Spin dynamics of two-dimensional electrons with Rashba spin-orbit coupling and electron-electron interactions

Details Spin dynamics of two-dimensional electrons with Rashba spin-orbit coupling and electron-electron interactions Spin dynamics of two-dimensional electrons with Rashba spin-orbit coupling and electron-electron interactions

2008-01-27

arxiv.org/abs/0801.4132v2

Phys. Rev. B 78, 195325 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.78.195325

We study the spin dynamics of two dimensional electron gases (2DEGs) with Rashba spin-orbit coupling by taking account of electron-electron interactions. The diffusion equations for charge and spin densities are derived by making use of the path-integral approach and the quasiclassical Green's function. Analyzing the effect of the interactions, we show that the spin-relaxation time can be enhanced by the electron-electron interaction in the ballistic regime.

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