論文

2022年8月29日

Large Exotic Spin Torques in Antiferromagnetic Iron Rhodium

Physical Review Applied
  • Jonathan Gibbons
  • Takaaki Dohi
  • Vivek P. Amin
  • Fei Xue
  • Haowen Ren
  • Jun-Wen Xu
  • Hanu Arava
  • Soho Shim
  • Hilal Saglam
  • Yuzi Liu
  • John E. Pearson
  • Nadya Mason
  • Amanda K. Petford-Long
  • Paul M. Haney
  • Mark D. Stiles
  • Eric E. Fullerton
  • Andrew D. Kent
  • Shunsuke Fukami
  • Axel Hoffmann
  • 全て表示

18
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

エクスポート
BibTeX RIS