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 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.); 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 |
| 刊名 | physics letters a
 ; PHYSICS LETTERS A
|
| 出版日期 | 2010 ; 2010 |
| 卷号 | 374期号:47页码:4793-4796 |
| 关键词 | Optical Kerr effect Optical Kerr Effect Electron Spin Quantum Disks Inas/gaas Refractive-index Coherence Gaas Semiconductors 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.; 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 ; 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 ; 英语 |
| 资助机构 | 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. |
| 公开日期 | 2010-12-05 ; 2010-12-05 ; 2011-04-28 |
| 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 |
| 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 |
| 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, Ultrafast Kerr rotations and zero-field dephasing time of electron spins in InAs/GaAs quantum disks[J]. physics letters a, PHYSICS LETTERS A,2010, 2010,374, 374(47):4793-4796, 4793-4796. |
| APA | Ning JQ .,Xu SJ .,Wei ZF .,Ruan XZ .,Ji Y .,...&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.(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. |
入库方式： OAI收割
来源：半导体研究所
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