The Magnetic Excitation Spectrum and Thermodynamics of High-Tc Superconductors

Author

• Pengcheng Dai
• Herbert A. Mook
• Stephen M. Hayden
• Toby G. Perring
• Gabriel Aeppli
• Rodney Dale Hunt
• Fatih Dogan, Missouri University of Science and TechnologyFollow

Abstract

Inelastic neutron scattering was used to study the wave vector– and frequency dependent magnetic fluctuations in single crystals of superconducting YBa₂Cu₃O_6+x. The spectra contain several important features, including a gap in the superconducting state, a pseudo gap in the normal state, and the much-discussed resonance peak. The appearance of the pseudo gap determined from transport and nuclear resonance coincides with formation of the resonance in the magnetic excitations. The exchange energy associated with the resonance has the temperature and doping dependences as well as the magnitude to describe approximately the electronic specific heat near the superconducting transition temperature (T_c).

Recommended Citation

P. Dai et al., "The Magnetic Excitation Spectrum and Thermodynamics of High-Tc Superconductors," Science, vol. 284, no. 5418, pp. 1344 - 1347, American Association for the Advancement of Science, May 1999.

The definitive version is available at https://doi.org/10.1126/science.284.5418.1344

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

0036-8075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2026 American Association for the Advancement of Science, All rights reserved

Publication Date

1999-05-21