Neutron scattering measurements on YBa2Cu3O7−δ

Author

• Herbert A. Mook
• Pengcheng Dat
• Fatih Dogan, Missouri University of Science and TechnologyFollow
• K. Salama
• G. Aeppli

Abstract

Polarized and unpolarized neutrons were used to study excitations in YBa{sub 2}Cu{sub 3}O{sub 7-d}. The magnetic excitations are found to be centered at ({pi},{pi}) in the reciprocal lattice and are sharply peaked in energy at 41 MeV in the superconducting state and broad in energy in the normal state. The intensity is found to result from coupled bilayers in both the normal and superconducting state. A new set of incommensurate one-dimensional phonon excitations was discovered in scans that integrate over energy along planes in reciprocal space. These are found to be very sharply defined in momentum space and are thought to stem from 2k{sub F} effects for the Cu-O chains.

Recommended Citation

H. A. Mook et al., "Neutron scattering measurements on YBa2Cu3O7−δ," Oak Ridge National Lab, May 1996.

The definitive version is available at https://doi.org/10.2172/224866

Department(s)

Materials Science and Engineering

Sponsor(s)

USDOE, Washington, DC (United States)

Comments

DOE Contract Number: AC05-96OR22464; Report Number(s): CONF-960366--6; ON: TI96009637

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2026 Oak Ridge National Lab, All rights reserfed

Publication Date

1996-05-01