Low energy excitations in CoO studied by temperature dependent x-ray absorption spectroscopy

Simple item page
dc.creatorHaverkort, M. W.
dc.creatorTanaka, A.
dc.creatorHu, Z.
dc.creatorHsieh, H. H.
dc.creatorLin, H. -J.
dc.creatorChen, C. T.
dc.creatorTjeng, L. H.
dc.date2008-06-23
dc.date.accessioned2026-07-07T09:46:12Z
dc.date.available2026-07-07T09:46:12Z
dc.descriptionWe have measured the intricate temperature dependence of the Co L2,3 x-ray absorption spectra (2p-3d excitations) of CoO. To allow for accurate total electron yield measurements, the material has been grown in thin film form on a metallic substrate in order to avoid charging problems usually encountered during electron spectroscopic studies on bulk CoO samples. The changes in spectra due to temperature are in good agreement with detailed ligand-field calculations indicating that these changes are mostly due to thermal population of closely lying excited states, originating from degenerate t2g levels lifted by the spin-orbit coupling. Magnetic coupling in the ordered phase, modeled as a mean-field exchange field, mixes in excited states inducing a tetragonal charge density. The spin-orbit coupling induced splitting of the low energy states results in a non-trivial temperature dependence for the magnetic susceptibility.
dc.identifierhttps://arxiv.org/abs/0806.3736
dc.identifierhttp://arxiv.org/abs/0806.3736
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/163447
dc.subjectStrongly Correlated Electrons
dc.titleLow energy excitations in CoO studied by temperature dependent x-ray absorption spectroscopy
dc.typetext

Files

Collections

arXiv