| Ultrafast photo-induced turning of magnetization and its relaxation dynamics in gamnas | |
| Luo Jing; Zheng HouZhi; Shen Chao; Zhang Hao; Zhu Ke; Zhu Hui; Liu Jian; Li GuiRong; Ji Yang; Zhao JianHua | |
| 刊名 | Science china-physics mechanics & astronomy
 |
| 2010-05-01 | |
| 卷号 | 53期号:5页码:779-782 |
| 关键词 | Dilute magnetic semiconductor Magneto-crystalline anisotropy Time-resolved kerr rotation Coherent precession |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-010-0196-9 |
| 通讯作者 | Zheng houzhi(hzzheng@red.semi.ac.cn) |
| 英文摘要 | We report that, by linearly polarized pumping of different wavelengths, kerr transients appear at zero magnetic field only in the case when gamnas samples are initialized at 3 k by first applying a 0.8 tesla field and then returning to zero field. we find that, instead of magnetization precession, the near-band gap excitation induces a coherent out-of-plane turning of magnetization, which shows very long relaxation dynamics with no precession. when photon energy increases, the peak value of the kerr transient increases, but it decays rapidly to the original slow transient seen under the near-band-gap excitation. |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000277449900001 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2428001 |
| 专题 | 半导体研究所 |
| 通讯作者 | Zheng HouZhi |
| 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 | Luo Jing,Zheng HouZhi,Shen Chao,et al. Ultrafast photo-induced turning of magnetization and its relaxation dynamics in gamnas[J]. Science china-physics mechanics & astronomy,2010,53(5):779-782. |
| APA | Luo Jing.,Zheng HouZhi.,Shen Chao.,Zhang Hao.,Zhu Ke.,...&Zhao JianHua.(2010).Ultrafast photo-induced turning of magnetization and its relaxation dynamics in gamnas.Science china-physics mechanics & astronomy,53(5),779-782. |
| MLA | Luo Jing,et al."Ultrafast photo-induced turning of magnetization and its relaxation dynamics in gamnas".Science china-physics mechanics & astronomy 53.5(2010):779-782. |
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