Metal-insulator transition in two-dimensional electron systems
Abstract
The interplay between strong Coulomb interactions and randomness has been a long-standing problem in condensed matter physics. According to the scaling theory of localization, in two-dimensional systems of noninteracting or weakly interacting electrons, the ever-present randomness causes the resistance to rise as the temperature is decreased, leading to an insulating ground state. However, new evidence has emerged within the past decade indicating a transition from insulating to metallic phase in two-dimensional systems of strongly interacting electrons. We review earlier experiments that demonstrate the unexpected presence of a metallic phase in two dimensions, and present an overview of recent experiments with emphasis on the anomalous magnetic properties that have been observed in the vicinity of the transition.
Cite
@article{arxiv.cond-mat/0309140,
title = {Metal-insulator transition in two-dimensional electron systems},
author = {S. V. Kravchenko and M. P. Sarachik},
journal= {arXiv preprint arXiv:cond-mat/0309140},
year = {2007}
}
Comments
As published