Quantum Phases of the Shastry-Sutherland Antiferromagnet

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dc.creatorChung, C. H.
dc.creatorMarston, J. B.
dc.creatorSachdev, Subir
dc.date2001-02-13
dc.date2001-03-10
dc.date.accessioned2026-07-07T02:40:22Z
dc.date.available2026-07-07T02:40:22Z
dc.descriptionWe study possible paramagnetic phases of antiferromagnets on the Shastry-Sutherland lattice by a gauge-theoretic analysis of fluctuations in a theory with Sp(2N) symmetry. In addition to the familiar dimer phase, we find a confining phase with plaquette order, and a topologically ordered phase with deconfined S=1/2 spinons and helical spin correlations. The deconfined phase is contiguous to the dimer phase, and in a regime of couplings close to those found in the insulator SrCu2(BO3)2. We suggest that a superconductor obtained by doping this insulator with mobile charge carriers will be an attractive candidate for observing the anomalous magnetic flux properties associated with topological order.
dc.description8 pages, 8 figures; (v2) added new appendix and references
dc.identifierhttps://arxiv.org/abs/cond-mat/0102222
dc.identifierhttp://arxiv.org/abs/cond-mat/0102222
dc.identifierPhysical Review B 64, 134407 (2001)
dc.identifierdoi:10.1103/PhysRevB.64.134407
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/17353
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleQuantum Phases of the Shastry-Sutherland Antiferromagnet
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