Optical signature of subgap absorption in the superconducting state of Ba(Fe1-xCox)(2)As-2
文献类型：期刊论文
| 作者 | Lobo, RPSM ; Dai, YM ; Nagel, U ; Room, T ; Carbotte, JP ; Timusk, T ; Forget, A ; Colson, D |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2010 |
| 卷号 | 82期号:10 |
| 关键词 | CONDUCTIVITY IMPURITIES ALLOYS |
| ISSN号 | 1098-0121 |
| 通讯作者 | Lobo, RPSM (reprint author), UPMC, CNRS, ESPCI ParisTech, LPEM, 10 Rue Vauquelin, F-75231 Paris 5, France. |
| 中文摘要 | The optical conductivity of Ba(Fe0.92Co0.08)(2)As-2 shows a clear signature of the superconducting gap but a simple s-wave description fails in accounting for the low-frequency response. This task is achieved by introducing an extra Drude peak in the superconducting state representing subgap absorption, other than thermally broken pairs. This extra peak and the coexisting s-wave response respect the total sum rule indicating a common origin for the carriers. We discuss the possible origins for this absorption as (i) quasiparticles due to pair breaking from interband impurity scattering in a two-band s(+/-)-gap symmetry model, which includes (ii) the possible existence of impurity levels within an isotropic gap model; or (iii) an indication that one of the bands is highly anisotropic. |
| 收录类别 | SCI |
| 资助信息 | ANR [BLAN07-1-183876 GAPSUPRA]; Estonian Ministry of Education and Research [SF0690029s09]; Estonian Science Foundation [ETF7011, ETF8170] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50357]  |
| 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 | Lobo, RPSM,Dai, YM,Nagel, U,et al. Optical signature of subgap absorption in the superconducting state of Ba(Fe1-xCox)(2)As-2[J]. PHYSICAL REVIEW B,2010,82(10). |
| APA | Lobo, RPSM.,Dai, YM.,Nagel, U.,Room, T.,Carbotte, JP.,...&Colson, D.(2010).Optical signature of subgap absorption in the superconducting state of Ba(Fe1-xCox)(2)As-2.PHYSICAL REVIEW B,82(10). |
| MLA | Lobo, RPSM,et al."Optical signature of subgap absorption in the superconducting state of Ba(Fe1-xCox)(2)As-2".PHYSICAL REVIEW B 82.10(2010). |
入库方式： OAI收割
来源：物理研究所
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