Classical and quantum anisotropic Heisenberg antiferromagnets
Statistical Mechanics
2011-01-12 v1
Abstract
We study classical and quantum Heisenberg antiferromagnets with exchange anisotropy of XXZ-type and crystal field single-ion terms of quadratic and cubic form in a field. The magnets display a variety of phases, including the spin-flop (or, in the quantum case, spin-liquid) and biconical (corresponding, in the quantum lattice gas description, to supersolid) phases. Applying ground-state considerations, Monte Carlo and density matrix renormalization group methods, the impact of quantum effects and lattice dimension is analysed. Interesting critical and multicritical behaviour may occur at quantum and thermal phase transitions.
Keywords
Cite
@article{arxiv.0907.1076,
title = {Classical and quantum anisotropic Heisenberg antiferromagnets},
author = {W. Selke and G. Bannasch and M. Holtschneider and I. P. McCulloch and D. Peters and S. Wessel},
journal= {arXiv preprint arXiv:0907.1076},
year = {2011}
}
Comments
13 pages, 14 figures, conference