D-Wave Superconductivity and Coulomb Correlations in the Two-Dimensional Hubbard Lattice

@article{Cebula1999DWaveSA,
  title={D-Wave Superconductivity and Coulomb Correlations in the Two-Dimensional Hubbard Lattice},
  author={Anna Cebula and Joseph Zielinski},
  journal={Journal of Superconductivity},
  year={1999},
  volume={12},
  pages={649-654}
}
We considered anisotropic superconductivity within the two-dimensional Hubbard model extended by pairing correlations originating from the electron–phonon interaction. To discuss the onset of superconductivity close to the insulator–metal transition, we used the Hubbard I approximation to account for the formation of the insulating gap and see the role of Coulomb correlations for superconducting pairing. It has been shown that the Hubbard I approximation reflects effective pairing interactions… CONTINUE READING