Resonant Neutron Scattering from YBa₂Cu₃O₇

Author

Bernhard Keimer
Hungfai Fong
Dmitry V. Reznik
Fatih Dogan, Missouri University of Science and TechnologyFollow
Ilhan A. Aksay

Abstract

We have developed a new scattering geometry for magnetic neutron scattering experiments on YBa₂Cu₃O₇ in which the phonon background around q ~ ( π a, π a), ω ~ 40meV is significantly reduced. We use this new approach to study the previously detected sharp magnetic excitation at ~ 40meV in the superconducting state in detail. The excitation does not shift substantially in energy up to at least 75K. (~0.8T_c). Polarized neutron scattering experiments (horizontal minus vertical field) confirm the magnetic origin of the 40meV excitation and put stringent limits on the magnetic scattering intensity in the normal state.

Recommended Citation

B. Keimer et al., "Resonant Neutron Scattering from YBa₂Cu₃O₇," Journal of Physics and Chemistry of Solids, vol. 56, no. 12, pp. 1927 - 1929, Elsevier, Dec 1995.

The definitive version is available at https://doi.org/10.1016/0022-3697(95)00097-6

Department(s)

Materials Science and Engineering

Keywords and Phrases

Geometry; Magnetic properties; Magnetic resonance; Magnetrons; Neutron scattering; Phonons; Polarization; Thermal effects; Magnetic excitation; Magnetic scattering intensity; Oxide superconductors

International Standard Serial Number (ISSN)

0022-3697

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1995 Elsevier, All rights reserved.

Publication Date

01 Dec 1995