Mott-Hubbard transition versus Anderson localization in correlated electron systems with disorder.
The phase diagram of correlated, disordered electron systems is calculated within dynamical mean-field theory using the geometrically averaged ("typical") local density of states. Correlated metal, Mott insulator, and Anderson insulator phases, as well as coexistence and crossover regimes, are identified. The Mott and Anderson insulators are found to be continuously connected.
Byczuk
Krzysztof
K
Institute of Theoretical Physics, Warsaw University, ulica Hoza 69, PL-00-681 Warszawa, Poland.
Hofstetter
Walter
W
Vollhardt
Dieter
D