Magnetically mediated superconductivity: Crossover from cubic to tetragonal lattice

Article

关键词: ANTIFERROMAGNETIC SPIN-FLUCTUATION;    VERTEX CORRECTIONS;    WAVE SUPERCONDUCTIVITY;    HUBBARD-MODEL;    FERMI LIQUIDS;    P-WAVE;    FERROMAGNETISM;    SYSTEMS;    COEXISTENCE;    BORDER;   

DOI  :  10.1103/PhysRevB.66.224504

来源: SCIE

【 摘 要 】

We compare predictions of the mean-field theory of superconductivity for nearly antiferromagnetic and nearly ferromagnetic metals for cubic and tetragonal lattices. The calculations are based on the parametrization of an effective interaction arising from the exchange of the magnetic fluctuations and assume that a single band is relevant for superconductivity. The results show that for comparable model parameters, the robustness of magnetic pairing increases gradually as one goes from a cubic structure to a more and more anisotropic tetragonal structure either on the border of antiferromagnetism or ferromagnetism.

【 授权许可】

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