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Polaronic Heat Capacity in The Anderson - Hasegawa Model

Manidipa Mitra, P. A. Sreeram, Sushanta Dattagupta

cond-matarXiv:cond-mat/0301285

Abstract

An exact treatment of the Anderson - Hasegawa two - site model, incorporating the presence of superexchange and polarons, is used to compute the heat capacity. The calculated results point to the dominance of the lattice contribution, especially in the ferromagnetic regime. This behavior is in qualitative agreement with experimental findings.

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