Effect of Particle-Hole Asymmetry on the Mott-Hubbard Metal-Insulator Transition

Details Effect of Particle-Hole Asymmetry on the Mott-Hubbard Metal-Insulator Transition Effect of Particle-Hole Asymmetry on the Mott-Hubbard Metal-Insulator Transition

2004-02-05

arxiv.org/abs/cond-mat/0402170v1

Phys. Rev. Lett. 92, 216401 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.92.216401

The Mott-Hubbard metal-insulator transition is one of the most important problems in correlated electron systems. In the past decade, much progress has been made on examining a particle-hole symmetric form of the transition in the Hubbard model with dynamical mean field theory where it was found that the electronic self energy develops a pole at the transition. We examine the particle-hole asymmetric metal-insulator transition in the Falicov-Kimball model, and find that a number of features change when the noninteracting density of states has a finite bandwidth. Since, generically particle-hole symmetry is broken in real materials, our results have an impact on understanding the metal-insulator transition in real materials.

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