Resonant neutron scattering from YBa2Cu3O7

B. Keimer, Hung Fai Fong, D. Reznik, F. Dogan, Ilhan A. Aksay

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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. (~0.8Tc). 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.

Original languageEnglish (US)
Pages (from-to)1927-1929
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume56
Issue number12
DOIs
StatePublished - Dec 1995

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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