Duality of the spin and density dynamics for two-dimensional electrons with a spin-orbit coupling

Details Duality of the spin and density dynamics for two-dimensional electrons with a spin-orbit coupling Duality of the spin and density dynamics for two-dimensional electrons with a spin-orbit coupling

2010-06-07

arxiv.org/abs/1006.1202v3

Phys. Rev. B 82, 161305 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

version accepted to PRB, revtex4, 4+ pages, 1 figure

Scientific paper

10.1103/PhysRevB.82.161305

We study spin dynamics in a two-dimensional electron gas with a pure gauge non-Abelian spin-orbit field, for which systems with balanced Rashba and Dresselhaus spin-orbit couplings, and the (110)-axis grown GaAs quantum wells are typical examples. We demonstrate the duality of the spin evolution and the electron-density dynamics in a system without spin-orbit coupling, which considerably simplifies and deepens the analysis of spin-dependent processes. This duality opens a venue for the understanding of this class of systems, highly interesting for their applications in spintronics, through known properties of the systems without spin-orbit coupling.

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