TY - JOUR

T1 - Metal-insulator transitions in the periodic anderson model

AU - Sordi, G.

AU - Amaricci, A.

AU - Rozenberg, M. J.

PY - 2007/11/9

Y1 - 2007/11/9

N2 - 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.

AB - 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.

KW - SYSTEMS

KW - ELECTRONIC-STRUCTURE

KW - TEMPERATURE MOTT TRANSITION

KW - HUBBARD-MODEL

KW - INFINITE DIMENSIONS

KW - MEAN-FIELD THEORY

U2 - 10.1103/PhysRevLett.99.196403

DO - 10.1103/PhysRevLett.99.196403

M3 - Article

VL - 99

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 19

M1 - ARTN 196403

ER -