Dynamics of dense spin ensemble excited in a barrier layer and detected in a well

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	Dynamics of dense spin ensemble excited in a barrier layer and detected in a well
	Zhu H; Wang LG
刊名	science china-physics mechanics & astronomy
	2011
卷号	54 期号:6 页码:1108-1111
关键词	spin polarized transport optical orientation dense spin relaxation quantum well TRANSPORT
ISSN号	1674-7348
通讯作者	zheng, hz, chinese acad sci, inst semicond, state key lab superlattices & microstruct, pob 912, beijing 100083, peoples r china. hzzheng@red.semi.ac.cn
学科主题	半导体物理
收录类别	SCI
资助信息	national basic research program of china [2007cb924904, 2011cb932901]
语种	英语
公开日期	2011-07-05 ; 2011-07-15
附注	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 al0.27ga0.73as 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.
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/20833]
专题	半导体研究所_半导体超晶格国家重点实验室
推荐引用方式 GB/T 7714	Zhu H,Wang LG. 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	Zhu H,&Wang LG.(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	Zhu H,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.