High resolution inelastic neutron scattering study of phonon self-energy effects in YBCO

D. Reznik, B. Keimer, F. Dogan, Ilhan A. Aksay

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Abstract

We report preliminary results of the high resolution inelastic neutron scattering measurements of the 42.5 meV optical phonon branch in YBCO, whose behavior at momentum transfer q=0 has been extensively studied by Raman scattering. The experiment was done on a large (75g) single crystal of YBa2Cu3O7-x (Tc∼90K) with the resolution of 2 meV (full width at half maximum). In cooling from 100K to 50K we observe a small softening of the phonon energy at q= 0.25, 0.25, 0, but no significant linewidth change.

Original languageEnglish (US)
Pages (from-to)1733-1734
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume235-240
Issue numberPART 3
DOIs
StatePublished - Dec 1994

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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