Intraplanar Magnetic Excitations in Na0.5CoO2: An Inelastic Neutron Study

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dc.creatorWooldridge, J.
dc.creatorBalakrishnan, G.
dc.creatorPaul, D. McK.
dc.creatorFrost, C.
dc.creatorBourges, P.
dc.creatorLees, M. R.
dc.date2006-08-08
dc.date2006-08-11
dc.date.accessioned2026-07-07T07:19:36Z
dc.date.available2026-07-07T07:19:36Z
dc.descriptionInelastic neutron scattering measurements mapping the in-plane magnetic interactions of Na0.5CoO2 reveal dispersive excitations at points above an energy gap Eg = 11.5(5) meV at the superstructural Bragg reflections. The excitations are highly damped, broadening with increasing energy, and disappear at hw ~ 35 meV, a strong indication that the magnetism is itinerant. Tilting into the ac plane reduces the value of Eg by 25%, suggesting that the dispersion along c is significant and the magnetic correlations are three-dimensional, as seen at the higher doping levels.
dc.description4 pages, 5 figures, reference added
dc.identifierhttps://arxiv.org/abs/cond-mat/0608196
dc.identifierhttp://arxiv.org/abs/cond-mat/0608196
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/114683
dc.subjectStrongly Correlated Electrons
dc.titleIntraplanar Magnetic Excitations in Na0.5CoO2: An Inelastic Neutron Study
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