Oxygen Phonon Branches in Detwinned YBa2Cu3O7

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dc.creatorReznik, D.
dc.creatorPintschovius, L.
dc.creatorReichardt, W.
dc.creatorEndoh, Y.
dc.creatorHiraka, H.
dc.creatorTranquada, J. M.
dc.creatorTajima, S.
dc.creatorUchiyama, H.
dc.creatorMasui, T.
dc.date2002-09-09
dc.date2002-09-18
dc.date.accessioned2026-07-07T02:47:11Z
dc.date.available2026-07-07T02:47:11Z
dc.descriptionWe report results of inelastic neutron scattering measurements of phonon dispersions on a detwinned sample of YBaCu3O7 and compare them with model calculations. Plane oxygen bond stretching phonon branches disperse steeply downwards from the zone center in both the a and the b direction indicating a strong electron-phonon coupling. Half way to the zone boundary, the phonon peaks become ill-defined but we see no need to invoke unit cell doubling or charge stripe formation: lattice dynamical shell model calculations predict such behavior as a result of branch anticrossings. There were no observable superconductivity-related temperature effects on selected plane oxygen bond stretching modes measured on a twinned sample.
dc.description5 pages, 3 figures, To appear in Journal of Low Temperature Physics (Proceedings of MOS2002; Revised version (1) with many changes throughout the text
dc.identifierhttps://arxiv.org/abs/cond-mat/0209197
dc.identifierhttp://arxiv.org/abs/cond-mat/0209197
dc.identifierJ. Low Temp. Phys., 131, 417 (2003)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/19916
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleOxygen Phonon Branches in Detwinned YBa2Cu3O7
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