Universality of superconducting gaps in overdoped Ba0.3K0.7Fe2As2 observed by angle-resolved photoemission spectroscopy
文献类型：期刊论文
| 作者 | Nakayama, K ; Sato, T ; Richard, P ; Xu, YM ; Kawahara, T ; Umezawa, K ; Qian, T ; Neupane, M ; Chen, GF ; Ding, H ; Takahashi, T |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2011 |
| 卷号 | 83期号:2 |
| 关键词 | BA0.6K0.4FE2AS2 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Nakayama, K (reprint author), Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. |
| 中文摘要 | We have performed angle-resolved photoemission spectroscopy on the overdoped Ba0.3K0.7Fe2As2 superconductor (T-c = 22 K). We demonstrate that the superconducting (SC) gap on each Fermi surface (FS) is nearly isotropic whereas the gap value varies from 4.4 to 7.9 meV on different FSs. By comparing with under-and optimally doped Ba1-xKxFe2As2, we find that the gap value on each FS nearly scales with T-c over a wide doping range (0.25 <= x <= 0.7). Although the FS volume and the SC gap magnitude are strongly doping dependent, the multiple nodeless gaps can be commonly fitted by a single gap function assuming pairing up to the second nearest neighbor, suggesting the universality of the short-range pairing states with the s(+/-)-wave symmetry. |
| 收录类别 | SCI |
| 资助信息 | Japan Society for the Promotion of Science (JSPS); TRiP-JST; CREST-JST; Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan; Chinese Academy of Sciences (CAS); National Science Foundation of China (NSFC); Ministry of Science and Technology (MOST) of China; US National Science Foundation (NSF) |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46431]  |
| 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. Universality of superconducting gaps in overdoped Ba0.3K0.7Fe2As2 observed by angle-resolved photoemission spectroscopy[J]. PHYSICAL REVIEW B,2011,83(2). |
| APA | Nakayama, K.,Sato, T.,Richard, P.,Xu, YM.,Kawahara, T.,...&Takahashi, T.(2011).Universality of superconducting gaps in overdoped Ba0.3K0.7Fe2As2 observed by angle-resolved photoemission spectroscopy.PHYSICAL REVIEW B,83(2). |
| MLA | Nakayama, K,et al."Universality of superconducting gaps in overdoped Ba0.3K0.7Fe2As2 observed by angle-resolved photoemission spectroscopy".PHYSICAL REVIEW B 83.2(2011). |
入库方式： OAI收割
来源：物理研究所
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