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arXiv · 1108.1899

Nonlinear spin Hall effect in GaAs (110) quantum wells

V. I. Ivanov·V. K. Dugaev·E. Ya. Sherman·J. Barnas
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Abstract

We consider stationary spin current in a (110)-oriented GaAs-based symmetric quantum well due to a nonlinear response to an external periodic electric field. The model assumed includes the Dresselhaus spin-orbit interaction and the random Rashba spin-orbit coupling. The Dresselhaus term is uniform in the quantum well plane and gives rise to spin splitting of the electron band. The external electric field of frequency $\omega$ - in the presence of random Rashba coupling -- leads to virtual spin-flip transitions between spin subbands, generating stationary pure spin current proportional to the square of the field amplitude.

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V. I. Ivanov, V. K. Dugaev, E. Ya. Sherman, J. Barnas. 2011-08-09. Nonlinear spin Hall effect in GaAs (110) quantum wells. https://doi.org/10.1103/physrevb.84.085326

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