Superconductivity and charge-density waves in a quasi-one-dimensional spin-gap system

被引：43

作者：

Carr, ST ^{[1
]}

Tsvelik, AM

机构：

[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[2] Univ Oxford, Dept Theoret Phys, Oxford OX1 3NP, England

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.65.195121

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider a model of spin-gapped chains weakly coupled by Josephson and Coulomb interactions. Combining such nonperturbative methods as bosonization and the Bethe ansatz to treat the intrachain interactions with the random phase approximation for the interchain couplings and the first corrections to this, we investigate the phase diagram of this model. The phase diagram shows both charge-density wave ordering and superconductivity. These phases are separated by line of critical points which exhibits an approximate SU(2) symmetry. We consider the effects of a magnetic field on the system. We apply the theory to the material Sr2Ca12Cu24O41 and suggest further experiments.

引用

页码：1 / 10

页数：10

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