Nodal gap in Fe-based layered superconductor LaO(0.9)F(0.1-delta)FeAs probed by specific heat measurements
文献类型：期刊论文
| 作者 | Mu, G ; Zhu, XY ; Fang, L ; Shan, L ; Ren, C ; Wen, HH |
| 刊名 | CHINESE PHYSICS LETTERS
 |
| 出版日期 | 2008 |
| 卷号 | 25期号:6页码:2221 |
| 关键词 | TEMPERATURE SPECIFIC-HEAT ENERGY QUASI-PARTICLES D-WAVE SUPERCONDUCTORS DENSITY-OF-STATES CUPRATE SUPERCONDUCTORS VORTEX YBA2CU3O7-DELTA |
| ISSN号 | 0256-307X |
| 通讯作者 | Wen, HH (reprint author), Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100190, Peoples R China. |
| 中文摘要 | We report the specific heat measurements on the newly discovered Fe-based layered LaO(0.9)F(0.1-delta)FeAs superconductor with the onset transition temperature Tc approximate to 28 K. A nonlinear magnetic field dependence of the electronic specific heat coeffcient gamma(H) has been found in the low temperature limit, which is consistent with the prediction for a nodal superconductor. The maximum gap value Delta(0) approximate to 3.4 +/- 0.5 meV is derived by analysing gamma(H) based on the d-wave model. We also detected the electronic specific heat difference between 9T and 0T in a wide temperature range, a specific heat anomaly can be clearly observed near T(c). The Debye temperature of our sample is determined to be about 315.7 K. Our results suggest an unconventional mechanism for this new superconductor. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/49927]  |
| 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 | Mu, G,Zhu, XY,Fang, L,et al. Nodal gap in Fe-based layered superconductor LaO(0.9)F(0.1-delta)FeAs probed by specific heat measurements[J]. CHINESE PHYSICS LETTERS,2008,25(6):2221. |
| APA | Mu, G,Zhu, XY,Fang, L,Shan, L,Ren, C,&Wen, HH.(2008).Nodal gap in Fe-based layered superconductor LaO(0.9)F(0.1-delta)FeAs probed by specific heat measurements.CHINESE PHYSICS LETTERS,25(6),2221. |
| MLA | Mu, G,et al."Nodal gap in Fe-based layered superconductor LaO(0.9)F(0.1-delta)FeAs probed by specific heat measurements".CHINESE PHYSICS LETTERS 25.6(2008):2221. |
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来源：物理研究所
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