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

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

2009-09-10

arxiv.org/abs/0909.1880v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures, submitted to Physica E, Proceedings of EP2DS-18

Scientific paper

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 $\tau_{DP}$ due to the Dyakonov-Perel mechanism as well as the Elliot-Yafet spin-relaxation time $\tau_s$ due to the spin-orbit scattering from impurities. The total spin Hall conductivity depends crucially on the ratio $\tau_s /\tau_{DP}$.

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