Electronic correlations in a two-level dimer

The exact solution for the full electronic Hamiltonian for a two-level dimer is obtained. The parameter constellation (roughly 20) is reparametrized via orthogonal Gaussian atomic orbitals, yielding a five-parameter model. With the dimer embedded in a thermal bath, the specific heat and several temp...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2001-05, Vol.226, p.105-106
Main Authors: A. Macedo, Lazaro, E. Lagos, Roberto
Format: Article
Language:English
Subjects:
Correlated electron system
Dynamic susceptibility
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Summary:The exact solution for the full electronic Hamiltonian for a two-level dimer is obtained. The parameter constellation (roughly 20) is reparametrized via orthogonal Gaussian atomic orbitals, yielding a five-parameter model. With the dimer embedded in a thermal bath, the specific heat and several temperature-dependent dynamical susceptibilities are computed.
ISSN:0304-8853
DOI:10.1016/S0304-8853(00)01135-5