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, X. Z.1; Luo, H. H.1; Ji, Yang1; Xu, Z. Y.1; Umansky, V.2 |
| 刊名 | Physical review b
 |
| 出版日期 | 2008-05-01 |
| 卷号 | 77期号:19页码:4 |
| ISSN号 | 1098-0121 |
| DOI | 10.1103/physrevb.77.193307 |
| 通讯作者 | Ji, yang(jyang@red.semi.ac.cn) |
| 英文摘要 | 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/al(0.35)ga(0.65)as 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. |
| WOS关键词 | QUANTUM-WELL ; SYSTEMS ; GAAS ; SEMICONDUCTORS ; RELAXATION |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Condensed Matter |
| 语种 | 英语 |
| WOS记录号 | WOS:000256971600022 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2427315 |
| 专题 | 半导体研究所 |
| 通讯作者 | Ji, Yang |
| 作者单位 | 1.Chinese Acad Sci, Inst Semicond, SKLSM, Beijing 100083, Peoples R China 2.Weizmann Inst Sci, Dept Condensed Mat Phys, Braun Ctr Submicron Res, IL-76100 Rehovot, Israel |
| 推荐引用方式 GB/T 7714 | Ruan, X. Z.,Luo, H. H.,Ji, Yang,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):4. |
| APA | Ruan, X. Z.,Luo, H. H.,Ji, Yang,Xu, Z. Y.,&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),4. |
| MLA | Ruan, X. Z.,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):4. |
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来源：半导体研究所
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