Theory of Layered Iron Oxide on Frustrated Geometry: Electric Polarization, Magnetoelectric Effect and Orbital State

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dc.creatorNagano, A.
dc.creatorNaka, M.
dc.creatorNasu, J.
dc.creatorIshihara, S.
dc.date2007-02-05
dc.date2007-06-11
dc.date.accessioned2026-07-07T08:04:43Z
dc.date.available2026-07-07T08:04:43Z
dc.descriptionA layered iron oxide \rfeo ($R$: rare-earth elements) is an exotic dielectric material with charge-order (CO) driven electric polarization and magnetoelectric effect caused by spin-charge coupling. In this paper, a theory of electronic structure and dielectric property in \rfeo is presented. Charge frustration in paired-triangular lattices allows a charge imbalance without inversion symmetry. Spin frustration induces reinforcement of this polar CO by a magnetic ordering. We also analyze an orbital model for the Fe ion which does not show a conventional long-range order.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0702087
dc.identifierhttp://arxiv.org/abs/cond-mat/0702087
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/130067
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleTheory of Layered Iron Oxide on Frustrated Geometry: Electric Polarization, Magnetoelectric Effect and Orbital State
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