High Temperature Specific Heat of Mixed-Valence Compounds
The periodic Anderson model (PAM) essentially describes a mixed valence compound when the chemical potential of the system pins to the f-level energy E. This makes the empty and singly occupied f-shell degenerate resulting in valence fluctuations. The doubly occupied f-shell can be safely ignored due to large Coulomb repulsion U. In this paper we calculate the specific heat of mixed valence compounds using this model.
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