Anomalous Dispersion of Longitudinal Optical Phonons in [Formula presented] Determined by Inelastic X-Ray Scattering

M. d'Astuto, P. K. Mang, P. Giura, A. Shukla, P. Ghigna, A. Mirone, M. Braden, M. Greven, M. Krisch, F. Sette

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The phonon dispersions of [Formula presented] along the [Formula presented] direction have been determined by inelastic x-ray scattering. Compared to the undoped parent compound, the two highest longitudinal phonon branches, associated with the Cu-O bond stretching and out-of-plane oxygen vibration, are shifted to lower energies. Moreover, an anomalous softening of the bond-stretching band is observed at about [Formula presented]. These signatures provide evidence for strong electron-phonon coupling in this electron-doped high-temperature superconductor.

Original languageEnglish (US)
Pages (from-to)4
Number of pages1
JournalPhysical review letters
Volume88
Issue number16
DOIs
StatePublished - 2002

Fingerprint Dive into the research topics of 'Anomalous Dispersion of Longitudinal Optical Phonons in [Formula presented] Determined by Inelastic X-Ray Scattering'. Together they form a unique fingerprint.

Cite this