Carrier spin relaxation in (ga, mn) as at room temperature
文献类型：期刊论文
| 作者 | Liu Xiao-Dong1; Wang Wei-Zhu2; Gao Rui-Xin1; Zhao Jian-Hua2; Wen Jin-Hui1; Lin Wei-Zhu1; Lai Tian-Shu1 |
| 刊名 | Acta physica sinica
 |
| 出版日期 | 2008-06-01 |
| 卷号 | 57期号:6页码:3857-3861 |
| 关键词 | (ga, mn) as diluted magnetic semiconductor Time-resolved kerr spectroscopy Electron spin relaxation Dp mechanism |
| ISSN号 | 1000-3290 |
| 通讯作者 | Lai tian-shu(stslts@mail.sysu.edu.cn) |
| 英文摘要 | In this paper, the excitation energy density dependence of carrier spin relaxation is studied at room temperature for the as-grown and annealed (ga, mn) as samples using femtosecond time-resolved pump-probe kerr spectroscopy. it is found that spin relaxation lifetime of electrons lengthens with increasing excitation energy density for both samples, and the annealed ( ga, mn) as has shorter carrier recombination and electron spin relaxation lifetimes as well as larger kerr rotation angle than the as-grown ( ga. mn) as under the same excitation condition. which shows that dp mechanism is dominant in the spin relaxation process for ( ga, mn)as at room temperature. the enhanced ultrafast kerr effect in the annealed (ga,mn)as shows the potential application of the annealed ( ga, mn) as in ultrafast all-optical spin switches, and also provides a further evidence for the p-d exchange mechanism of the ferromagnetic origin of (ga, mn) as. |
| WOS关键词 | QUANTUM-WELLS ; SEMICONDUCTOR ; (GA,MN)AS ; FERROMAGNETISM ; INJECTION |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000256874600092 |
| 出版者 | CHINESE PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2427277 |
| 专题 | 半导体研究所 |
| 通讯作者 | Lai Tian-Shu |
| 作者单位 | 1.Sun Yat Sen Univ, Dept Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Xiao-Dong,Wang Wei-Zhu,Gao Rui-Xin,et al. Carrier spin relaxation in (ga, mn) as at room temperature[J]. Acta physica sinica,2008,57(6):3857-3861. |
| APA | Liu Xiao-Dong.,Wang Wei-Zhu.,Gao Rui-Xin.,Zhao Jian-Hua.,Wen Jin-Hui.,...&Lai Tian-Shu.(2008).Carrier spin relaxation in (ga, mn) as at room temperature.Acta physica sinica,57(6),3857-3861. |
| MLA | Liu Xiao-Dong,et al."Carrier spin relaxation in (ga, mn) as at room temperature".Acta physica sinica 57.6(2008):3857-3861. |
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来源：半导体研究所
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