Microscopic description of d-wave superconductivity by Van Hove nesting in the Hubbard model

  • J. González
  • Published 2000


We devise a computational approach to the Hubbard model that captures the strong coupling dynamics arising when the Fermi level is at a Van Hove singularity in the density of states. We rely on an approximate degeneracy among the many-body states accounting for the main instabilities of the system ~antiferromagnetism, d-wave superconductivity!. The Fermi… (More)


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