Disorder- and correlation-driven metal-insulator transitions

Abstract

Metal-insulator transitions driven by disorder (Delta) and/or by electron correlations (U) are investigated within the Anderson-Hubbard model with local binary-alloy disorder using a simple but consistent mean-field approach. The Delta-U phase diagram is derived and discussed for T=0 and finite temperatures.

2 pages, 2 figures, submitted to the SCES'04, Ref.4 updated

References in corpus (4)

• Self-energy-functional approach to systems of correlated electrons
• Variational cluster approach to correlated electron systems in low dimensions
• Self-energy-functional approach: Analytical results and the Mott-Hubbard transition
• Mott-Hubbard metal-insulator transition at non-integer filling

Cited by in corpus (8)

• Dynamical Mean Field Study of the Two-Dimensional Disordered Hubbard Model
• Insulating behavior with spin and charge order in the ionic Hubbard model
• Self-energy-functional theory for systems of interacting electrons with disorder
• Metal-insulator transition in the two-orbital Hubbard model at fractional band fillings: Self-energy functional approach
• Mott and Band Insulator Transitions in the Binary Alloy Hubbard Model
• Analysis of the Disorder-Induced Zero Bias Anomaly in the Anderson-Hubbard Model
• Gutzwiller projection for exclusion of holes: Application to strongly correlated Ionic Hubbard Model and Binary Alloys
• Phase transitions in the binary-alloy Hubbard model: insight from strong-coupling perturbation theory