Quantum Spin Glasses
Condensed Matter
2009-10-28 v1
Abstract
Ising spin glasses in a transverse field exhibit a zero temperature quantum phase transition, which is driven by quantum rather than thermal fluctuations. They constitute a universality class that is significantly different from the classical, thermal phase transitions. Most interestingly close to the transition in finite dimensions a quantum Griffiths phase leads to drastic consequences for various physical quantities: for instance diverging magnetic susceptibilities are observable over a whole range of transverse field values in the disordered phase.
Cite
@article{arxiv.cond-mat/9607005,
title = {Quantum Spin Glasses},
author = {H. Rieger and A. P. Young},
journal= {arXiv preprint arXiv:cond-mat/9607005},
year = {2009}
}
Comments
10 pages LaTeX (Springer Lecture Notes style file included), 1 eps-figure; Review article for XIV Sitges Conference: Complex Behavior of Glassy Systems