Metal-Insulator transitions in the periodic Anderson model

Details Metal-Insulator transitions in the periodic Anderson model Metal-Insulator transitions in the periodic Anderson model

2008-09-20

arxiv.org/abs/0809.3519v1

Physical Review Letter, 99, 196403 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.99.196403

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.

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