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dc.contributor.authorMcQueeney, R.J.
dc.contributor.authorDiallo, S.O.
dc.contributor.authorAntropov, V.P.
dc.contributor.authorSamolyuk, G.D.
dc.contributor.authorBroholm, C.
dc.contributor.authorNi, N.
dc.contributor.authorNandi, S.
dc.contributor.authorYethiraj, M.
dc.contributor.authorZaretsky, J.L.
dc.contributor.authorPulikkotil, J.J.
dc.contributor.authorKreyssig, A.
dc.contributor.authorLumsden, M.D.
dc.contributor.authorHarmon, B.N.
dc.contributor.authorCanfield, P.C.
dc.date.accessioned2009-12-29T18:26:21Z
dc.date.available2009-12-29T18:26:21Z
dc.date.issued2008-11-28
dc.identifier.citationPhysical Review Letters 28 Nov. 2008, vol.101, no.22, 227205 (4 pp.)en_US
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/33735
dc.description.abstractInelastic neutron scattering measurements of the magnetic excitations in CaFe2As2 indicate that the spin wave velocity in the Fe layers is exceptionally large and similar in magnitude to the cuprates. However, the spin wave velocity perpendicular to the layers is at least half as large that in the layer, so that the magnetism is more appropriately categorized as anisotropic three-dimensional, in contrast to the two-dimensional cuprates. Exchange constants derived from band structure calculations predict spin wave velocities that are consistent with the experimental data.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.subjectneutron diffractionen_US
dc.subjectspin dynamicsen_US
dc.subjectspin wavesen_US
dc.subjectmagnetic superconductorsen_US
dc.subjectiron alloysen_US
dc.subjectexchange interactions (electron)en_US
dc.subjectcalcium alloysen_US
dc.subjectatomic force microscopyen_US
dc.subjectanisotropic three-dimensional magnetismen_US
dc.subjectmagnetic excitationsen_US
dc.subjectinelastic neutron scatteringen_US
dc.subjectspin wave velocityen_US
dc.subjectarsenic alloysen_US
dc.subjectantiferromagnetismen_US
dc.subjectab initio calculationsen_US
dc.subjecttwo-dimensional cupratesen_US
dc.subjectexchange constantsen_US
dc.subjectband structure calculationsen_US
dc.subjectCaFe2As2en_US
dc.titleAnisotropic three-dimensional magnetism in CaFe2As2en_US
dc.typeArticleen_US


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