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
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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. |
入库方式: OAI收割
来源:半导体研究所
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