From semiconductors to superconductors: a simple model for pseudogaps
Superconductivity
2009-10-31 v1 Strongly Correlated Electrons
Abstract
We consider a two dimensional semiconductor with a local attraction among the carriers. We study the ground state of this system as a function of the semiconductor gap. We find a direct transition from a superconducting to an insulating phase for no doping at a critical value, the single particle excitations being always gapped. For finite doping we find a smooth crossover. We calculate the critical temperature due to both the particle excitations and the Berezinkii-Kosterlitz-Thouless transition.
Cite
@article{arxiv.cond-mat/9902273,
title = {From semiconductors to superconductors: a simple model for pseudogaps},
author = {P. Nozieres and F. Pistolesi},
journal= {arXiv preprint arXiv:cond-mat/9902273},
year = {2009}
}
Comments
14 pages. Accepted for publication on Eur. Phys. Jour. B