PERTURBED BIFURCATIONS IN THE BCS GAP EQUATION

Article

关键词: HIGH-TEMPERATURE SUPERCONDUCTIVITY;    HIGH-TC SUPERCONDUCTIVITY;    ANGLE-RESOLVED PHOTOEMISSION;    TRANSITION;    MECHANISM;    SPECTRA;    MODEL;   

DOI  :  10.1103/PhysRevB.45.7360

来源: SCIE

【 摘 要 】

The anisotropic BCS gap equation is applied to a tight-binding model of layered high-temperature superconductors. The possible solutions have s-, d-, and mixed s- and d-wave symmetries using nearest-neighbor intralayer singlet pairing interaction of the same strength in the x and y directions. The transitions from d- or s- to mixed s- and d-wave solutions result from pitchfork bifurcations. In the case of slightly different pairing strength in the x and y directions, perturbed pitchfork bifurcations emerge, leading to a dramatic change in the physical properties of the superconducting state.

【 授权许可】

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