KONDO EFFECT IN DISORDERED-SYSTEMS

We consider a system of dilute magnetic impurities placed in a disordered metal, and examine the modifications of the Kondo temperature T(K) due to the presence of disorder. Our calculations, based on a slave-boson approach, show that the probability distribution P(T(K)) for Kondo temperatures can be related to the local-density-of-states fluctuations induced by localization effects. The resulting P(T(K)) is shown to be sufficiently singular to induce diverging magnetic susceptibility chi as T --> 0, a non-Fermi-liquid behavior.