A different look at the spin state of Co$^{3+}$ ions in CoO$_{5}$ pyramidal coordination

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dc.creatorHu, Z.
dc.creatorWu, Hua
dc.creatorHaverkort, M. W.
dc.creatorHsieh, H. H.
dc.creatorLin, H. -J.
dc.creatorLorenz, T.
dc.creatorBaier, J.
dc.creatorReichl, A.
dc.creatorBonn, I.
dc.creatorFelser, C.
dc.creatorTanaka, A.
dc.creatorChen, C. T.
dc.creatorTjeng, L. H.
dc.date2003-10-07
dc.date.accessioned2026-07-07T02:54:00Z
dc.date.available2026-07-07T02:54:00Z
dc.descriptionUsing soft-x-ray absorption spectroscopy at the Co-$L_{2,3}$ and O-$K$ edges, we demonstrate that the Co$^{3+}$ ions with the CoO$_{5}$ pyramidal coordination in the layered Sr$_2$CoO$_3$Cl compound are unambiguously in the high spin state. Our result questions the reliability of the spin state assignments made so far for the recently synthesized layered cobalt perovskites, and calls for a re-examination of the modeling for the complex and fascinating properties of these new materials.
dc.description5 pages 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0310138
dc.identifierhttp://arxiv.org/abs/cond-mat/0310138
dc.identifierPhys. Rev. Lett. 92, 207402 (2004)
dc.identifierdoi:10.1103/PhysRevLett.92.207402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22381
dc.subjectStrongly Correlated Electrons
dc.titleA different look at the spin state of Co$^{3+}$ ions in CoO$_{5}$ pyramidal coordination
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