Flatband localization in the Anderson-Falicov-Kimball model
A. M. C. Souza, H. J. Herrmann
TL;DR
This paper investigates how flatbands induce insulator-metal-insulator transitions in the Anderson-Falicov-Kimball model using dynamical mean-field theory, revealing that interactions promote delocalization and highlighting discrepancies with earlier studies.
Contribution
It applies dynamical mean-field theory to analyze flatband effects in the Anderson-Falicov-Kimball model, providing new insights into interaction-driven delocalization and addressing previous disagreements.
Findings
Interactions enhance electron delocalization.
Quantitative differences from previous studies.
Flatband induces multiple insulator-metal transitions.
Abstract
The insulator-metal-insulator transition caused by a flatband is analyzed within dynamical mean-field theory using the Anderson-Falicov-Kimball model. We observe quantitative disagreement between the present approach and previous results. The presence of interactions enhances delocalization.
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