Low-temperature lattice anomaly in LaFeAsO0.93F0.07 probed by x-ray absorption spectroscopy: Evidence for strong electron-lattice interaction

Simple item page
dc.creatorZhang, C. J.
dc.creatorOyanagi, H.
dc.creatorSun, Z. H.
dc.creatorKamihara, Y.
dc.creatorHosono, H.
dc.date2008-11-20
dc.date2009-01-30
dc.date.accessioned2026-07-07T12:35:28Z
dc.date.available2026-07-07T12:35:28Z
dc.descriptionThe local lattice structure in newly discovered LaFeAsO1-xFx superconductors is studied by extended x-ray absorption fine structure measurements. An anomalous upturn of the mean-square relative displacement of the Fe-As bond is detected below ~70 K as electron carriers are introduced,reflecting the occurrence of Fe-As bond local lattice fluctuation. Similar to that in cuprates, this lattice fluctuation exhibits an abrupt depression at the onset superconducting transition temperature. The results indicate that strong electron-lattice interaction is involved in the superconducting transition in oxypcnictide superconductors, putting a strict limitation on possible theoretical models.
dc.description15 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0811.3268
dc.identifierhttp://arxiv.org/abs/0811.3268
dc.identifierPhys. Rev. B 78, 214513 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.214513
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217775
dc.subjectSuperconductivity
dc.titleLow-temperature lattice anomaly in LaFeAsO0.93F0.07 probed by x-ray absorption spectroscopy: Evidence for strong electron-lattice interaction
dc.typetext

Files

Collections

arXiv