Nematic Quantum Criticality Without Order
Strongly Correlated Electrons
2015-05-20 v1 Statistical Mechanics
Abstract
We consider a two-dimensional interacting Fermi system which displays a nematic phase within mean-field theory. The system is analyzed using a non-perturbative renormalization-group scheme. We find that order-parameter fluctuations can suppress the nematic order obtained in mean-field theory even at zero temperature. For a suitable choice of parameters a quantum critical point surrounded by a disordered phase can be realized, giving rise to quantum critical behavior in the absence of an ordered regime in the phase diagram.
Cite
@article{arxiv.1101.1221,
title = {Nematic Quantum Criticality Without Order},
author = {Hiroyuki Yamase and Pawel Jakubczyk and Walter Metzner},
journal= {arXiv preprint arXiv:1101.1221},
year = {2015}
}
Comments
8 pages, 3 figures