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arXiv · 1909.00976

Self-induced inverse spin Hall effect in ferromagnets: demonstration through non-monotonous temperature-dependence in permalloy

O. Gladii·L. Frangou·A. Hallal·R. L. Seeger·P. Noel·G. Forestier·S. Auffret·M. Rubio-Roy·P. Warin·L. Vila·S. Wimmer·H. Ebert·S. Gambarelli·M. Chshiev·V. Baltz
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Abstract

We investigated the self-induced inverse spin Hall effect in ferromagnets. Temperature (T), thickness (t) and angular-dependent measurements of transverse voltage in spin pumping experiments were performed with permalloy films. Results revealed non-monotonous T-dependence of the self-induced transverse voltage. Qualitative agreement was found with first-principle calculations unravelling the skew scattering, side-jump, and intrinsic contributions to the T-dependent spin Hall conductivity. Experimental data were similar whatever the material in contact with permalloy (oxides or metals), and revealed an increase of produced current with t, demonstrating a bulk origin of the effect.

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O. Gladii, L. Frangou, A. Hallal, R. L. Seeger, P. Noel, G. Forestier, S. Auffret, M. Rubio-Roy, P. Warin, L. Vila, S. Wimmer, H. Ebert, S. Gambarelli, M. Chshiev, V. Baltz. 2019-09-03. Self-induced inverse spin Hall effect in ferromagnets: demonstration through non-monotonous temperature-dependence in permalloy. https://doi.org/10.1103/physrevb.100.174409

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