Exciton valley dynamics probed by Kerr rotation in WSe2 monolayers
文献类型：期刊论文
| 作者 | Zhu, CR ; Zhang, K ; Glazov, M ; Urbaszek, B ; Amand, T ; Ji, ZW ; Liu, BL ; Marie, X |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:16 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Zhu, CR (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100190, Peoples R China. |
| 中文摘要 | We have experimentally studied the pump-probe Kerr rotation dynamics in WSe2 monolayers. This yields a direct measurement of the exciton valley depolarization time tau(nu). At T = 4 K, we find tau(nu) approximate to 6 ps, a fast relaxation time resulting from the strong electron-hole Coulomb exchange interaction in bright excitons. The exciton valley depolarization time decreases significantly when the lattice temperature increases, with tau(nu) being as short as 1.5 ps at 125 K. The temperature dependence is well explained by the developed theory, taking into account the exchange interaction and fast exciton scattering time on the short-range potential. |
| 资助信息 | National Science Foundation of China [11174338]; Programme Investissements d'Avenir [ANR-11-IDEX-0002-02, ANR-10-LABX-0037-NEXT]; ERC [306719]; Chinese Academy of Sciences Visiting Professorship program for Senior International Scientists [2011T1J37]; Russian Science Foundation [14-12-01067] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59504]  |
| 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 | Zhu, CR,Zhang, K,Glazov, M,et al. Exciton valley dynamics probed by Kerr rotation in WSe2 monolayers[J]. PHYSICAL REVIEW B,2014,90(16). |
| APA | Zhu, CR.,Zhang, K.,Glazov, M.,Urbaszek, B.,Amand, T.,...&Marie, X.(2014).Exciton valley dynamics probed by Kerr rotation in WSe2 monolayers.PHYSICAL REVIEW B,90(16). |
| MLA | Zhu, CR,et al."Exciton valley dynamics probed by Kerr rotation in WSe2 monolayers".PHYSICAL REVIEW B 90.16(2014). |
入库方式： OAI收割
来源：物理研究所
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