Spin relaxation and dephasing mechanism in (ga,mn)as studied by time-resolved kerr rotation
文献类型：期刊论文
| 作者 | Zhu, Yonggang; Zhang, Xinhui; Li, Tao; Chen, Lin; Lu, Jun; Zhao, Jianhua |
| 刊名 | Applied physics letters
 |
| 出版日期 | 2009-04-06 |
| 卷号 | 94期号:14页码:3 |
| 关键词 | Curie temperature Ferromagnetic materials Gallium compounds Kerr magneto-optical effect Magnetic relaxation Magnetic thin films Manganese compounds Semimagnetic semiconductors Spin dynamics Time resolved spectra |
| ISSN号 | 0003-6951 |
| DOI | 10.1063/1.3116716 |
| 通讯作者 | Zhang, xinhui(xinhuiz@semi.ac.cn) |
| 英文摘要 | Spin dynamics in (ga,mn)as films grown on gaas(001) was investigated by time-resolved magneto-optical kerr effect. the kerr signal decay time of (ga,mn)as without external magnetic field applied was found to be several hundreds picoseconds, which suggested that photogenerated polarized holes and magnetic ions are coupled as a ferromagnetic system. nonmonotonic temperature dependence of relaxation and dephasing (r&d) time and larmor frequency manifests that bir-aronov-pikus mechanism dominates the spin r&d time at low temperature, while d'yakonov-perel mechanism dominates the spin r&d time at high temperature, and the crossover between the two regimes is curie temperature. |
| WOS关键词 | SPINTRONICS ; GAAS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000265083700036 |
| 出版者 | AMER INST PHYSICS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2427638 |
| 专题 | 半导体研究所 |
| 通讯作者 | Zhang, Xinhui |
| 作者单位 | Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Yonggang,Zhang, Xinhui,Li, Tao,et al. Spin relaxation and dephasing mechanism in (ga,mn)as studied by time-resolved kerr rotation[J]. Applied physics letters,2009,94(14):3. |
| APA | Zhu, Yonggang,Zhang, Xinhui,Li, Tao,Chen, Lin,Lu, Jun,&Zhao, Jianhua.(2009).Spin relaxation and dephasing mechanism in (ga,mn)as studied by time-resolved kerr rotation.Applied physics letters,94(14),3. |
| MLA | Zhu, Yonggang,et al."Spin relaxation and dephasing mechanism in (ga,mn)as studied by time-resolved kerr rotation".Applied physics letters 94.14(2009):3. |
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来源：半导体研究所
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