal Title: | Journal Of Physics: materials |
| Volume: | 6 |
| Issue: | 1 |
| Start Page: | 014006 |
| Publisher DOI: | 10.1088/2515-7639/acab89 |
| Abstract: | We theoretically investigate the stability of a rectangular skyrmion crystal without fourfold rotational symmetry under an orthorhombic distortion in centrosymmetric tetragonal magnets. The results are obtained by numerically simulated annealing for an effective spin model with competing interactions in momentum space and magnetic anisotropy. By constructing the low-temperature phase diagram while changing the interaction ratio arising from the orthorhombic distortion, we find that the rectangular skyrmion crystal remains stable in an external magnetic field against distortion. We show that the degree of fourfold rotational symmetry tends to recover when the magnetic field is increased. The relevance to the skyrmion-hosting material EuAl4 is also discussed. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/88906 |
| 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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