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

Weber  W; Seidl  S; Belkov  VVGolub  LEDanilov  SNIvchenko  ELPrettl  WKvon  ZDCho  HILee  JH

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

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

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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. (C) 2007 Elsevier Ltd. All rights reserved.

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来源
《Solid State Communications》 |2008年第2期|56-60|共5页
作者
Weber W; Seidl S; Belkov VVGolub LEDanilov SNIvchenko ELPrettl WKvon ZDCho HILee JH;
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作者单位

Univ Regensburg, Terahertz Ctr, D-93040 Regensburg, Germany;

Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia;

Russian Acad Sci, Inst Semicond Phys, Novosibirsk 630090, RussiaKyungpook Natl Univ, Taegu 702701, South Korea;

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原文格式 PDF
正文语种英语
中图分类固体物理学;
关键词
gallium nitride; two-dimensional systems; photogalvanic effects; QUANTUM-WELLS; POLARIZATION; FIELD;

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

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