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arXiv · 1312.6539

Colossal Spin Hall Effect in Ultrathin Metallic Films

Christian Herschbach·Dmitry V. Fedorov·Martin Gradhand·Ingrid Mertig
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Abstract

We predict spin Hall angles up to 80% for ultrathin noble metal films with substitutional Bi impurities. The colossal spin Hall effect is caused by enhancement of the spin Hall conductivity in reduced sample dimension and a strong reduction of the charge conductivity by resonant impurity scattering. These findings can be exploited to create materials with high efficiency of charge to spin current conversion by strain engineering.

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Christian Herschbach, Dmitry V. Fedorov, Martin Gradhand, Ingrid Mertig. 2013-12-23. Colossal Spin Hall Effect in Ultrathin Metallic Films. https://doi.org/10.1103/physrevb.90.180406

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