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 language | English (US) |
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Pages (from-to) | 1733-1734 |
Number of pages | 2 |
Journal | Physica C: Superconductivity and its applications |
Volume | 235-240 |
Issue number | PART 3 |
DOIs | |
State | Published - 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