Kinetic investigation on extrinsic spin Hall effect induced by skew scattering

Details Kinetic investigation on extrinsic spin Hall effect induced by skew scattering Kinetic investigation on extrinsic spin Hall effect induced by skew scattering

2007-06-04

arxiv.org/abs/0706.0370v2

J. Phys.: Condens. Matter 20, 085209 (2008).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures, to be published in JPCM

Scientific paper

10.1088/0953-8984/20/8/085209

The kinetics of the extrinsic spin Hall conductivity induced by the skew scattering is performed from the fully microscopic kinetic spin Bloch equation approach in $(001)$ GaAs symmetric quantum well. In the steady state, the extrinsic spin Hall current/conductivity vanishes for the linear-$\mathbf k$ dependent spin-orbit coupling and is very small for the cubic-$\mathbf k$ dependent spin-orbit coupling. The spin precession induced by the Dresselhaus/Rashba spin-orbit coupling plays a very important role in the vanishment of the extrinsic spin Hall conductivity in the steady state. An in-plane spin polarization is induced by the skew scattering, with the help of the spin-orbit coupling. This spin polarization is very different from the current-induced spin polarization.

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