In-plane optical spectral weight redistribution in the optimally doped Ba0.6K0.4Fe2As2 superconductor
文献类型：期刊论文
| 作者 | Xu, B ; Dai, YM ; Xiao, H ; Lobo, RPSM ; Qiu, XG |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2014 |
| 卷号 | 23期号:8 |
| 关键词 | iron-based superconductor infrared spectroscopy optical properties |
| ISSN号 | 1674-1056 |
| 通讯作者 | Qiu, XG (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We performed detailed temperature-dependent optical measurements on optimally doped Ba0.6K0.4Fe2As2 single crystal. We examine the changes of the in-plane optical conductivity spectral weight in the normal state and the evolution of the superconducting condensate in the superconducting state. In the normal state, the low-frequency spectral weight shows a metallic response with an arctan (T) dependence, indicating a T-linear scattering rate behavior for the carriers. A high energy spectral weight transfer associated with the Hund's coupling occurs from the low frequencies below 4000 cm(-1) similar to 5000 cm(-1) to higher frequencies up to at least 10(4) cm(-1). Its temperature dependence analysis suggests that the Hund's coupling strength is continuously enhanced as the temperature is reduced. In the superconducting state, the FGT sum rule is conserved according to the spectral weight estimation within the conduction bands, only about 40% of the conduction bands participates in the superconducting condensate indicating that Ba0.6K0.4Fe2As2 is in dirty limit. |
| 资助信息 | National Basic Research Program of China [2012CB821403, 2011CBA00107, 2012CB921302]; National Natural Science Foundation of China [11374345, 11104335, 91121004] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/58988]  |
| 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 | Xu, B,Dai, YM,Xiao, H,et al. In-plane optical spectral weight redistribution in the optimally doped Ba0.6K0.4Fe2As2 superconductor[J]. CHINESE PHYSICS B,2014,23(8). |
| APA | Xu, B,Dai, YM,Xiao, H,Lobo, RPSM,&Qiu, XG.(2014).In-plane optical spectral weight redistribution in the optimally doped Ba0.6K0.4Fe2As2 superconductor.CHINESE PHYSICS B,23(8). |
| MLA | Xu, B,et al."In-plane optical spectral weight redistribution in the optimally doped Ba0.6K0.4Fe2As2 superconductor".CHINESE PHYSICS B 23.8(2014). |
入库方式： OAI收割
来源：物理研究所
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