Roles of multiband effects and electron-hole asymmetry in the superconductivity and normal-state properties of Ba(Fe(1-x)Cox)(2)As-2
文献类型：期刊论文
| 作者 | Fang, L ; Luo, HQ ; Cheng, P ; Wang, ZS ; Jia, Y ; Mu, G ; Shen, B ; Mazin, II ; Shan, L ; Ren, C ; Wen, HH |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2009 |
| 卷号 | 80期号:14 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Fang, L (reprint author), Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100190, Peoples R China. |
| 中文摘要 | We report a systematic investigation, together with a theoretical analysis, of the resistivity and Hall effect in single crystals of Ba(Fe1-xCox)(2)As-2 over a wide doping range. We find a surprisingly great disparity between the relaxation rates of the holes and the electrons in excess of one order of magnitude in the low-doping, low-temperature regime. The ratio of the electron to hole mobilities diminishes with temperature and doping (away from the magnetically ordered state) and becomes more conventional. We also find a straightforward explanation of the large asymmetry (compared to cuprates) of the superconducting dome: in the underdoped regime the decisive factor is the competition between antiferromagnetism and superconductivity, while in the overdoped regime the main role is played by degradation of the nesting that weakens the pairing interaction. Our results indicate that spin fluctuations due to interband electron-hole scattering play a crucial role not only in the superconducting pairing but also in the normal transport. |
| 收录类别 | SCI |
| 资助信息 | Natural Science Foundation of China [2006CB60100, 2006CB921107, 2006CB921802]; Chinese Academy of Sciences; ONR |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52236]  |
| 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 | Fang, L,Luo, HQ,Cheng, P,et al. Roles of multiband effects and electron-hole asymmetry in the superconductivity and normal-state properties of Ba(Fe(1-x)Cox)(2)As-2[J]. PHYSICAL REVIEW B,2009,80(14). |
| APA | Fang, L.,Luo, HQ.,Cheng, P.,Wang, ZS.,Jia, Y.,...&Wen, HH.(2009).Roles of multiband effects and electron-hole asymmetry in the superconductivity and normal-state properties of Ba(Fe(1-x)Cox)(2)As-2.PHYSICAL REVIEW B,80(14). |
| MLA | Fang, L,et al."Roles of multiband effects and electron-hole asymmetry in the superconductivity and normal-state properties of Ba(Fe(1-x)Cox)(2)As-2".PHYSICAL REVIEW B 80.14(2009). |
入库方式： OAI收割
来源：物理研究所
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