Entropy Driven Dimerization in a One-Dimensional Spin-Orbital Model

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dc.creatorSirker, J.
dc.creatorKhaliullin, G.
dc.date2002-12-16
dc.date.accessioned2026-07-07T02:48:45Z
dc.date.available2026-07-07T02:48:45Z
dc.descriptionWe study a new version of the one-dimensional spin-orbital model with spins S=1 relevant to cubic vanadates. At small Hund's coupling J_H we discover dimerization in a pure electronic system solely due to a dynamical spin-orbital coupling. Above a critical value J_H, a uniform ferromagnetic state is stabilized at zero temperature. More surprisingly, we observe a temperature driven dimerization of the ferrochain, which occurs due to a large entropy released by dimer states. This dynamical dimerization seems to be the mechanism driving the peculiar intermediate phase of YVO_3.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0212368
dc.identifierhttp://arxiv.org/abs/cond-mat/0212368
dc.identifierPhys. Rev. B 67, 100408 (2003)
dc.identifierdoi:10.1103/PhysRevB.67.100408
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/20530
dc.subjectStrongly Correlated Electrons
dc.titleEntropy Driven Dimerization in a One-Dimensional Spin-Orbital Model
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