Electron-boson coupling and two superconducting gaps in optimally electron-doped BaFe1.9Ni0.1As2 single crystals
文献类型：期刊论文
| 作者 | Wang, ZS ; Wang, ZY ; Luo, HQ ; Lu, XY ; Zhu, J ; Li, CH ; Shan, L ; Yang, H ; Wen, HH ; Ren, C |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:6 |
| 关键词 | TUNNELING SPECTROSCOPY IRON PNICTIDES NEUTRON FAMILY |
| ISSN号 | 1098-0121 |
| 通讯作者 | Wang, ZS: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We report an investigation on c-axis point-contact Andreev reflection (PCAR) spectroscopy of optimally doped BaFe1.9Ni0.1As2 single crystals. The PCAR spectrum features the structures of a conductance peak with the energy scale of an electron-boson coupling mode. Quantitative analysis using a generalized Blonder-Tinkham-Klapwijk formalism with two gaps-one isotropic and another angle dependent-resolves a nodeless state in the strong-coupling limit with gap minima on the Fermi surfaces. Using the extracted superconducting energy gap value, a characteristic boson energy Omega(b) is obtained. Our results are consistent with the pairing interaction mediated by the antiferromagnetic spin fluctuations. |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China; Ministry of Science and Technology of China (973 Project) [2011CBA00100, 2012CB821404]; Chinese Academy of Sciences (Project ITSNEM) |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37126]  |
| 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 | Wang, ZS,Wang, ZY,Luo, HQ,et al. Electron-boson coupling and two superconducting gaps in optimally electron-doped BaFe1.9Ni0.1As2 single crystals[J]. PHYSICAL REVIEW B,2012,86(6). |
| APA | Wang, ZS.,Wang, ZY.,Luo, HQ.,Lu, XY.,Zhu, J.,...&Ren, C.(2012).Electron-boson coupling and two superconducting gaps in optimally electron-doped BaFe1.9Ni0.1As2 single crystals.PHYSICAL REVIEW B,86(6). |
| MLA | Wang, ZS,et al."Electron-boson coupling and two superconducting gaps in optimally electron-doped BaFe1.9Ni0.1As2 single crystals".PHYSICAL REVIEW B 86.6(2012). |
入库方式： OAI收割
来源：物理研究所
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