Dynamic nonlinear (cubic) susceptibility in quantum Ising spin glass
Disordered Systems and Neural Networks
2009-11-07 v1 Statistical Mechanics
Abstract
Dynamic nonlinear (cubic) susceptibility in quantum d-dimensional Ising spin glass with short-range interactions is investigated on the basis of quantum droplet model and quantum-mechanical nonlinear response theory. Nonlinear response depends on the tunneling rate for a droplet which regulates the strength of quantum fluctuations. It shows a strong dependence on the distribution of droplet free energies and on the droplet length scale average. Comparison with recent experiments on quantum spin glasses like disordered dipolar quantum Ising magnet is discussed.
Keywords
Cite
@article{arxiv.cond-mat/0203501,
title = {Dynamic nonlinear (cubic) susceptibility in quantum Ising spin glass},
author = {G. Busiello and R. V. Saburova and V. G. Sushkova},
journal= {arXiv preprint arXiv:cond-mat/0203501},
year = {2009}
}
Comments
15 pages, 3 figures