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Competition between Spin-Orbit Interaction and Zeeman Coupling in Rashba 2DEGs

F. E. Meijer·A. F. Morpurgo·T. M. Klapwijk·T. Koga·J. Nitta
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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.

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F. E. Meijer, A. F. Morpurgo, T. M. Klapwijk, T. Koga, J. Nitta. 2004-06-04. Competition between Spin-Orbit Interaction and Zeeman Coupling in Rashba 2DEGs. https://doi.org/10.1103/physrevb.70.201307

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