Electrical conductivity for strongly correlated and hybridized Hubbard band

Abstract

The magnetic and electrical transport properties of strongły correlated Hubbard band (f-band) hybridizing with the non-correlated conduction band (c-band) was studied. The many-body modeł Hamiltonian was treated within the modified alloy analogy scheme and the resulting one-body problem was solved with the use of coherent potential approximation. Within the Kubo-- Greenwood formalism the dc electrical conductivity for bcc magnetic system was calculated and its variation with temperature and number of electrons was examined for different values of the Coulomb and hybridization (V) coupling constants. We found that the effect of strong correlations and hybridization on the conductivity is similar to that produced by the scattering due to the S—f interaction (spin disorder resistivity).