Neutron brillouin scattering with pulsed spallation neutron source - Spin-wave excitations from ferromagnetic powder samples - Spin-wave e

Shinichi Itoh, Yasuo Endoh, Tetsuya Yokoo, Daichi Kawana, Yoshio Kaneko, Yoshinori Tokura, Masaki Fujita

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The neutron Brillouin scattering (NBS) method, which was developed using advanced neutron sources, was extended to an intense pulsed spallation neutron source. The feasibility of this method was demonstrated by observing ferromagnetic spin waves in La0.8Sr0.2MnO3 and SrRuO3 powders. Gapless spin-wave excitations were observed in La0.8Sr0.2MnO3, which were continuously extrapolated to the lower scattering vector Q from previous results using single crystals. The novel result is a well-defined quadratic Q dependence in the spin-wave dispersion curve with a large energy gap in SrRuO3.

Original languageEnglish
Article number043001
Journaljournal of the physical society of japan
Volume82
Issue number4
DOIs
Publication statusPublished - 2013 Apr 1

Keywords

  • Ferromagnet
  • Inelastic neutron scattering
  • Neutron Brillouin scattering
  • Pulsed neutron
  • Spin waves

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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