Deterministic Néel vector switching of altermagnets via magnetic octupole torque
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918500410327040 |
|---|---|
| author | Han, Seungyun Baek, Insu Kim, Kyoung-Whan Lee, Hyun-Woo Cheon, Suik |
| author_facet | Han, Seungyun Baek, Insu Kim, Kyoung-Whan Lee, Hyun-Woo Cheon, Suik |
| contents | Altermagnets have recently emerged as promising materials for next-generation spintronic devices. For their device applications, realizing a single-domain configuration is essential but remains challenging. We theoretically consider injecting magnetic multipoles into altermagnets, which can be achieved by applying an in-plane current to an altermagnet/normal metal bilayer. We demonstrate for $d$-wave altermagnets that the torque generated by the magnetic octupole injection can achieve magnetic-field-free deterministic switching of the altermagnets' Néel vector and transform their multidomain configurations into a single domain. This method allows the switching in diverse altermagnets, thereby facilitating their device applications and fundamental studies. This work also exemplifies the usefulness of magnetic multipole currents. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_13585 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Deterministic Néel vector switching of altermagnets via magnetic octupole torque Han, Seungyun Baek, Insu Kim, Kyoung-Whan Lee, Hyun-Woo Cheon, Suik Materials Science Altermagnets have recently emerged as promising materials for next-generation spintronic devices. For their device applications, realizing a single-domain configuration is essential but remains challenging. We theoretically consider injecting magnetic multipoles into altermagnets, which can be achieved by applying an in-plane current to an altermagnet/normal metal bilayer. We demonstrate for $d$-wave altermagnets that the torque generated by the magnetic octupole injection can achieve magnetic-field-free deterministic switching of the altermagnets' Néel vector and transform their multidomain configurations into a single domain. This method allows the switching in diverse altermagnets, thereby facilitating their device applications and fundamental studies. This work also exemplifies the usefulness of magnetic multipole currents. |
| title | Deterministic Néel vector switching of altermagnets via magnetic octupole torque |
| topic | Materials Science |
| url | https://arxiv.org/abs/2508.13585 |