Fermi surface nesting induced strong pairing in iron-based superconductors
文献类型：期刊论文
| 作者 | Terashima, K ; Sekiba, Y ; Bowen, JH ; Nakayama, K ; Kawahara, T ; Sato, T ; Richard, P ; Xu, YM ; Li, LJ ; Cao, GH ; Xu, ZA ; Ding, H ; Takahashi, T |
| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
 |
| 出版日期 | 2009 |
| 卷号 | 106期号:18页码:7330 |
| 关键词 | RESOLVED PHOTOEMISSION-SPECTROSCOPY 43 K GAPS |
| ISSN号 | 0027-8424 |
| 通讯作者 | Terashima, K: Inst Mol Sci, Ultraviolet Synchrotron Orbital Radiat Facil, Okazaki, Aichi 4448585, Japan. |
| 中文摘要 | The discovery of high-temperature superconductivity in iron pnictides raised the possibility of an unconventional superconducting mechanism in multiband materials. The observation of Fermi-surface (FS)-dependent nodeless superconducting gaps suggested that inter-FS interactions may play a crucial role in superconducting pairing. In the optimally hole-doped Ba(0.6)K(0.4)Fe(2)As(2), the pairing strength is enhanced simultaneously (2 Delta/T(c)approximate to 7) on the nearly nested FS pockets, i.e., the inner hole-like (alpha)FS and the 2 hybridized electron-like FSs, whereas the pairing remains weak (2 Delta/T(c)approximate to 3.6) in the poorly nested outer hole-like (beta) FS. Here, we report that in the electron-doped BaFe(1.85)Co(0.15)As(2), the FS nesting condition switches from the alpha to the beta FS due to the opposite size changes for hole- and electron-like FSs upon electron doping. The strong pairing strength (2 Delta/T(c)approximate to 6) is also found to switch to the nested beta FS, indicating an intimate connection between FS nesting and superconducting pairing, and strongly supporting the inter-FS pairing mechanism in the iron-based superconductors. |
| 收录类别 | SCI |
| 资助信息 | JSPS; Transformative Research-Project on Iron Pnictides; Japan Science and Technology Agency (JST); Core Research for Evolutional Science and Technology-JST; Ministry of Education, Culture, Sports, Science and Technology of Japan; Chinese Academy of Sciences; National Science Foundation of China; Ministry of Science and Technology of China; U.S. National Science Foundation |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/38079]  |
| 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 | Terashima, K,Sekiba, Y,Bowen, JH,et al. Fermi surface nesting induced strong pairing in iron-based superconductors[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2009,106(18):7330. |
| APA | Terashima, K.,Sekiba, Y.,Bowen, JH.,Nakayama, K.,Kawahara, T.,...&Takahashi, T.(2009).Fermi surface nesting induced strong pairing in iron-based superconductors.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,106(18),7330. |
| MLA | Terashima, K,et al."Fermi surface nesting induced strong pairing in iron-based superconductors".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 106.18(2009):7330. |
入库方式： OAI收割
来源：物理研究所
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