Composition dependence of the in-plane Cu-O bond-stretching LO phonon mode in YBa2Cu3O6+x

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dc.contributor.authorStercel, Fen_AU
dc.contributor.authorEgami, Ten_AU
dc.contributor.authorMook, HAen_AU
dc.contributor.authorYethiraj, Men_AU
dc.contributor.authorChung, JHen_AU
dc.contributor.authorArai, Men_AU
dc.contributor.authorFrost, CDen_AU
dc.contributor.authorDogan, Fen_AU
dc.date.accessioned2008-04-04en_AU
dc.date.accessioned2010-04-30T05:02:03Zen_AU
dc.date.available2008-04-04en_AU
dc.date.available2010-04-30T05:02:03Zen_AU
dc.date.issued2008-01en_AU
dc.date.statistics2008-01en_AU
dc.description.abstractAn inelastic pulsed neutron scattering study was performed on the dependence of the dispersion and spectral intensity of the in-plane Cu-O bond-stretching LO phonon mode on doped charge density. The measurements were made in the time-of-flight mode with the multiangle position sensitive spectrometer of the ISIS facility on single crystals of YBa2Cu3O6+x (x=0.15, 0.35, 0.6, 0.7, and 0.95). The focus of the study is the in-plane Cu-O bond-stretching LO phonon mode, which is known for strong electron-phonon coupling and unusual dependence on composition and temperature. It is shown that the dispersions for the samples with x=0.35, 0.6, and 0.7 are similar to the superposition of those for x=0.15 and 0.95 samples, and cannot be explained in terms of the structural anisotropy. It is suggested that the results are consistent with the model of nanoscale electronic phase separation, with the fraction of the phases being dependent on the doped charge density. © 2008, American Physical Societyen_AU
dc.identifier.articlenumber014502en_AU
dc.identifier.citationStercel, F., Egami, T., Mook, H. A., Yethiraj, M., Chung, J. H., Arai, M., Frost, C., & Dogan, F. (2008). Composition dependence of the in-plane Cu-O bond-stretching LO phonon mode in YBa2Cu3O6+x. Physical Review B, 77(1), 014502. doi:10.1103/PhysRevB.77.014502en_AU
dc.identifier.govdoc1124en_AU
dc.identifier.issn1098-0121en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.77.014502en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1028en_AU
dc.identifier.volume77en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectSuperconductorsen_AU
dc.subjectCopper oxidesen_AU
dc.subjectLattice parametersen_AU
dc.subjectExcitationen_AU
dc.subjectDensityen_AU
dc.subjectScatteringen_AU
dc.subjectNeutronsen_AU
dc.subjectPhononsen_AU
dc.titleComposition dependence of the in-plane Cu-O bond-stretching LO phonon mode in YBa2Cu3O6+xen_AU
dc.typeJournal Articleen_AU
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