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

Publication Year
1994

Type

Journal Article
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 (T-c approximate to 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.
Journal
Physica C
Volume
235
Pages
1733-1734
Date Published
12/1994
Type of Article
Article
ISBN
0921-4534
Accession Number
WOS:A1994QC69500096