Magneto-gyrotropic photogalvanic effects in GaN/AlGaN two-dimensional systems

W. Weber; S. Seidl; S. N. Danilov; W. Prettl; V. V. Bel'kov; L. E. Golub; E. L. Ivchenko; Z. D. Kvon; Hyun-Ick Cho; Jung-Hee Lee; S. D. Ganichev

doi:10.1016/j.ssc.2007.09.035

Magneto-gyrotropic photogalvanic effects in GaN/AlGaN two-dimensional systems

Mesoscale and Nanoscale Physics 2009-11-13 v1

Authors: W. Weber , S. Seidl , S. N. Danilov , W. Prettl , V. V. Bel'kov , L. E. Golub , E. L. Ivchenko , Z. D. Kvon , Hyun-Ick Cho , Jung-Hee Lee , S. D. Ganichev

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Abstract

The magneto-gyrotropic photogalvanic and spin-galvanic effects are observed in (0001)-oriented GaN/AlGaN heterojunctions excited by terahertz radiation. We show that free-carrier absorption of linearly or circularly polarized terahertz radiation in low-dimensional structures causes an electric photocurrent in the presence of an in-plane magnetic field. Microscopic mechanisms of these photocurrents based on spin-related phenomena are discussed. Properties of the magneto-gyrotropic and spin-galvanic effects specific for hexagonal heterostructures are analyzed.

Keywords

magneto-gyrotropic photogalvanic effect spin-galvanic effect GaN/AlGaN heterojunctions terahertz radiation free-carrier absorption two-dimensional systems hexagonal heterostructures

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@article{arxiv.0709.4330,
  title  = {Magneto-gyrotropic photogalvanic effects in GaN/AlGaN two-dimensional systems},
  author = {W. Weber and S. Seidl and S. N. Danilov and W. Prettl and V. V. Bel'kov and L. E. Golub and E. L. Ivchenko and Z. D. Kvon and Hyun-Ick Cho and Jung-Hee Lee and S. D. Ganichev},
  journal= {arXiv preprint arXiv:0709.4330},
  year   = {2009}
}

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Accepted for publication in Solid State Communications

Magneto-gyrotropic photogalvanic effects in GaN/AlGaN two-dimensional systems

Abstract

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