An overall energy spectrum of magnetic fluctuations in the superconducting lal.85 Sr0.15CuO4

Kazuyoshi Yamada, Yasuo Endoh, Chul Ho Lee, Shuichi Wakimoto, Masatoshi Arai, Katsunori Ubukata, Masaki Fujita, Syoichi Hosoya, Steve M. Bennington

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

High-energy pulsed neutron inelastic scattering experiments have been performed using single crystals of La1.85 Sr0.15 CuO 4 to study magnetic fluctuations in the superconducting phase. A peak centered at the reciprocal point (π, π ) is well defined below around 120 meV and rapidly damped beyond this energy. However, the "background- subtracted" scattering intensities indicate that magnetic signals remain up to around 300 meV. These data combined with the results obtained by triple-axis neutron scattering experiments provide the first overall energy spectrum of the dynamical susceptibility in La1.85 Sr0.15 CuO 4. The obtained spectrum is much wider than that of YBa 2Cu3O7-d(d∼0).

Original languageEnglish
Pages (from-to)2742-2745
Number of pages4
Journaljournal of the physical society of japan
Volume64
Issue number8
DOIs
Publication statusPublished - 1995 Aug

Keywords

  • High-T superconductor
  • LaSrCuO
  • Neutron scattering
  • Spin fluctuation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Yamada, K., Endoh, Y., Lee, C. H., Wakimoto, S., Arai, M., Ubukata, K., Fujita, M., Hosoya, S., & Bennington, S. M. (1995). An overall energy spectrum of magnetic fluctuations in the superconducting lal.85 Sr0.15CuO4. journal of the physical society of japan, 64(8), 2742-2745. https://doi.org/10.1143/JPSJ.64.2742