Metal-Insulator Transition in Two- and Three-Dimensional Logarithmic Plasmas
Abstract
We consider scaling of the mean square dipole moments in a plasma with logarithmic interactions in a two- and three-dimensional system. In both cases, we establish the existence of a low-temperature regime where the mean square dipole moment does not scale with system size and a high-temperature regime where it does scale with system size. Thus, there is a nonanalytic change in the polarizability of the system as a function of temperature, and hence a metal-insulator transition in both cases. The relevance of this transition in three dimensions to quantum phase transitions in 2+1-dimensional systems is briefly discussed.
Cite
@article{arxiv.cond-mat/0311524,
title = {Metal-Insulator Transition in Two- and Three-Dimensional Logarithmic Plasmas},
author = {S. Kragset and A. Sudbo and F. S. Nogueira},
journal= {arXiv preprint arXiv:cond-mat/0311524},
year = {2007}
}
Comments
4 pages, 2 figures. One figure removed, replaced by analytical results. Accepted for publication in Physical Review Letters