We review recent experiments that provide evidence for a transition to a conducting phase in two dimensions at very low electron densities. The nature of this phase is not understood, and is currently the focus of intense theoretical and experimental attention.
@article{arxiv.cond-mat/9903292,
title = {Novel Phenomena in Dilute Electron Systems in Two Dimensions},
author = {M. P. Sarachik and S. V. Kravchenko},
journal= {arXiv preprint arXiv:cond-mat/9903292},
year = {2007}
}
Comments
To appear as a Perspective in the Proceedings of the National Academy of Sciences. Reference to Chakravarty, Kivelson, Nayak, and Voelker's paper added (Phil. Mag., in press)