中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Magnetic field effect on electron spin dynamics in (110) GaAs quantum wells

文献类型:期刊论文

作者Wang, G ; Balocchi, A ; Poshakinskiy, AV ; Zhu, CR ; Tarasenko, SA ; Amand, T ; Liu, BL ; Marie, X
刊名NEW JOURNAL OF PHYSICS
出版日期2014
卷号16
关键词spin dynamics Rashba Dresselhaus (110) quantum wells Kerr rotation
ISSN号1367-2630
通讯作者Wang, G (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要We study the electron spin relaxation in both symmetric and asymmetric GaAs/AlGaAs quantum wells (QWs) grown on (110) substrates in an external magnetic field B applied along the QW normal. The spin polarization is induced by circularly polarized light and is detected using the time-resolved Kerr rotation technique. In the asymmetric structure, where a d-doped layer on one side of the QW produces the Rashba contribution to the conduction-band spin-orbit splitting, the lifetime of electron spins aligned along the growth axis exhibits an anomalous dependence on B in the range 0 < B < 0.5 T; this results from the interplay between the Dresselhaus and Rashba effective fields which are perpendicular to each other. For larger magnetic fields, the spin lifetime increases, which is a consequence of the cyclotron motion of the electrons and is also observed in (001)-grown quantum wells. The experimental results are in agreement with the calculation of the spin lifetimes in (110)-grown asymmetric quantum wells described by the point group Cs, where the growth direction is not the principal axis of the spin-relaxation-rate tensor.
资助信息France-China NSFC-ANR research project SPINMAN [10911130356]; CAS [2011T1J37]; National Science Foundation of China [11174338]; National Basic Research Program of China [2009CB30502]; Russian Foundatio for Basic Research; RF President [MD-2062.2012.2, NSh-5442.2012.2]; EU projects POLAPHEN; SPANGL4Q; Foundation 'Dynasty'
语种英语
公开日期2015-04-14
源URL[http://ir.iphy.ac.cn/handle/311004/59401]  
专题物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式
GB/T 7714
Wang, G,Balocchi, A,Poshakinskiy, AV,et al. Magnetic field effect on electron spin dynamics in (110) GaAs quantum wells[J]. NEW JOURNAL OF PHYSICS,2014,16.
APA Wang, G.,Balocchi, A.,Poshakinskiy, AV.,Zhu, CR.,Tarasenko, SA.,...&Marie, X.(2014).Magnetic field effect on electron spin dynamics in (110) GaAs quantum wells.NEW JOURNAL OF PHYSICS,16.
MLA Wang, G,et al."Magnetic field effect on electron spin dynamics in (110) GaAs quantum wells".NEW JOURNAL OF PHYSICS 16(2014).

入库方式: OAI收割

来源:物理研究所

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