Spin conduction in anisotropic three-dimensional topological insulators
文献类型：期刊论文
| 作者 | Sacksteder, VE ; Kettemann, S ; Wu, QS ; Dai, X ; Fang, Z |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 85期号:20 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Sacksteder, VE (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We present the in-plane optical reflectance measurement on single crystals of URu2Si2. The study revealed a strong temperature-dependent spectral evolution. Above 50 K, the low frequency optical conductivity is rather flat without a clear Drude-like response, indicating a very short transport lifetime of the free carriers. Well below thecoherence temperature, there appears an abrupt spectral weight suppression below 400 cm(-1), yielding evidence for the formation of a hybridization energy gap arising from the mixing of the conduction electron and narrow f-electron bands. A small part of the suppressed spectral weight was transferred to the low frequency side, leading to a narrow Drude component, while the majority of the suppressed spectral weight was transferred to the high frequency side centered near 3500 cm(-1). Below the hidden order temperature, another very prominent energy gap structure was observed, which leads to the removal of a large part of the Drude component and a sharp reduction of the carrier scattering rate. The study revealed that the hybridization gap and the hidden order gap are distinctly different: they occur at different energy scales and exhibit completely different spectral characteristics. |
| 收录类别 | SCI |
| 资助信息 | NSF of China [NSFC 10876042, NSFC 10874158]; 973 program of China [2007CB925000, 2011CBA00108]; WCU (World Class University) of POSTECH through Division of Advanced Materials Science [R31-2008-000-10059-0] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52869]  |
| 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 | Sacksteder, VE,Kettemann, S,Wu, QS,et al. Spin conduction in anisotropic three-dimensional topological insulators[J]. PHYSICAL REVIEW B,2012,85(20). |
| APA | Sacksteder, VE,Kettemann, S,Wu, QS,Dai, X,&Fang, Z.(2012).Spin conduction in anisotropic three-dimensional topological insulators.PHYSICAL REVIEW B,85(20). |
| MLA | Sacksteder, VE,et al."Spin conduction in anisotropic three-dimensional topological insulators".PHYSICAL REVIEW B 85.20(2012). |
入库方式： OAI收割
来源：物理研究所
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