Tricritical behaviour of Ising spin glasses with charge fluctuations
Condensed Matter
2009-10-28 v2
Abstract
We show that tricritical points displaying unusal behaviour exist in phase diagrams of fermionic Ising spin glasses as the chemical potential or the filling assumes characteristic values. Exact results for infinite range interaction and a one loop renormalization group analysis of thermal tricritical fluctuations for finite range models are presented. Surprising similarities with zero temperature transitions and a new tricritical point of metallic quantum spin glasses are derived.
Keywords
Cite
@article{arxiv.cond-mat/9604015,
title = {Tricritical behaviour of Ising spin glasses with charge fluctuations},
author = {B. Rosenow and R. Oppermann},
journal= {arXiv preprint arXiv:cond-mat/9604015},
year = {2009}
}
Comments
4 pages, 1 Postscript figure, minor changes