Phase diagrams of spin ladders with ferromagnetic legs
Strongly Correlated Electrons
2009-11-07 v1
Abstract
The low-temperature properties of the spin S=1/2 ladder with anisotropic ferromagnetic legs are studied using the continuum limit bosonization approach. The weak-coupling ground state phase diagram of the model is obtained for a wide range of coupling constants and several unconventional gapless ''spin-liquid'' phases are shown to exist for ferromagnetic coupling. The behavior of the ladder system in the vicinity of the ferromagnetic instability point is discussed in detail.
Cite
@article{arxiv.cond-mat/0209677,
title = {Phase diagrams of spin ladders with ferromagnetic legs},
author = {T. Vekua and G. I. Japaridze and H. -J. Mikeska},
journal= {arXiv preprint arXiv:cond-mat/0209677},
year = {2009}
}
Comments
11 pages, 4 figures