Magneto-Gyrotropic Photogalvanic Effect in Semiconductor Quantum Wells

V. V. Bel'kov; S. D. Ganichev; Petra Schneider; S. Giglberger; E. L. Ivchenko; S. A. Tarasenko; W. Wegscheider; D. Weiss; W. Prettl

arXiv · cond-mat/0311474

Magneto-Gyrotropic Photogalvanic Effect in Semiconductor Quantum Wells

V. V. Bel'kov·S. D. Ganichev·Petra Schneider·S. Giglberger·E. L. Ivchenko·S. A. Tarasenko·W. Wegscheider·D. Weiss·W. Prettl

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Abstract

We investigate both experimentally and theoretically, the magneto-gyrotropic photogalvanic effect in zinc-blende based quantum wells with $C_{2v}$ point-group symmetry using optical excitation in the terahertz frequency range. The investigated frequencies cause intra-subband but no inter-band and inter-subband transitions. While at normal incidence the photocurrent vanishes at zero magnetic field, it is shown that an in-plane magnetic field generates photocurrents both for polarized and unpolarized excitation. In general the spin-galvanic effect, caused by circularly polarized light, and the magneto-gyrotropic effect, caused by unpolarized excitation, is superimposed. It is shown that in the case of two specific geometries both effects are separable.

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V. V. Bel'kov, S. D. Ganichev, Petra Schneider, S. Giglberger, E. L. Ivchenko, S. A. Tarasenko, W. Wegscheider, D. Weiss, W. Prettl. 2003-11-20. Magneto-Gyrotropic Photogalvanic Effect in Semiconductor Quantum Wells. https://arxiv.org/abs/cond-mat/0311474

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