Metal-insulator transitions in the periodic Anderson model.
We solve the periodic Anderson model in the Mott-Hubbard regime, using dynamical mean field theory. Upon electron doping of the Mott insulator, a metal-insulator transition occurs which is qualitatively similar to that of the single band Hubbard model, namely, with a divergent effective mass and a first order character at finite temperatures. Surprisingly, upon hole doping, the metal-insulator transition is not first order and does not show a divergent mass. Thus, the transition scenario of the single band Hubbard model is not generic for the periodic Anderson model, even in the Mott-Hubbard regime.
Sordi
G
G
Laboratoire de Physique des Solides, CNRS-UMR8502, Université de Paris-Sud, Orsay, France.
Amaricci
A
A
Rozenberg
M J
MJ