中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effect of electron-electron scattering on spin dephasing in a high-mobility low-density two-dimensional electron gas

文献类型:期刊论文

作者Ruan, XZ ; Luo, HH ; Ji, Y ; Xu, ZY ; Umansky, V
刊名physical review b
出版日期2008
卷号77期号:19页码:art. no. 193307
关键词QUANTUM-WELL SYSTEMS GAAS SEMICONDUCTORS RELAXATION
ISSN号1098-0121
通讯作者ji, y, chinese acad sci, inst semicond, sklsm, beijing 100083, peoples r china. 电子邮箱地址: jyang@red.semi.ac.cn
中文摘要by utilizing time-resolved kerr rotation techniques, we have investigated the spin dynamics of a high-mobility low density two-dimensional electron gas in a gaas/al0.35ga0.65as heterostructure in the dependence on temperature from 1.5 to 30 k. it is found that the spin relaxation/dephasing time under a magnetic field of 0.5 t exhibits a maximum of 3.12 ns around 14 k, which is superimposed on an increasing background with rising temperature. the appearance of the maximum is ascribed to that at the temperature where the crossover from the degenerate to the nondegenerate regime takes place, electron-electron coulomb scattering becomes strongest, and thus inhomogeneous precession broadening due to the d'yakonov-perel' mechanism becomes weakest. these results agree with the recent theoretical predictions [j. zhou et al., phys. rev. b 15, 045305 (2007)], which verify the importance of electron-electron coulomb scattering to electron spin relaxation/dephasing.
学科主题半导体物理
收录类别SCI
语种英语
公开日期2010-03-08
源URL[http://ir.semi.ac.cn/handle/172111/6614]  
专题半导体研究所_中国科学院半导体研究所(2009年前)
推荐引用方式
GB/T 7714
Ruan, XZ,Luo, HH,Ji, Y,et al. Effect of electron-electron scattering on spin dephasing in a high-mobility low-density two-dimensional electron gas[J]. physical review b,2008,77(19):art. no. 193307.
APA Ruan, XZ,Luo, HH,Ji, Y,Xu, ZY,&Umansky, V.(2008).Effect of electron-electron scattering on spin dephasing in a high-mobility low-density two-dimensional electron gas.physical review b,77(19),art. no. 193307.
MLA Ruan, XZ,et al."Effect of electron-electron scattering on spin dephasing in a high-mobility low-density two-dimensional electron gas".physical review b 77.19(2008):art. no. 193307.

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来源:半导体研究所

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