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arXiv · 1508.07906

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
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Abstract

We 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 demonstrates large tunable spin-orbit effects in magnetically-ordered materials.

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Wei Zhang, Matthias B. Jungfleisch, Frank Freimuth, Wanjun Jiang, Joseph Sklenar, John E. Pearson, John B. Ketterson, Yuriy Mokrousov, Axel Hoffmann. 2015-09-21. All electrical manipulation of magnetization dynamics in a ferromagnet by antiferromagnets with anisotropic spin Hall effects. https://doi.org/10.1103/physrevb.92.144405

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