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Transport Equations and Spin-Charge Propagating Mode in the Two Dimensional Hole Gas

Taylor L. Hughes·B. Andrei Bernevig·Yaroslaw B. Bazaliy
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Abstract

We find that the spin-charge motion in a strongly confined two-dimensional hole gas (2DHG) supports a propagating mode of cubic dispersion apart from the diffusive mode due to momentum scattering. Propagating modes seem to be a generic property of systems with spin-orbit coupling. Through a rigorous Keldysh approach, we obtain the transport equations for the 2DHG, we analyze the behavior of the hole spin relaxation time, the diffusion coefficients, and the spin-charge coupled motion.

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Taylor L. Hughes, B. Andrei Bernevig, Yaroslaw B. Bazaliy. 2006-01-16. Transport Equations and Spin-Charge Propagating Mode in the Two Dimensional Hole Gas. https://doi.org/10.1103/physrevb.74.193316

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