Electron spin dephasing and optical pumping of nuclear spins in GaN
文献类型：期刊论文
| 作者 | Wang, G ; Zhu, CR ; Liu, BL ; Ye, H ; Balocchi, A ; Amand, T ; Urbaszek, B ; Yang, H ; Marie, X |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:12 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Wang, G (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We have measured the donor-bound electron spin dynamics in cubic GaN by time-resolved Kerr rotation experiments. The ensemble electron spin dephasing time in this quantum-dot-like system characterized by a Bohr radius of 2.5 nm is of the order of 1.5 ns as a result of the interaction with the fluctuating nuclear spins. It increases drastically when an external magnetic field as small as 10 mT is applied. We extract a dispersion of the nuclear hyperfine field delta B-II similar to 4mT, in agreement with calculations. We also demonstrate for the first time in GaN-based systems the optical pumping of nuclear spin yielding the buildup of a significant nuclear polarization. |
| 资助信息 | National Science Foundation of China [11174338]; joint France-China ANR-NSFC project "SpinMan"; Chinese Academy of Sciences visiting professorship program [2011T1J37] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59510]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang, G,Zhu, CR,Liu, BL,et al. Electron spin dephasing and optical pumping of nuclear spins in GaN[J]. PHYSICAL REVIEW B,2014,90(12). |
| APA | Wang, G.,Zhu, CR.,Liu, BL.,Ye, H.,Balocchi, A.,...&Marie, X.(2014).Electron spin dephasing and optical pumping of nuclear spins in GaN.PHYSICAL REVIEW B,90(12). |
| MLA | Wang, G,et al."Electron spin dephasing and optical pumping of nuclear spins in GaN".PHYSICAL REVIEW B 90.12(2014). |
入库方式： OAI收割
来源：物理研究所
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