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28 March 2024
 
  » arxiv » 1508.7906

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All electrical manipulation of magnetization dynamics in a ferromagnet by antiferromagnets with anisotropic spin Hall effects
Wei Zhang ; Matthias B. Jungfleisch ; Frank Freimuth ; Wanjun Jiang ; Joseph Sklenar ; John E. Pearson ; John B. Ketterson ; Yuriy Mokrousov ; Axel Hoffmann ;
Date 31 Aug 2015
AbstractWe investigate spin-orbit torques of metallic CuAu-I-type antiferromagnets using spin-torque ferromagnetic resonance tuned by a dc-bias current. The observed spin torques predominantly arise from diffusive transport of spin current generated by the spin Hall effect. We find a growth-orientation dependence of the spin torques by studying epitaxial samples, which may be correlated to the anisotropy of the spin Hall effect. The observed anisotropy is consistent with first-principles calculations on the intrinsic spin Hall effect. Our work suggests large tunable spin-orbit effects in magnetically-ordered materials.
Source arXiv, 1508.7906
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