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Vertical and diagonal stripes in the extended Hubbard model
Author(s) -
Raczkowski M.,
Normand B.,
Oleś A. M.
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200301683
Subject(s) - phase diagram , diagonal , coulomb , hubbard model , condensed matter physics , k nearest neighbors algorithm , physics , stability (learning theory) , anisotropy , space (punctuation) , phase (matter) , quantum mechanics , geometry , mathematics , superconductivity , electron , computer science , artificial intelligence , machine learning , operating system
We extend previous real‐space Hartree–Fock studies of static stripe stability to determine the phase diagram of the Hubbard model with anisotropic nearest‐neighbor hopping t , by varying the on‐site Coulomb repulsion U and investigating locally stable structures for representative hole doping levels x = 1/8 and x = 1/6. We also report the changes in stability of these stripes in the extended Hubbard model due to next‐neighbor hopping t ′ and to a nearest‐neighbor Coulomb interaction V .