Damping effects and the metal-insulator transition in the two-dimensional electron gas
Strongly Correlated Electrons
2009-11-11 v2
Abstract
The damping of single-particle degrees of freedom in strongly correlated two-dimensional Fermi systems is analyzed. Suppression of the scattering amplitude due to the damping effects is shown to play a key role in preserving the validity of the Landau-Migdal quasiparticle picture in a region of a phase transition, associated with the divergence of the quasiparticle effective mass. The results of the analysis are applied to elucidate the behavior of the conductivity of the two-dimensional dilute electron gas in the density region where it undergoes a metal-insulator transition.
Cite
@article{arxiv.cond-mat/0501427,
title = {Damping effects and the metal-insulator transition in the two-dimensional electron gas},
author = {V. A. Khodel and M. V. Zverev and J. W. Clark},
journal= {arXiv preprint arXiv:cond-mat/0501427},
year = {2009}
}
Comments
7 pages, 6 figures. Improved and slightly extended version: new paragraph about Hall effect + new Fig.6