Frustration-induced eta inversion in the S=1/2 bond-alternating spin chain
Strongly Correlated Electrons
2009-11-10 v2 Statistical Mechanics
Abstract
We study the frustration-induced enhancement of the incommensurate correlation for a bond-alternating quantum spin chain in a magnetic field, which is associated with a quasi-one-dimensional organic compound F5PNN. We investigate the temperature dependence of the staggered susceptibilities by using the density matrix renormalization group, and then find that the incommensurate correlation becomes dominant in a certain range of the magnetic field. We also discuss the mechanism of this enhancement on the basis of the mapping to the effective S=1/2 XXZ chain and a possibility of the field-induced incommensurate long range order.
Keywords
Cite
@article{arxiv.cond-mat/0403349,
title = {Frustration-induced eta inversion in the S=1/2 bond-alternating spin chain},
author = {Nobuya Maeshima and Kouichi Okunishi and Kiyomi Okamoto and Tôru Sakai},
journal= {arXiv preprint arXiv:cond-mat/0403349},
year = {2009}
}
Comments
4 pages, 5 figures, replaced with revised version accepted to PRL