Anisotropic superconductivity driven by kinematic interaction

2000 EDP Sciences
, , Citation V. A. Ivanov 2000 EPL 52 351 DOI 10.1209/epl/i2000-00446-x

0295-5075/52/3/351

Abstract

We have analysed the effect of kinematic pairing on the symmetry of superconducting order parameter for a square lattice in the frame of the strongly correlated Hubbard model. It is argued that in the first perturbation order the kinematic interaction renormalizes the Hubbard-I dispersions and provides at low doping the mixed singlet (s + s*)-wave superconductivity, giving way at higher doping to the triplet p-wave superconductivity. The obtained phase diagram depends only on the hopping integral parameter. The influence of the Coulomb repulsion on the kinematic superconducting pairing has been estimated. The (s + s*)-wave gap and the thermodynamic critical magnetic field have been derived.

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10.1209/epl/i2000-00446-x