期刊
PHYSICAL REVIEW B
卷 81, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.054502
关键词
-
资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan [20029014]
- Deutsche Forschungsgemeinschaft [SFB 484]
- Grants-in-Aid for Scientific Research [20029014] Funding Source: KAKEN
Using the fluctuation-exchange approximation, we study an effective five-band Hubbard model for iron-pnictide superconductors obtained from the first-principles band structure. We preclude deformations of the Fermi surface due to electronic correlations by introducing a static potential, which mimics the effect of charge relaxation. Evaluating the Eliashberg equation for various dopings and interaction parameters, we find that superconductivity can sustain higher hole than electron doping. Analyzing the symmetry of the superconducting order parameter we observe clear differences between the hole- and electron-doped systems. We discuss the importance of the pnictogen height for superconductivity. Finally, we dissect the pairing interaction into various contributions, which allows us to clarify the relationship between the superconducting transition temperature and the proximity to the antiferromagnetic phase.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据