Resistivity and thermopower of heavy-fermion systems

The characteristic temperature dependence of the electronic transport properties of heavy-fermion systems can be reproduced within the self-consistent second-order U-perturbation treatment of the periodic Anderson model. This approach, within which explicit calculations are possible in the limit of a large spatial dimension d for correlated lattice electrons, properly fulfills the Luttinger sum rules. Here we present the first explicit calculations of transport quantities and show that an excellent reproduction of the typical experimental results is possible by simply using the d=∞ result for d=3.