Hybridization gap versus hidden-order gap in URu2Si2 as revealed by optical spectroscopy
文献类型：期刊论文
| 作者 | Guo, WT ; Chen, ZG ; Williams, TJ ; Garrett, JD ; Luke, GM ; Wang, NL |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 85期号:19 |
| 关键词 | ELECTRON SUPERCONDUCTOR URU2SI2 HEAVY-FERMION COMPOUNDS EXCITATIONS TRANSITIONS SYSTEMS SURFACE LATTICE |
| ISSN号 | 1098-0121 |
| 通讯作者 | Guo, WT: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter 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 | National Science Foundation of China; Ministry of Science and Technology of China; NSERC; CIFAR |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/39525]  |
| 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 | Guo, WT,Chen, ZG,Williams, TJ,et al. Hybridization gap versus hidden-order gap in URu2Si2 as revealed by optical spectroscopy[J]. PHYSICAL REVIEW B,2012,85(19). |
| APA | Guo, WT,Chen, ZG,Williams, TJ,Garrett, JD,Luke, GM,&Wang, NL.(2012).Hybridization gap versus hidden-order gap in URu2Si2 as revealed by optical spectroscopy.PHYSICAL REVIEW B,85(19). |
| MLA | Guo, WT,et al."Hybridization gap versus hidden-order gap in URu2Si2 as revealed by optical spectroscopy".PHYSICAL REVIEW B 85.19(2012). |
入库方式： OAI收割
来源：物理研究所
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