Published July 10, 1995
| Version v1
Journal article
Phonon and magnetic neutron scattering at 41 meV in YBa2Cu3O7
- 1. Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States)
- 2. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
- 3. Department of Chemical Engineering, Princeton University, Princeton, New Jersey 08544 (United States)
Description
We report inelastic neutron scattering measurements at excitation energies ℎω∼41 meV in YBa2Cu3O7. We separate magnetic and phonon contributions to the scattering cross section by a detailed analysis of the momentum dependence of the scattered intensity. The previously reported broad peak around q=(π/a,π/a) in the normal state can be entirely accounted for by a phonon which primarily involves vibrations of the in-plane oxygen. Magnetic scattering centered around 41 meV and q=(π/a,π/a) appears in the superconducting state only. Theoretical implications of these findings are discussed
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 75
- Journal Issue
- 2
- Journal Page Range
- p. 316-319.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 26069387
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; DATA ANALYSIS; HIGH-TC SUPERCONDUCTORS; INELASTIC SCATTERING; MAGNETISM; NEUTRON DIFFRACTION; PHONONS; TEMPERATURE DEPENDENCE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; OXIDES; OXYGEN COMPOUNDS; QUASI PARTICLES; SCATTERING; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS