Quantum phase transitions in a spin-1/2 alternating Heisenberg antiferromagnetic chain under a staggered transverse magnetic field
Strongly Correlated Electrons
2009-04-07 v3
Abstract
The magnetic behaviors of a spin-1/2 alternating Heisenberg antiferromagnetic chain in a staggered transverse magnetic field is studied by means of the density-matrix renormalization group method and Jordan-Wigner transformation. Quantum phase transitions of different types are observed in the S=1 Neel and XY-like gapless phases, which result from the competitions between the staggered transverse field and magnetic orders induced by anisotropy and alternating interactions. The results are compared with the mean-field and some exactly resolved results.
Keywords
Cite
@article{arxiv.0812.4634,
title = {Quantum phase transitions in a spin-1/2 alternating Heisenberg antiferromagnetic chain under a staggered transverse magnetic field},
author = {Guang-Qiang Zhong and Shou-Shu Gong and Qing-Rong Zheng and Gang Su},
journal= {arXiv preprint arXiv:0812.4634},
year = {2009}
}
Comments
5 pages, 4 figures, published in Phys. Lett. A, 373,1687