Acta Physica Polonica B

Vol. 34, No. 22, February 2003, page 971


DMFT/MPT Studies of the Thermodynamic and Transport Properties of Heavy Fermion Systems

C. Grenzebach, G. Czycholl

The periodic Anderson model (PAM) is mapped on an effective single-impurity model (SIAM) within the dynamical mean-field theory (DMFT). The SIAM is treated in modified perturbation theory (MPT), which is exact up to second order in the Coulomb correlation and reproduces the atomic limit and the lowest moments. We present results for the specific heat, the magnetic susceptibility, the resistivity, the thermopower and the frequency dependent (dynamical) conductivity.

PACS numbers: 71.27.+a, 71.28.+d, 72.15.Qm


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