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.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
