Frustrated three-leg spin tubes: from spin 1/2 with chirality to spin 3/2

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dc.creatorFouet, J. -B.
dc.creatorLaeuchli, A.
dc.creatorPilgram, S.
dc.creatorNoack, R. M.
dc.creatorMila, F.
dc.date2005-09-08
dc.date2005-11-17
dc.date.accessioned2026-07-07T06:41:44Z
dc.date.available2026-07-07T06:41:44Z
dc.descriptionMotivated by the recent discovery of the spin tube [(CuCl$_2$tachH)$_3$Cl]Cl$_2$, we investigate the properties of a frustrated three-leg spin tube with antiferromagnetic intra-ring and inter-ring couplings. We pay special attention to the evolution of the properties from weak to strong inter-ring coupling and show on the basis of extensive density matrix renormalization group and exact diagonalization calculations that the system undergoes a first-order phase transition between a dimerized gapped phase at weak coupling that can be described by the usual spin-chirality model and a gapless critical phase at strong coupling that can be described by an effective spin-3/2 model. We also show that there is a magnetization plateau at 1/3 in the gapped phase and slightly beyond. The implications for [(CuCl$_2$tachH)$_3$Cl]Cl$_2$ are discussed, with the conclusion that this system behaves essentially as a spin-3/2 chain.
dc.description8 pages, 9 figures, revised version
dc.identifierhttps://arxiv.org/abs/cond-mat/0509217
dc.identifierhttp://arxiv.org/abs/cond-mat/0509217
dc.identifierPhys. Rev. B 73,014409 (2006)
dc.identifierdoi:10.1103/PhysRevB.73.014409
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/101776
dc.subjectStrongly Correlated Electrons
dc.titleFrustrated three-leg spin tubes: from spin 1/2 with chirality to spin 3/2
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