Diffuse transport and spin accumulation in a Rashba two-dimensional electron gas

Details Diffuse transport and spin accumulation in a Rashba two-dimensional electron gas Diffuse transport and spin accumulation in a Rashba two-dimensional electron gas

2002-11-08

arxiv.org/abs/cond-mat/0211153v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

REVTeX4 format, 5 pages

Scientific paper

10.1103/PhysRevB.67.033104

The Rashba Hamiltonian describes the splitting of the conduction band as a result of spin-orbit coupling in the presence of an asymmetric confinement potential and is commonly used to model the electronic structure of confined narrow-gap semiconductors. Due to the mixing of spin states some care has to be exercised in the calculation of transport properties. We derive the diffusive conductance tensor for a disordered two-dimensional electron gas with spin-orbit interaction and show that the applied bias induces a spin accumulation, but that the electric current is not spin-polarized.

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