Abstract
Considering the fact that the hybridization bands of the two spins are shifted differently by the Zeeman energy, we adopt a two-"band" model to study the field dependence of the anomalous Hall resistance of the heavy-fermion compounds. Starting from the periodic Anderson Hamiltonian, we use the standard large-degeneracy expansion for the slave-boson technique. At the mean-field level, we find that the anisotropyof the hybridization matrix element is crucial in reproducing the correct field dependence of the Hall resistance. This provides further evidence for the feasibility of our previously proposed mechanism for the metamagnetic-like transition. © 1994.