Direct observation of coherent spin transfer processes in an InGaAs/GaAs quantum well via two-color time-resolved Kerr rotation measurements

CORC > 半导体研究所 > 中国科学院半导体研究所 > 中国科学院半导体研究所（2009年前）

	Direct observation of coherent spin transfer processes in an InGaAs/GaAs quantum well via two-color time-resolved Kerr rotation measurements
	Ruan, XZ ; Sun, BQ ; Ji, Y ; Yang, W ; Zhao, JH ; Xu, ZY
刊名	semiconductor science and technology
	2008
卷号	23 期号:7 页码:art. no. 075021
关键词	PHOTONIC CRYSTAL FIBER SELF-PHASE-MODULATION SEMICONDUCTOR SPINTRONICS CONTINUUM GENERATION SAPPHIRE LASERS OPTICAL-FIBERS SPECTROSCOPY HETEROSTRUCTURES SYNCHRONIZATION TEMPERATURE
ISSN号	0268-1242
通讯作者	ruan, xz, chinese acad sci, inst semicond, state key lab superlatt & microstruct, beijing 100083, peoples r china. 电子邮箱地址: jiyang@red.semi.ac.cn
中文摘要	a two-color time-resolved kerr rotation spectroscopy system was built, with a femtosecond ti:sapphire laser and a photonic crystal fiber, to study coherent spin transfer processes in an ingaas/gaas quantum well sample. the femtosecond ti:sapphire laser plays two roles: besides providing a pump beam with a tunable wavelength, it also excites the photonic crystal fiber to generate supercontinuum light ranging from 500 nm to 1600 nm, from which a probe beam with a desirable wavelength is selected with a suitable interference filter. with such a system, we studied spin transfer processes between two semiconductors of different gaps in an ingaas/gaas quantum well sample. we found that electron spins generated in the gaas barrier were transferred coherently into the ingaas quantum well. a model based on rate equations and bloch-torrey equations is used to describe the coherent spin transfer processes quantitatively. with this model, we obtain an effective electron spin accumulation time of 21 ps in the ingaas quantum well.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-03-08
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/6592]
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	Ruan, XZ,Sun, BQ,Ji, Y,et al. Direct observation of coherent spin transfer processes in an InGaAs/GaAs quantum well via two-color time-resolved Kerr rotation measurements[J]. semiconductor science and technology,2008,23(7):art. no. 075021.
APA	Ruan, XZ,Sun, BQ,Ji, Y,Yang, W,Zhao, JH,&Xu, ZY.(2008).Direct observation of coherent spin transfer processes in an InGaAs/GaAs quantum well via two-color time-resolved Kerr rotation measurements.semiconductor science and technology,23(7),art. no. 075021.
MLA	Ruan, XZ,et al."Direct observation of coherent spin transfer processes in an InGaAs/GaAs quantum well via two-color time-resolved Kerr rotation measurements".semiconductor science and technology 23.7(2008):art. no. 075021.