Circular polarization of excitonic luminescence in CdTe quantum wells with excess electrons of different densities
文献类型：期刊论文
| 作者 | Tan PH
|
| 刊名 | physical review b
 |
| 出版日期 | 2001 |
| 卷号 | 63期号:4页码:art.no.045313 |
| 关键词 | NEGATIVELY CHARGED EXCITONS GAS RESONANCE |
| ISSN号 | 1098-0121 |
| 通讯作者 | hu cy,chinese acad sci,inst semicond,natl lab superlattices & microstruct,beijing 100083,peoples r china. |
| 中文摘要 | the circular polarization of excitonic luminescence is studied in cdte/cd1-xmgxte quantum wells with excess electrons of low density in an external magnetic field. it is observed that the circular polarization of x and x- emissions has opposite signs and is influenced by the excess electron density. if the electron density is relatively high so that the emission intensity of the negatively charged excitons x- is much stronger than that of the neutral excitons x, a stronger circular polarization degree of both x and x- emissions is observed. we find that the circular polarization of both x- and x emissions is caused by the spin polarization of the excess electrons due to the electron-spin-dependent nature of the formation of x-. if the electron density is relatively low and the emission intensity of x- is comparable to that of x, the circular polarization degree of x and x- emissions is considerably smaller. this fact is interpreted as due to a depolarization of the excess electron spins, which is induced by the spin relaxation of x-. |
| 学科主题 | 半导体物理 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2010-08-12 |
| 源URL | [http://ir.semi.ac.cn/handle/172111/12304]  |
| 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 | Tan PH. Circular polarization of excitonic luminescence in CdTe quantum wells with excess electrons of different densities[J]. physical review b,2001,63(4):art.no.045313. |
| APA | Tan PH.(2001).Circular polarization of excitonic luminescence in CdTe quantum wells with excess electrons of different densities.physical review b,63(4),art.no.045313. |
| MLA | Tan PH."Circular polarization of excitonic luminescence in CdTe quantum wells with excess electrons of different densities".physical review b 63.4(2001):art.no.045313. |
入库方式： OAI收割
来源：半导体研究所
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