Gossamer superconductivity near antiferromagnetic mott insulator in layered organic conductors

被引：67

作者：

Gan, JY ^{[1
]}

Chen, Y

Su, ZB

Zhang, FC

机构：

[1] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China

[2] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[3] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[4] Zhejiang Univ, Dept Phys, Hangzhou, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.94.067005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Layered organic superconductors are on the verge of the Mott insulator. We use the Gutzwiller variational method to study a two-dimensional Hubbard model including a spin exchange coupling term as a minimal model for the compounds. The ground state is found to be a Gossamer superconductor at small on-site Coulomb repulsion U and an antiferromagnetic Mott insulator at large U, separated by a first order phase transition. Our theory is qualitatively consistent with major experiments reported in organic superconductors.

引用

页数：4

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