Magnetic Excitations in Superconducting YBa2Cu306+x Crystals Studied by Neutron Inelasdc Scattering

Masatoshi Sato, Shinichi Shamoto, Takanori Kiyokura, Kazuhisa Kakurai, Gen Shirane, B. J. Sternlieb, J. M. Tranquada

Research output: Contribution to journalArticlepeer-review

Abstract

Magnetic excitation spectra in single crystals of YBa2Cu306+;c with superconducting transition temperature Tc - 66 K (a:-0.75) and 90 K (x-0.9) are reported. For excitation energies in the range 25-45 meV, a scan at fixed energy yields a single peak with a large q-width centered on the antiferromagnetic wave vector, (n,n), in agreement with the work of Rossat-Mignod and coworkers. However, in contrast to the results of the latter group, we have not observed, despite significant effort, any (N-dependent magnetic scattering in either crystal at energies below ∼ 20 meV, even at temperatures far above Tc.

Original languageEnglish
Pages (from-to)263-273
Number of pages11
JournalJournal of the Physical Society of Japan
Volume62
Issue number1
DOIs
Publication statusPublished - 1993

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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