Non-Fermi liquid behaviour and superconductivity in the dissipative model
Abstract
We study an exactly-solvable model which shows a zero-temperature transition from a non-Fermi liquid to a Fermi liquid as a function of particle density. The quantum critical point separating these two states is not associated with the usual ordering transition of a bosonic degree of freedom. We analyze the properties of this critical point in terms of an effective density of states, and we use this concept to generalize this transition to a class of related quantum critical points. We study the superconducting instability of the low-density (non-Fermi liquid) regime and we show that it has an enhanced pair susceptibility relative to the Fermi liquid. We comment on the applicability of our results to low-carrier density superconductors.
Cite
@article{arxiv.cond-mat/0103191,
title = {Non-Fermi liquid behaviour and superconductivity in the dissipative model},
author = {P. C. Howell and A. J. Schofield},
journal= {arXiv preprint arXiv:cond-mat/0103191},
year = {2016}
}
Comments
4 pages, 1 figure, submitted to PRL