TL;DR
This paper reviews the spin Hall effect, highlighting both extrinsic and intrinsic mechanisms, and discusses recent experimental observations of the phenomenon in materials with spin-orbit coupling.
Contribution
It explains the intrinsic mechanism of the spin Hall effect and summarizes recent experimental findings, providing a comprehensive overview.
Findings
Intrinsic spin Hall effect mechanism elucidated
Recent experiments confirm intrinsic contributions
Impurities and spin-orbit coupling both influence the effect
Abstract
A brief review is given on the spin Hall effect, where an external electric field induces a transverse spin current. It has been recognized over 30 years that such effect occurs due to impurities in the presence of spin-orbit coupling. Meanwhile, it was proposed recently that there is also an intrinsic contribution for this effect. We explain the mechanism for this intrinsic spin Hall effect. We also discuss recent experimental observations of the spin Hall effect.
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