Interplay of intrinsic and extrinsic mechanisms to the spin Hall effect in a two-dimensional electron gas

Roberto Raimondi; Peter Schwab

doi:10.1016/j.physe.2009.10.047

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arXiv · 0909.1880

Interplay of intrinsic and extrinsic mechanisms to the spin Hall effect in a two-dimensional electron gas

Roberto Raimondi·Peter Schwab

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Abstract

In order to describe correctly the interplay of extrinsic and intrinsic spin-orbit mechanisms to the spin Hall effect, it is necessary to consider different sources of spin relaxation. We take into account the spin relaxation time $τ_{DP}$ due to the Dyakonov-Perel mechanism as well as the Elliot-Yafet spin-relaxation time $τ_s$ due to the spin-orbit scattering from impurities. The total spin Hall conductivity depends crucially on the ratio $τ_s /τ_{DP}$.

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Roberto Raimondi, Peter Schwab. 2009-09-10. Interplay of intrinsic and extrinsic mechanisms to the spin Hall effect in a two-dimensional electron gas. https://doi.org/10.1016/j.physe.2009.10.047

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