Field induced tricritical behavior in the S=1/2 quasi one-dimensional frustrated Ising antiferromagnet

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dc.creatorMeloche, E.
dc.creatorPlumer, M. L.
dc.date2007-05-14
dc.date.accessioned2026-07-07T08:01:25Z
dc.date.available2026-07-07T08:01:25Z
dc.descriptionThe results of extensive histogram cluster heat-bath Monte Carlo simulations on the critical behavior of the quasi-one dimensional Ising antiferromagnet on a stacked triangular lattice are presented. A small applied field is shown to induce a crossover from XY universality to mean-field tricritical behavior. Experimental estimates of critical exponents suggest that these two types of phase transitions are observed in S=1 CsNiCl$_3$ and $S=1/2$ CsCoBr$_3$, respectively. The present results demonstrate that this difference can be explained by an unusual staggered magnetic field arising from quantum exchange mixing previously proposed to account for spin excitations in $S=1/2$ quasi-one-dimensional Ising antiferromagnets.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0705.1935
dc.identifierhttp://arxiv.org/abs/0705.1935
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128904
dc.subjectStrongly Correlated Electrons
dc.titleField induced tricritical behavior in the S=1/2 quasi one-dimensional frustrated Ising antiferromagnet
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