Unconventional pairing originating from the disconnected Fermi surfaces of superconducting LaFeAsO1-xFx

被引：1497

作者：

Kuroki, Kazuhiko ^{[1
]}

Onari, Seiichiro ^{[2
,3
]}

Arita, Ryotaro ^{[4
]}

Usui, Hidetomo ^{[1
]}

Tanaka, Yukio ^{[2
,3
]}

Kontani, Hiroshi ^{[5
]}

Aoki, Hideo ^{[6
]}

机构：

[1] Univ Electrocommun, Dept Appl Phys & Chem, Tokyo 1828585, Japan

[2] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

[3] CREST JST, Nagoya, Aichi 4648603, Japan

[4] RIKEN, Wako, Saitama 3510198, Japan

[5] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan

[6] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 08期

基金：

日本学术振兴会;

关键词：

D O I：

10.1103/PhysRevLett.101.087004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For a newly discovered iron-based high T-c superconductor LaFeAsO1-xFx, we have constructed a minimal model, where inclusion of all five Fe d bands is found to be necessary. The random-phase approximation is applied to the model to investigate the origin of superconductivity. We conclude that the multiple spin-fluctuation modes arising from the nesting across the disconnected Fermi surfaces realize an extended s-wave pairing, while d-wave pairing can also be another candidate.

引用

页数：4

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