Anisotropic but Nodeless Superconducting Gap in the Presence of Spin-Density Wave in Iron-Pnictide Superconductor NaFe1-xCoxAs
文献类型：期刊论文
| 作者 | Ge, QQ ; Ye, ZR ; Xu, M ; Zhang, Y ; Jiang, J ; Xie, BP ; Song, Y ; Zhang, CL ; Dai, PC ; Feng, DL |
| 刊名 | PHYSICAL REVIEW X
 |
| 出版日期 | 2013 |
| 卷号 | 3期号:1 |
| ISSN号 | 2160-3308 |
| 通讯作者 | Ge, QQ (reprint author), Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China. |
| 中文摘要 | The coexisting regime of spin-density wave (SDW) and superconductivity in iron pnictides represents a novel ground state. We have performed high-resolution angle-resolved photoemission measurements on NaFe1-xCoxAs (x = 0.0175) in this regime and revealed its distinctive electronic structure, which provides some microscopic understandings of its behavior. The SDW signature and the superconducting gap are observed on the same bands, illustrating the intrinsic nature of the coexistence. However, because the SDW and superconductivity are manifested in different parts of the band structure, their competition is nonexclusive. Particularly, we find that the gap distribution is anisotropic and nodeless, in contrast to the isotropic superconducting gap observed in a SDW-free NaFe1-xCoxAs (x = 0.045), which puts strong constraints on theory. DOI.10.1103/PhysRevX.3.011020 |
| 资助信息 | National Science Foundation of China; National Basic Research Program of China (973 Program) [2012CB921400, 2011CB921802, 2011CBA00112]; U.S. DOE, BES [DE-FG02-05ER46202] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/56774]  |
| 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 | Ge, QQ,Ye, ZR,Xu, M,et al. Anisotropic but Nodeless Superconducting Gap in the Presence of Spin-Density Wave in Iron-Pnictide Superconductor NaFe1-xCoxAs[J]. PHYSICAL REVIEW X,2013,3(1). |
| APA | Ge, QQ.,Ye, ZR.,Xu, M.,Zhang, Y.,Jiang, J.,...&Feng, DL.(2013).Anisotropic but Nodeless Superconducting Gap in the Presence of Spin-Density Wave in Iron-Pnictide Superconductor NaFe1-xCoxAs.PHYSICAL REVIEW X,3(1). |
| MLA | Ge, QQ,et al."Anisotropic but Nodeless Superconducting Gap in the Presence of Spin-Density Wave in Iron-Pnictide Superconductor NaFe1-xCoxAs".PHYSICAL REVIEW X 3.1(2013). |
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来源：物理研究所
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