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Effect of Interatomic Interactions on the Zero‐Bandwidth Hubbard Hamiltonian
Author(s) -
Tu R. S.,
Kaplan T. A.
Publication year - 1974
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.2220630229
Subject(s) - hamiltonian (control theory) , hubbard model , condensed matter physics , zero (linguistics) , zero temperature , physics , bandwidth (computing) , k nearest neighbors algorithm , quantum mechanics , statistical physics , mathematics , computer science , telecommunications , mathematical optimization , linguistics , philosophy , superconductivity , artificial intelligence
We consider the linear‐chain zero‐bandwidth Hubbard Hamiltonian with added nearest‐neighbor interactions, with a magnetic field present. Exact expressions for thermo‐dynamic quantities are obtained in simple closed form for the half‐filled band. The qualitative behavior of the expressions for susceptibility and specific heat is discussed with a view toward recent studies of the organic salt NMP‐TCNQ.