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.
@article{arxiv.cond-mat/0406266,
title = {Disorder- and correlation-driven metal-insulator transitions},
author = {Matthias Balzer and Michael Potthoff},
journal= {arXiv preprint arXiv:cond-mat/0406266},
year = {2009}
}
Comments
2 pages, 2 figures, submitted to the SCES'04, Ref.4 updated