Phys. Rev. B 67, 033104 (2003) [4 pages]Diffuse transport and spin accumulation in a Rashba two-dimensional electron gasReceived 1 November 2002; published 31 January 2003 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. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.67.033104
DOI:
10.1103/PhysRevB.67.033104
PACS:
72.10.-d, 72.20.-i, 72.25.-b
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