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Perturbation Expansion for the Asymmetric Anderson Hamiltonian II. General Asymmetry
Author(s) -
Horvatić B.,
Zlatic V.
Publication year - 1982
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.2221110106
Subject(s) - asymmetry , hamiltonian (control theory) , perturbation (astronomy) , coulomb , physics , condensed matter physics , seebeck coefficient , electronic correlation , electron , anderson impurity model , quantum mechanics , quantum electrodynamics , electrical resistivity and conductivity , mathematics , mathematical optimization
Abstract The asymmetric single‐orbital Anderson model is studied by the rapidly convergent perturbation method of Yosida and Yamada. Low‐temperature specific heat, resistivity, thermoelectric power, and renormalized position of the virtual bound state are evaluated to the second order in Coulomb correlation for arbitrary asymmetry. The effect of asymmetry on the properties of the model is discussed. It is found that the correlation effects are most pronounced in the case of electron–hole symmetry and are strongly reduced with the increase of asymmetry.