Superconductor to spin-density-wave transition in quasi-one-dimensional metals with Ising anisotropy

Article

关键词: ELECTRONIC CORRELATIONS;    NUCLEAR-RELAXATION;    ORGANIC CONDUCTORS;    SYMMETRY;   

DOI  :  10.1103/PhysRevB.66.134509

来源: SCIE

【 摘 要 】

We study a mechanism for superconductivity in quasi-one-dimensional materials with Ising anisotropy. In an isolated chain Ising anisotropy opens a spin gap; if interchain coupling is sufficiently weak, single particle hopping is suppressed and the physics of coupled chains is controlled by a competition between pair hopping and exchange interaction. Spin-density-wave and triplet superconductivity phases are found separated by a first-order phase transition. For particular parameter values a second-order transition described by SO(4) symmetry is found.

【 授权许可】

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