Spin-Hall conductivity of a disordered 2D electron gas with Dresselhaus spin-orbit interaction

Details Spin-Hall conductivity of a disordered 2D electron gas with Dresselhaus spin-orbit interaction Spin-Hall conductivity of a disordered 2D electron gas with Dresselhaus spin-orbit interaction

2004-10-24

arxiv.org/abs/cond-mat/0410607v2

Phys. Rev. B 71, 121308(R), 2005

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, figure added

Scientific paper

10.1103/PhysRevB.71.121308

The spin-Hall conductivity of a disordered 2D electron gas has been calculated for an arbitrary spin-orbit interaction. We have found that in the diffusive regime of electron transport, in accordance with previous calculations, the dc spin-Hall conductivity of a homogeneous system turns to zero due to impurity scattering when the spin-orbit coupling is represented only by the Rashba interaction. However, when the Dresselhaus interaction is taken into account, the spin-Hall current is not zero. We also considered the spin-Hall currents induced by an inhomogeneous electric field. It is shown that a time dependent electric charge induces a vortex of spin-Hall currents.

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