Vertex corrections to the mean-field electrical conductivity in strongly disordered electron systems
Disordered Systems and Neural Networks
2013-04-23 v1 Strongly Correlated Electrons
Abstract
Mean-field theory of non-interacting disordered electron systems is widely and successfully used to describe equilibrium properties of alloys in the whole range of disorder strengths. It, however, fails to take into account effects of quantum coherence and localizing back-scattering effects when applied to transport phenomena. We present an approximate scheme extending the mean-field theory for one-electron properties in that it offers a formula for the two-particle vertex and the electrical conductivity non-perturbatively including the leading-order vertex corrections in a way that the approximation remains consistent and the conductivity non-negative in all disorder regimes.
Keywords
Cite
@article{arxiv.1209.6128,
title = {Vertex corrections to the mean-field electrical conductivity in strongly disordered electron systems},
author = {V. Pokorny and V. Janis},
journal= {arXiv preprint arXiv:1209.6128},
year = {2013}
}
Comments
10 pages, 7 figures