Spin photocurrent, its spectra dependence, and current-induced spin polarization in an InGaAs/InAlAs two-dimensional electron gas

C. L. Yang; H. T. He; Lu Ding; L. J. Cui; Y. P. Zeng; J. N. Wang; W. K. Ge

doi:10.1063/1.2730355

Spin photocurrent, its spectra dependence, and current-induced spin polarization in an InGaAs/InAlAs two-dimensional electron gas

Mesoscale and Nanoscale Physics 2009-11-11 v1

Authors: C. L. Yang , H. T. He , Lu Ding , L. J. Cui , Y. P. Zeng , J. N. Wang , W. K. Ge

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Abstract

Converse effect of spin photocurrent and current induced spin polarization are experimentally demonstrated in the same two-dimensional electron gas system with Rashba spin splitting. Their consistency with the strength of the Rashba coupling as measured from beating of the Shubnikov-de Haas oscillations reveals a unified picture for the spin photocurrent, current-induced spin polarization and spin orbit coupling. In addition, the observed spectral inversion of the spin photocurrent indicates the system with dominating structure inversion asymmetry.

Keywords

spin photocurrent current-induced spin polarization Rashba spin splitting two-dimensional electron gas spin-orbit coupling

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@article{arxiv.cond-mat/0604331,
  title  = {Spin photocurrent, its spectra dependence, and current-induced spin polarization in an InGaAs/InAlAs two-dimensional electron gas},
  author = {C. L. Yang and H. T. He and Lu Ding and L. J. Cui and Y. P. Zeng and J. N. Wang and W. K. Ge},
  journal= {arXiv preprint arXiv:cond-mat/0604331},
  year   = {2009}
}

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13 pages, 4 figures

Spin photocurrent, its spectra dependence, and current-induced spin polarization in an InGaAs/InAlAs two-dimensional electron gas

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