s-wave superconductivity with orbital-dependent sign change in checkerboard models of iron-based superconductors
文献类型：期刊论文
| 作者 | Lu, XL ; Fang, C ; Tsai, WF ; Jiang, YJ ; Hu, JP |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 85期号:5 |
| 关键词 | PNICTIDES |
| ISSN号 | 1098-0121 |
| 通讯作者 | Lu, XL (reprint author), Zhejiang Normal Univ, Ctr Stat & Theoret Condensed Matter Phys, Jinhua 321004, Peoples R China. |
| 中文摘要 | We study three different multiorbital models for iron-based superconductors (iron SCs) in the solvable limit of weakly coupled square plaquettes. The strongest superconducting (SC) pairing is in the A(1g) s-wave channel, and its development is correlated with the emergence of the next-nearest-neighbor antiferromagnetism (NNN AFM). Increasing the NNN AFM interactions can drastically enhance the s-wave SC pairing. For the models with more than two orbitals, our study suggests that the signs of the intraorbital pairing superconducting order of the d(xy) and the d(xz) (or d(yz)) orbitals must be opposite. Such a sign difference stems from the intrinsic symmetry properties of interorbital hoppings and might, in the homogeneous case, lead to the sign change of the SC orders between the hole Fermi pockets at the Gamma and M points in the unfolded Brillouin zone. |
| 收录类别 | SCI |
| 资助信息 | National Basic Research (973) Program of China [2012CB821400]; National Science Foundation of China [NSFC-11190024, 11004174]; NSC in Taiwan [100-2112-M-110-001-MY2]; NSF of Zhejiang [Y7080383] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/54248]  |
| 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 | Lu, XL,Fang, C,Tsai, WF,et al. s-wave superconductivity with orbital-dependent sign change in checkerboard models of iron-based superconductors[J]. PHYSICAL REVIEW B,2012,85(5). |
| APA | Lu, XL,Fang, C,Tsai, WF,Jiang, YJ,&Hu, JP.(2012).s-wave superconductivity with orbital-dependent sign change in checkerboard models of iron-based superconductors.PHYSICAL REVIEW B,85(5). |
| MLA | Lu, XL,et al."s-wave superconductivity with orbital-dependent sign change in checkerboard models of iron-based superconductors".PHYSICAL REVIEW B 85.5(2012). |
入库方式： OAI收割
来源：物理研究所
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