Scalar spin chirality and quantum Hall effect on a triangular lattice

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dc.creatorMartin, Ivar
dc.creatorBatista, C. D.
dc.date2008-07-23
dc.date.accessioned2026-07-07T10:08:38Z
dc.date.available2026-07-07T10:08:38Z
dc.descriptionWe study the Kondo Lattice and Hubbard models on a triangular lattice for band filling factor 3/4. We show that a simple non-coplanar chiral spin ordering (scalar spin chirality) is naturally realized in both models due to perfect nesting of the Fermi surface. The resulting triple-Q magnetic ordering is a natural counterpart of the collinear Neel ordering of the half-filled square lattice Hubbard model. We show that the obtained chiral phase exhibits a spontaneous quantum Hall-effect with sigma_{xy}= e^2/h.
dc.description4 pages 3 figs
dc.identifierhttps://arxiv.org/abs/0807.3552
dc.identifierhttp://arxiv.org/abs/0807.3552
dc.identifierPhys. Rev. Lett. 101, 156402 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.156402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171065
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleScalar spin chirality and quantum Hall effect on a triangular lattice
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