We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Various Charge-Ordered States in the Extended Hubbard Model with On-Site Attraction in the Zero-Bandwidth Limit.
- Authors
Ptok, Andrzej; Kapcia, Konrad; Barański, Jan; Robaszkiewicz, Stanisław
- Abstract
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 body-centered cubic lattices). Our results for U<0 show that in the system various phases emerge: three different types of charge-ordered phases (checkerboard, laminar/stripe, and four-subllatice-type) and non-ordered phases.
- Subjects
HUBBARD model; ELECTRON density; MULTIFERROIC materials; BANDWIDTHS; PHASE separation
- Publication
Journal of Superconductivity & Novel Magnetism, 2017, Vol 30, Issue 1, p109
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-016-3828-0