Neutron scattering from a coordination polymer quantum paramagnet

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dc.contributor.authorHong, T.
dc.contributor.authorKenzelmann, M.
dc.contributor.authorTurnbull, M. M.
dc.contributor.authorLandee, C. P.
dc.contributor.authorLewis, B.D.
dc.contributor.authorSchmidt, K. P.
dc.contributor.authorUhrig, G. S.
dc.contributor.authorBroholm, C.
dc.contributor.authorReich, D.
dc.date.accessioned2010-01-06T15:52:35Z
dc.date.available2010-01-06T15:52:35Z
dc.date.issued2006-09-01
dc.description.abstractInelastic neutron scattering measurements are reported for a powder sample of the spin-1/2 quantum paramagnet Cu(quinoxaline)Br2. Magnetic neutron scattering is identified above an energy gap of 1.9 meV. Analysis of the sharp spectral maximum at the onset indicates that the material is magnetically quasi-one-dimensional. Consideration of the wave vector dependence of the scattering and polymeric structure further identifies the material as a two-legged spin-1/2 ladder. Detailed comparisons of the data to various models of magnetism in this material based on the single-mode approximation and the continuous unitary transformation are presented. The latter theory provides an excellent account of the data with leg exchange J∥=2.0 meV and rung exchange J⊥=3.3 meV.en_US
dc.identifier.citationPhysical Review B (Condensed Matter and Materials Physics) 1 Sept. 2006, vol.74, no.9, pp. 94434-1-9en_US
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/33749
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.subjectCu(Quinoxaline)Br2en_US
dc.subjectcoordination polymer quantum paramagneten_US
dc.subjectwave vectoren_US
dc.subjectquasione-dimensional magnetic materialen_US
dc.subjectspin dynamicsen_US
dc.subjectpolymersen_US
dc.subjecttwo-legged spin-1/2 ladderen_US
dc.subjectparamagnetic materialsen_US
dc.subjectneutron diffractionen_US
dc.subjectexchange interactions (electron)en_US
dc.subjectenergy gapen_US
dc.subjectsingle mode approximationen_US
dc.subjectleg exchangeen_US
dc.subjectrung exchangeen_US
dc.titleNeutron scattering from a coordination polymer quantum paramagneten_US
dc.typeArticleen_US
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