Abstract
We report inelastic neutron scattering measurements at excitation energies ħw∼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.
Recommended Citation
H. F. Fong et al., "Phonon and Magnetic Neutron Scattering at 41 meV in YBa2Cu3O7," Physical Review Letters, vol. 75, no. 2, American Physical Society, Jul 1995.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.75.316
Department(s)
Materials Science and Engineering
International Standard Serial Number (ISSN)
1079-7114, 0031-9007
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2026 American Physical Society, All rights reserved
Publication Date
1995-07-10
