Possibility of a Two-Component Tomonaga-Luttinger Liquid in Frustrated Integer-Spin Tubes
Strongly Correlated Electrons
2009-11-11 v2 Statistical Mechanics
Abstract
Uniform-field effects for frustrated odd-leg integer-spin tubes (cylinder type spin systems) are investigated in the weak interchain-coupling regime. We predict that, as the field exceeds the spin gap, a two-component Tomonaga-Luttinger liquid (TLL) appears due to the condensation of the doubly degenerate lowest magnons. Furthermore, it is argued that when the uniform field is so strong that the second lowest magnons are also condensed, the two-component TLL is destroyed and a new one-component TLL emerges. This quantum phase transition may be detected as a magnetization cusp.
Keywords
Cite
@article{arxiv.cond-mat/0511024,
title = {Possibility of a Two-Component Tomonaga-Luttinger Liquid in Frustrated Integer-Spin Tubes},
author = {Masahiro Sato},
journal= {arXiv preprint arXiv:cond-mat/0511024},
year = {2009}
}
Comments
2 pages, 1 figure, final version (proceedings of LT24), see also cond-mat/0410419 and cond-mat/0506049 (PRB72, 104438 (2005))