Novel metallic behavior in two dimensions
Condensed Matter
2009-10-31 v3
Abstract
Experiments on a sufficiently disordered two-dimensional (2D) electron system in silicon reveal a new and unexpected kind of metallic behavior, where the conductivity decreases as \sigma (n_s,T)=\sigma (n_s,T=0)+A(n_s)T^2 (n_s-carrier density) to a non-zero value as temperature T->0. In 2D, the existence of a metal with d\sigma/dT>0 is very surprising. In addition, a novel type of a metal-insulator transition obtains, which is unlike any known quantum phase transition in 2D.
Cite
@article{arxiv.cond-mat/9903236,
title = {Novel metallic behavior in two dimensions},
author = {X. G. Feng and Dragana Popovic and S. Washburn and V. Dobrosavljevic},
journal= {arXiv preprint arXiv:cond-mat/9903236},
year = {2009}
}
Comments
4 pages, 4 figures, revtex; includes many more details