Antiferromagnetic integer-spin chains in a staggered magnetic field: approaching the thermodynamic limit through the infinite-size DMRG
Strongly Correlated Electrons
2007-08-07 v1
Abstract
We investigate the behavior of antiferromagnetic integer-spin chains in a staggered magnetic field, by means of the density-matrix renormalization group, carefully addressing the role of finite-size effects within the Haldane phase at small fields. In the case of spin S=2, we determine the dependence of the groundstate energy and magnetization on the external field, in the thermodynamic limit, and show how the peculiar finite-size behavior can be connected with the crossover in the groundstate from a spin liquid to a polarized N\'eel state.
Keywords
Cite
@article{arxiv.cond-mat/0107282,
title = {Antiferromagnetic integer-spin chains in a staggered magnetic field: approaching the thermodynamic limit through the infinite-size DMRG},
author = {M. Capone and S. Caprara},
journal= {arXiv preprint arXiv:cond-mat/0107282},
year = {2007}
}
Comments
7 pages, 5 figures