V. A. Ivanov 2000 Europhys. Lett. 52 351 doi:10.1209/epl/i2000-00446-x
V. A. Ivanov
Show affiliationsWe 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.
Issue 3 (1 November 2000)
Received 2 May 2000, accepted for publication 12 September 2000, in final form 12 September 2000
V. A. Ivanov 2000 Europhys. Lett. 52 351
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