Transport properties of heavy-fermion systems within DMFT/NRG

We investigate the (electronic) transport properties and the characteristic low-temperature scales of heavy-fermion systems (HFS), which are described within the periodic Anderson model (PAM). The PAM is mapped onto an effective single impurity Anderson model (SIAM) by dynamical mean-field theory (DMFT). The SIAM is treated with the numerical renormalisation group (NRG), a non-perturbative method which yields the accurate Kondo temperature scale and low-temperature properties. We calculate the temperature dependence of the resistivity and the thermoelectrical power and are able to reproduce qualitatively the experimental results typical for HFS