Study of frequency and temperature dependent electrical resistivity in heavy fermion systems

Abstract

This paper focuses on the interplay of Kondo effect and magnetic ordering through a microscopic theory of the frequency and temperature dependent electrical resistivity as well as the dielectric function in heavy fermion systems. It is then analysed in Kondo lattice model in addition to Heisenberg-type interaction between localized \(f-\)electrons. The model Hamiltonian is solved by using mean-field approximation (MFA). The study of electrical resistivity is presented by considering phonon interaction to bare \(f\)-electrons, \(c\)-electrons and to the hybridization between \(c\)- and \(f\)-electrons and phonon Hamiltonian in harmonic approximation. An attempt has been made to calculate the temperature and frequency dependent electrical resistivity to study the peaks at \(T_{K}\) (Kondo temperature) and \(T_{{ Cor}}\) (correlation temperature). The evolution of peaks exhibit change in slopes. These findings are compared to the experimental data.