Various Charge-Ordered States in the Extended Hubbard Model with On-Site Attraction in the Zero-Bandwidth Limit

@article{Kapcia2017VariousCS,
  title={Various Charge-Ordered States in the Extended Hubbard Model with On-Site Attraction in the Zero-Bandwidth Limit},
  author={Konrad Jerzy Kapcia and Jan Barański and Stanisław Robaszkiewicz and Andrzej Ptok},
  journal={Journal of Superconductivity and Novel Magnetism},
  year={2017},
  volume={30},
  pages={109-115}
}
The extended Hubbard model in the zero-bandwidth limit with intersite density–density interactions (nearest- and next-nearest-neighbor) is analyzed in the site-dependent mean-field approximation. In this paper, we investigate a case of on-site attraction U<0 for arbitrary values of intersite interactions as well as chemical potential (or electron density). We present ground state and finite temperature phase diagrams obtained in the four-sublattice assumption (e.g., 1D chain, 2D square, or 3D… 

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