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

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

2006-01-16

arxiv.org/abs/cond-mat/0601353v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.74.193316

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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