Ultrafast kerr rotations and zero-field dephasing time of electron spins in inas/gaas quantum disks
文献类型：期刊论文
| 作者 | Ning, J. Q.1; Xu, S. J.1; Wei, Z. F.1; Ruan, X. Z.2; Ji, Yang2; Zheng, H. Z.2; Liu, H. C.3 |
| 刊名 | Physics letters a
 |
| 出版日期 | 2010-10-25 |
| 卷号 | 374期号:47页码:4793-4796 |
| 关键词 | Optical kerr effect Electron spin Quantum disks Inas/gaas |
| ISSN号 | 0375-9601 |
| DOI | 10.1016/j.physleta.2010.09.073 |
| 通讯作者 | Xu, s. j.(sjxu@hkucc.hku.hk) |
| 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. (c) 2010 elsevier b.v. all rights reserved. |
| WOS关键词 | REFRACTIVE-INDEX ; COHERENCE ; GAAS ; SEMICONDUCTORS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000284247900013 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2428010 |
| 专题 | 半导体研究所 |
| 通讯作者 | Xu, S. J. |
| 作者单位 | 1.Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China 3.CNR, Inst Microstruct Sci, Ottawa, ON K1A 0RG, Canada |
| 推荐引用方式 GB/T 7714 | Ning, J. Q.,Xu, S. J.,Wei, Z. F.,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, J. Q..,Xu, S. J..,Wei, Z. F..,Ruan, X. Z..,Ji, Yang.,...&Liu, H. C..(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, J. Q.,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. |
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来源：半导体研究所
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