Probing the superconducting energy gap from infrared spectroscopy on a ba0.6k0.4fe2as2 single crystal with t-c=37 k | |
Li, G.; Hu, W. Z.; Dong, J.; Li, Z.; Zheng, P.; Chen, G. F.; Luo, J. L.; Wang, N. L. | |
刊名 | Physical review letters
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2008-09-05 | |
卷号 | 101期号:10页码:4 |
ISSN号 | 0031-9007 |
DOI | 10.1103/physrevlett.101.107004 |
通讯作者 | Li, g.() |
英文摘要 | We performed optical spectroscopy measurement on a superconducting ba0.6k0.4fe2as2 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. |
WOS关键词 | PENETRATION-DEPTH ; SUM-RULE ; CUPRATE ; TC |
WOS研究方向 | Physics |
WOS类目 | Physics, Multidisciplinary |
语种 | 英语 |
出版者 | AMER PHYSICAL SOC |
WOS记录号 | WOS:000258975100053 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2373672 |
专题 | 物理研究所 |
通讯作者 | Li, G. |
作者单位 | Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Li, G.,Hu, W. Z.,Dong, J.,et al. Probing the superconducting energy gap from infrared spectroscopy on a ba0.6k0.4fe2as2 single crystal with t-c=37 k[J]. Physical review letters,2008,101(10):4. |
APA | Li, G..,Hu, W. Z..,Dong, J..,Li, Z..,Zheng, P..,...&Wang, N. L..(2008).Probing the superconducting energy gap from infrared spectroscopy on a ba0.6k0.4fe2as2 single crystal with t-c=37 k.Physical review letters,101(10),4. |
MLA | Li, G.,et al."Probing the superconducting energy gap from infrared spectroscopy on a ba0.6k0.4fe2as2 single crystal with t-c=37 k".Physical review letters 101.10(2008):4. |
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