Influence of inelastic relaxation time on intrinsic spin Hall effects in a disordered two-dimensional electron gas

Details Influence of inelastic relaxation time on intrinsic spin Hall effects in a disordered two-dimensional electron gas Influence of inelastic relaxation time on intrinsic spin Hall effects in a disordered two-dimensional electron gas

2007-01-18

arxiv.org/abs/cond-mat/0701425v2

J. Phys.: Condens. Matter 20 215206 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Revtex 6 pages, 1 figure, extended with more details

Scientific paper

10.1088/0953-8984/20/21/215206

The influence of inelastic relaxation time on the intrinsic spin Hall effects in a disordered two-dimensional electron gas with Rashba interaction is studied, which clarifies the controversy of impurity effects in the system. We reveal that, due to the existence of inelastic scattering, the spin Hall conductivity does not vanish when the impurity concentration diminishes to zero no matter it is non-magnetically or magnetically disordered. The spin accumulation is evaluated by using the obtained spin Hall conductivity, and an alternate route is suggested to verify the intrinsic spin Hall effect by measuring the spin accumulation at different ratios.

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