2022年8月29日
Large Exotic Spin Torques in Antiferromagnetic Iron Rhodium
Physical Review Applied
- 巻
- 18
- 号
- 2
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/physrevapplied.18.024075
- 出版者・発行元
- American Physical Society (APS)
Spin torque is a promising tool for driving magnetization dynamics for computing technologies. These torques can be easily produced by spin-orbit effects, but for most conventional spin source materials, a high degree of crystal symmetry limits the geometry of the spin torques produced. Magnetic ordering is one way to reduce the symmetry of a material and allow exotic torques, and antiferromagnets are particularly promising because they are robust against external fields. We present spin torque ferromagnetic resonance (ST-FMR) measurements and second harmonic Hall measurements characterizing the spin torques in antiferromagnetic iron rhodium alloy. We report extremely large, strongly temperature-dependent exotic spin torques with a geometry apparently defined by the magnetic ordering direction. We find the spin torque efficiency of iron rhodium to be (207 ± 94)% at 170 K and (88 ± 32)% at room temperature. We support our conclusions with theoretical calculations showing how the antiferromagnetic ordering in iron rhodium gives rise to such exotic torques.
- リンク情報
-
- DOI
- https://doi.org/10.1103/physrevapplied.18.024075
- URL
- https://link.aps.org/article/10.1103/PhysRevApplied.18.024075
- URL
- http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevApplied.18.024075/fulltext
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85137729136&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85137729136&origin=inward
- ID情報
-
- DOI : 10.1103/physrevapplied.18.024075
- eISSN : 2331-7019
- SCOPUS ID : 85137729136