Competition between Spin-Orbit Interaction and Zeeman Coupling in Rashba 2DEGs
arXiv:cond-mat/0406106 · doi:10.1103/PhysRevB.70.201307
Abstract
We investigate systematically how the interplay between Rashba spin-orbit interaction and Zeeman coupling affects the electron transport and the spin dynamics in InGaAs-based 2D electron gases. From the quantitative analysis of the magnetoconductance, measured in the presence of an in-plane magnetic field, we conclude that this interplay results in a spin-induced breaking of time reversal symmetry and in an enhancement of the spin relaxation time. Both effects, due to a partial alignment of the electron spin along the applied magnetic field, are found to be in excellent agreement with recent theoretical predictions.
4 figures and 4 pages
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