Angle-Resolved Photoemission Spectroscopy of the Iron-Chalcogenide Superconductor Fe1.03Te0.7Se0.3: Strong Coupling Behavior and the Universality of Interband Scattering
文献类型：期刊论文
| 作者 | Nakayama, K ; Sato, T ; Richard, P ; Kawahara, T ; Sekiba, Y ; Qian, T ; Chen, GF ; Luo, JL ; Wang, NL ; Ding, H ; Takahashi, T |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2010 |
| 卷号 | 105期号:19 |
| 关键词 | BA0.6K0.4FE2AS2 |
| ISSN号 | 0031-9007 |
| 通讯作者 | Nakayama, K: Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. |
| 中文摘要 | We have performed angle-resolved photoemission spectroscopy of the iron-chalcogenide superconductor Fe1.03Te0.7Se0.3 to investigate the electronic structure relevant to superconductivity. We observed a holelike Fermi surface (FS) and an electronlike FS at the Brillouin zone center and corner, respectively, which are nearly nested by the Q similar to (pi, pi) wave vector. We do not find evidence for the nesting instability with Q similar to (pi + delta, 0) reminiscent of the antiferromagnetic order in the parent compound Fe1+yTe. We have observed an isotropic superconducting (SC) gap along the holelike FS with the gap size Delta of similar to 4 meV (2 Delta/k(B)T(c) similar to 7), demonstrating the strong-coupling superconductivity. The observed similarity of low-energy electronic excitations between iron-chalcogenides and iron-arsenides strongly suggests that common interactions which involve Q similar to (pi, pi) scattering are responsible for the SC pairing. |
| 收录类别 | SCI |
| 资助信息 | JSPS; KEK-PF [2009S2-005]; TRiP-JST; JST-CREST; MEXT of Japan; CAS; NSF; MOST of China; NSF of US |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33745]  |
| 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 | Nakayama, K,Sato, T,Richard, P,et al. Angle-Resolved Photoemission Spectroscopy of the Iron-Chalcogenide Superconductor Fe1.03Te0.7Se0.3: Strong Coupling Behavior and the Universality of Interband Scattering[J]. PHYSICAL REVIEW LETTERS,2010,105(19). |
| APA | Nakayama, K.,Sato, T.,Richard, P.,Kawahara, T.,Sekiba, Y.,...&Takahashi, T.(2010).Angle-Resolved Photoemission Spectroscopy of the Iron-Chalcogenide Superconductor Fe1.03Te0.7Se0.3: Strong Coupling Behavior and the Universality of Interband Scattering.PHYSICAL REVIEW LETTERS,105(19). |
| MLA | Nakayama, K,et al."Angle-Resolved Photoemission Spectroscopy of the Iron-Chalcogenide Superconductor Fe1.03Te0.7Se0.3: Strong Coupling Behavior and the Universality of Interband Scattering".PHYSICAL REVIEW LETTERS 105.19(2010). |
入库方式： OAI收割
来源：物理研究所
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