Unexpected weak spatial variation in the local density of states induced by individual Co impurity atoms in superconducting Na(Fe1-xCox)As crystals revealed by scanning tunneling spectroscopy
文献类型：期刊论文
| 作者 | Yang, H ; Wang, ZY ; Fang, DL ; Li, S ; Kariyado, T ; Chen, GF ; Ogata, M ; Das, T ; Balatsky, AV ; Wen, HH |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:21 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Yang, H (reprint author), Nanjing Univ, Ctr Superconducting Phys & Mat, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China. |
| 中文摘要 | We use spatially resolved scanning tunneling spectroscopy in Na(Fe1-xCox)As to investigate the impurity effect induced by Co dopants. The Co impurities are successfully identified, and the spatial distributions of local density of state at different energies around these impurities are investigated. It is found that the spectrum shows negligible spatial variation at different positions near the Co impurity, although there is a continuum of the in-gap states which lifts the zero-bias conductance to a finite value. Our results put constraints on the S +/- and S++ models and sharpen the debate on the role of scattering potentials induced by the Co dopants. DOI: 10.1103/PhysRevB.86.214512 |
| 收录类别 | SCI |
| 资助信息 | Ministry of Science and Technology of China [2011CBA00102, 2012CB821403, 2010CB923002]; NSF; PAPD of China; US DOE [DE-AC52-06NA25396]; Office of Science (BES) |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46405]  |
| 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 | Yang, H,Wang, ZY,Fang, DL,et al. Unexpected weak spatial variation in the local density of states induced by individual Co impurity atoms in superconducting Na(Fe1-xCox)As crystals revealed by scanning tunneling spectroscopy[J]. PHYSICAL REVIEW B,2012,86(21). |
| APA | Yang, H.,Wang, ZY.,Fang, DL.,Li, S.,Kariyado, T.,...&Wen, HH.(2012).Unexpected weak spatial variation in the local density of states induced by individual Co impurity atoms in superconducting Na(Fe1-xCox)As crystals revealed by scanning tunneling spectroscopy.PHYSICAL REVIEW B,86(21). |
| MLA | Yang, H,et al."Unexpected weak spatial variation in the local density of states induced by individual Co impurity atoms in superconducting Na(Fe1-xCox)As crystals revealed by scanning tunneling spectroscopy".PHYSICAL REVIEW B 86.21(2012). |
入库方式： OAI收割
来源：物理研究所
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