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On the Influence of the Magnetic Ordering on Thermodynamic and Electrical Properties in the Hubbard Model
Author(s) -
Schumacher W.
Publication year - 1983
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.2221200219
Subject(s) - antiferromagnetism , hubbard model , condensed matter physics , electrical resistivity and conductivity , spin (aerodynamics) , physics , specific heat , materials science , thermodynamics , quantum mechanics , superconductivity
The specific heat and the electrical conductivity are calculated in the Hubbard model in Hartree‐Fock approximation (HFA) for an antiferromagnetic ordering and for arbitrary band filling using the antiferromagnetic solutions which are found in HFA and which are established with respect to the existence of double solutions of the Néel temperature in the framework of a theory taking into account fluctuations of the spin.