Probing the superconducting energy gap from infrared spectroscopy on a Ba(0.6)K(0.4)Fe(2)As(2) single crystal with T(c)=37 K
文献类型：期刊论文
| 作者 | Li, G ; Hu, WZ ; Dong, J ; Li, Z ; Zheng, P ; Chen, GF ; Luo, JL ; Wang, NL |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2008 |
| 卷号 | 101期号:10 |
| 关键词 | PENETRATION-DEPTH SUM-RULE CUPRATE TC |
| ISSN号 | 0031-9007 |
| 通讯作者 | Li, G (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We performed optical spectroscopy measurement on a superconducting Ba(0.6)K(0.4)Fe(2)As(2) single crystal with T(c) = 37 K. Formation of the superconducting energy gaps in the far-infrared reflectance spectra below T(c) is clearly observed. A flat and close to unity reflectance is observed roughly below 150 cm(-1) for T < T(c), following an s-wave pairing line shape. A more rapid decrease occurs near 200 cm(-1), leading to a peak in the ratio of the reflectance at T << T(c) over that for T >= T(c). We determined the absolute value of the penetration depth at 10 K as lambda similar or equal to 2000 +/- 80 angstrom. A spectral weight analysis shows that the Ferrell-Glover-Tinkham sum rule is satisfied at low energy scale, less than 6 Delta. |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China; Chinese Academy of Sciences; 973 project of the Ministry of Science and Technology of China |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51477]  |
| 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 | Li, G,Hu, WZ,Dong, J,et al. Probing the superconducting energy gap from infrared spectroscopy on a Ba(0.6)K(0.4)Fe(2)As(2) single crystal with T(c)=37 K[J]. PHYSICAL REVIEW LETTERS,2008,101(10). |
| APA | Li, G.,Hu, WZ.,Dong, J.,Li, Z.,Zheng, P.,...&Wang, NL.(2008).Probing the superconducting energy gap from infrared spectroscopy on a Ba(0.6)K(0.4)Fe(2)As(2) single crystal with T(c)=37 K.PHYSICAL REVIEW LETTERS,101(10). |
| MLA | Li, G,et al."Probing the superconducting energy gap from infrared spectroscopy on a Ba(0.6)K(0.4)Fe(2)As(2) single crystal with T(c)=37 K".PHYSICAL REVIEW LETTERS 101.10(2008). |
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来源：物理研究所
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