Two-dimensional randomly-frustrated spin 1/2 Heisenberg model
Strongly Correlated Electrons
2009-02-12 v1 Disordered Systems and Neural Networks
Abstract
We investigate the properties of S=1/2 Heisenberg clusters with random frustration using exact diagonalizations. This is a model for a quantum spin glass. We show that the average ground state spin is , where N is the number of sites. We also calculate the magnetic susceptibility and the spin stiffness and low-energy excitations, and discuss these in terms of a semiclassical picture.
Cite
@article{arxiv.cond-mat/0105337,
title = {Two-dimensional randomly-frustrated spin 1/2 Heisenberg model},
author = {J. Oitmaa and O. P. Sushkov},
journal= {arXiv preprint arXiv:cond-mat/0105337},
year = {2009}
}
Comments
4 pages, 3 figures, 2 tables