Superconductivity-induced anomalies in the spin excitation spectra of underdoped YBa2Cu3O6+x

H. F. Fong, B. Keimer, D. L. Milius, Ilhan A. Aksay

Research output: Contribution to journalArticle

159 Scopus citations

Abstract

Polarized and unpolarized neutron scattering have been used to determine the effect of superconductivity on the magnetic excitation spectra of YBa2Cu3O6.5 (Tc = 52K) and YBa2Cu3O6.7 (Tc = 67K). Pronounced enhancements of the spectral weight centered around 25 and 33 meV, respectively, are observed below Tc in both crystals, compensated predominantly by a loss of spectral weight at higher energies. The data provide important clues to the origin of the 40 meV magnetic resonance peak in YBa2Cu3O7.

Original languageEnglish (US)
Pages (from-to)713-716
Number of pages4
JournalPhysical review letters
Volume78
Issue number4
DOIs
StatePublished - Jan 27 1997

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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