High-Frequency Spin Waves in YBa₂Cu₃O_6.15>/sub>

Author

Stephen M. Hayden
Gabriel Aeppli
Toby G. Perring
Herbert A. Mook
Fatih Dogan, Missouri University of Science and TechnologyFollow

Abstract

Pulsed neutron spectroscopy is used to absolute measurements of the dynamic magnetic susceptibility of insulating YBa₂Cu₃O_6.15. Acoustic and optical modes, derived from inand out-of-phase oscillation of spins in adjacent CuO₂ planes, dominate the spectra and are observed up to 250 meV. The optical modes appear first at 74±5 meV. Linear-spin-wave theory gives an excellent description of the data and yields intralayer and interlayer exchange constants of J_∥=125±5 meV and J_⊥=11±2 meV, respectively, and a spin-wave intensity renormalization Z_Χ=0.4±0.1.

Recommended Citation

S. M. Hayden et al., "High-Frequency Spin Waves in YBa₂Cu₃O_{6.15>/sub>," Physical Review B (Condensed Matter), vol. 54, no. 10, pp. R6905 - R6908, American Physical Society (APS), Jan 1996.}

The definitive version is available at https://doi.org/10.1103/PhysRevB.54.R6905

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

0163-1829

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1996 American Physical Society (APS), All rights reserved.

Publication Date

01 Jan 1996