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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