Metastability and Phase Separation in a Simple Model of a Superconductor with Extremely Short Coherence Length

@article{Kapcia2014MetastabilityAP,
  title={Metastability and Phase Separation in a Simple Model of a Superconductor with Extremely Short Coherence Length},
  author={Konrad Jerzy Kapcia},
  journal={Journal of Superconductivity and Novel Magnetism},
  year={2014},
  volume={27},
  pages={913-917}
}
  • K. Kapcia
  • Published 31 October 2014
  • Physics
  • Journal of Superconductivity and Novel Magnetism
We present studies of the atomic limit of the extended Hubbard model with pair hopping for arbitrary electron density and arbitrary chemical potential. The Hamiltonian consists of (i) the effective on-site interaction U and (ii) the intersite charge exchange term I, determining the hopping of electron pairs between nearest-neighbour sites. In the analysis of the phase diagrams and thermodynamic properties of this model we treat the intersite interactions within the mean-field approximation. In… Expand
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