Hidden T-Linear Scattering Rate in Ba0.6K0.4Fe2As2 Revealed by Optical Spectroscopy
文献类型：期刊论文
| 作者 | Dai, YM ; Xu, B ; Shen, B ; Xiao, H ; Wen, HH ; Qiu, XG ; Homes, CC ; Lobo, RPSM |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2013 |
| 卷号 | 111期号:11 |
| ISSN号 | 0031-9007 |
| 通讯作者 | Dai, YM (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, POB 603, Beijing 100190, Peoples R China. |
| 中文摘要 | The optical properties of Ba0.6K0.4Fe2As2 have been determined in the normal state for a number of temperatures over a wide frequency range. Two Drude terms, representing two groups of carriers with different scattering rates (1/tau), well describe the real part of the optical conductivity sigma(1)(omega). A "broad" Drude component results in an incoherent background with a T-independent 1/tau(b), while a "narrow" Drude component reveals a T-linear 1/tau(n) resulting in a resistivity rho(n) equivalent to 1/sigma(1n)(omega -> 0) also linear in temperature. An arctan(T) low-frequency spectral weight is also strong evidence for a T-linear 1/tau. A comparison to other materials with similar behavior suggests that the T-linear 1/tau(n) and rho(n) in Ba0.6K0.4Fe2As2 originate from scattering from spin fluctuations and hence that an antiferromagnetic quantum critical point is likely to exist in the superconducting dome. |
| 资助信息 | NSFC [91121004, 11104335]; MSTC (973 Projects) [2011CBA00107, 2012CB821400, 2012CB921302, 2009CB929102]; U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-AC02-98CH10886]; Science and Technology Service of the French Embassy in China |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57065]  |
| 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 | Dai, YM,Xu, B,Shen, B,et al. Hidden T-Linear Scattering Rate in Ba0.6K0.4Fe2As2 Revealed by Optical Spectroscopy[J]. PHYSICAL REVIEW LETTERS,2013,111(11). |
| APA | Dai, YM.,Xu, B.,Shen, B.,Xiao, H.,Wen, HH.,...&Lobo, RPSM.(2013).Hidden T-Linear Scattering Rate in Ba0.6K0.4Fe2As2 Revealed by Optical Spectroscopy.PHYSICAL REVIEW LETTERS,111(11). |
| MLA | Dai, YM,et al."Hidden T-Linear Scattering Rate in Ba0.6K0.4Fe2As2 Revealed by Optical Spectroscopy".PHYSICAL REVIEW LETTERS 111.11(2013). |
入库方式： OAI收割
来源：物理研究所
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