Spectrum and Thermodynamics of High-T

Abstract

Inelastic neutron scattering was used to study the wave vector–and frequencydependent magnetic fluctuations in single crystals of superconducting YBa2Cu3O6x. The spectra contain several important features, including a gap in the superconducting state, a pseudogap in the normal state, and the muchdiscussed resonance peak. The appearance of the pseudogap 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 (Tc).

Department(s)

Materials Science and Engineering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Publication Date

1995-01-01

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