Dynamics of dense spin ensemble excited in a barrier layer and detected in a well
文献类型：期刊论文
| 作者 | Shen Chao; Wang LiGuo; Zhu Hui; Zheng HouZhi |
| 刊名 | Science china-physics mechanics & astronomy
 |
| 出版日期 | 2011-06-01 |
| 卷号 | 54期号:6页码:1108-1111 |
| 关键词 | Spin polarized transport Optical orientation Dense spin relaxation Quantum well |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-011-4348-3 |
| 通讯作者 | Zheng houzhi(hzzheng@red.semi.ac.cn) |
| 英文摘要 | Photoluminescence (pl) polarization of a spin ensemble was examined over a wide excitation wavelength range from 520 nm to 700 nm and a temperature range from 3.5 k to 300 k after it transfers from a (alga)as barrier layer and eventually quenches irradiatively in a gaas quantum well (qw). a highest pl circular polarization of 30% can be kept at temperatures up to 120 k, while its room temperature value reaches about 17%. it is found that the main features of the optical spin orientation in bulk al(0.27)ga(0.73)as materials can be reproduced in terms of the wavelength dependence of pl polarization degree, as the spin polarized ensemble transfers and relaxes into gaas qw. the transient of pl polarization degree also indicates that a dense spin ensemble collected from the barrier region is in favor of conserving its polarization in gaas qw as evidenced by a rising temporal response. |
| WOS关键词 | TRANSPORT |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000290768500017 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2428285 |
| 专题 | 半导体研究所 |
| 通讯作者 | Zheng HouZhi |
| 作者单位 | Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen Chao,Wang LiGuo,Zhu Hui,et al. Dynamics of dense spin ensemble excited in a barrier layer and detected in a well[J]. Science china-physics mechanics & astronomy,2011,54(6):1108-1111. |
| APA | Shen Chao,Wang LiGuo,Zhu Hui,&Zheng HouZhi.(2011).Dynamics of dense spin ensemble excited in a barrier layer and detected in a well.Science china-physics mechanics & astronomy,54(6),1108-1111. |
| MLA | Shen Chao,et al."Dynamics of dense spin ensemble excited in a barrier layer and detected in a well".Science china-physics mechanics & astronomy 54.6(2011):1108-1111. |
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来源：半导体研究所
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