Ultrafast Kerr rotations and zero-field dephasing time of electron spins in InAs/GaAs quantum disks

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	Ultrafast Kerr rotations and zero-field dephasing time of electron spins in InAs/GaAs quantum disks
	Ning JQ (Ning J. Q.) ; Xu SJ (Xu S. J.) ; Wei ZF (Wei Z. F.) ; Ruan XZ (Ruan X. Z.) ; Ji Y (Ji Yang) ; Zheng HZ (Zheng H. Z.) ; Liu HC (Liu H. C.)
刊名	physics letters a
	2010
卷号	374 期号:47 页码:4793-4796
关键词	Optical Kerr effect Electron spin Quantum disks InAs/GaAs REFRACTIVE-INDEX COHERENCE GAAS SEMICONDUCTORS
通讯作者	xu, sj, univ hong kong, dept phys, pokfulam rd, hong kong, hong kong, peoples r china. 电子邮箱地址: sjxu@hkucc.hku.hk
合作状况	国内
英文摘要	time-resolved kerr rotation (trkr) measurements based on pump-probe arrangement were carried out at 5 k on the monolayer fluctuation induced inas/gaas quantum disks grown on gaas substrate without external magnetic field. the lineshape of trkr signals shows an unusual dependence on the excitation wavelength, especially antisymmetric step-shaped structures appearing when the excitation wavelength was resonantly scanned over the heavy- and light-hole subbands. moreover, these step structures possess an almost identical decay time of similar to 40 ps which is believed to be the characteristic spin dephasing time of electrons in the extremely narrow inas/gaas quantum disks.; submitted by 阎军 (yanj@red.semi.ac.cn) on 2010-12-05t05:02:38z no. of bitstreams: 1 ultrafast kerr rotations and zero-field dephasing time of electron spins in inas-gaas quantum disks.pdf: 312925 bytes, checksum: 3a3aa0757f662ef63c12fc43591dec68 (md5); approved for entry into archive by 阎军(yanj@red.semi.ac.cn) on 2010-12-05t05:06:00z (gmt) no. of bitstreams: 1 ultrafast kerr rotations and zero-field dephasing time of electron spins in inas-gaas quantum disks.pdf: 312925 bytes, checksum: 3a3aa0757f662ef63c12fc43591dec68 (md5); made available in dspace on 2010-12-05t05:06:01z (gmt). no. of bitstreams: 1 ultrafast kerr rotations and zero-field dephasing time of electron spins in inas-gaas quantum disks.pdf: 312925 bytes, checksum: 3a3aa0757f662ef63c12fc43591dec68 (md5) previous issue date: 2010; the work was supported by hong kong rgc-grf grants (no. hku 7049/08p) in hong kong and by nsfc grant (no. 10425419) in beijing. one of the authors, sjx, would like to thank w.d. sheng, w. yao, and f.c. zhang for their discussions.; 国内
学科主题	半导体物理
收录类别	SCI
资助信息	the work was supported by hong kong rgc-grf grants (no. hku 7049/08p) in hong kong and by nsfc grant (no. 10425419) in beijing. one of the authors, sjx, would like to thank w.d. sheng, w. yao, and f.c. zhang for their discussions.
语种	英语
公开日期	2010-12-05 ; 2011-04-28
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/20665]
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	Ning JQ ,Xu SJ ,Wei ZF ,et al. Ultrafast Kerr rotations and zero-field dephasing time of electron spins in InAs/GaAs quantum disks[J]. physics letters a,2010,374(47):4793-4796.
APA	Ning JQ .,Xu SJ .,Wei ZF .,Ruan XZ .,Ji Y .,...&Liu HC .(2010).Ultrafast Kerr rotations and zero-field dephasing time of electron spins in InAs/GaAs quantum disks.physics letters a,374(47),4793-4796.
MLA	Ning JQ ,et al."Ultrafast Kerr rotations and zero-field dephasing time of electron spins in InAs/GaAs quantum disks".physics letters a 374.47(2010):4793-4796.