Magnetic excitations in ferromagnetic phase of MnP

Shin Ichiro Yano, Shinichi Itoh, Tetsuya Yokoo, Setsuo Satoh, Daichi Kawana, Yusuke Kousaka, Jun Akimitsu, Yasuo Endoh

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Inelastic neutron scattering experiments were performed on an intermetallic compound, MnP. We used a newly developed High Resolution Chopper Spectrometer, HRC, for energy transfers E≤75meV, besides various triple axis spectrometers; LTAS for energy transfers E≤2meV, TOPAN for E≤7.5meV and TAS-1 for E≤35meV. Spin wave excitations were observed in the ferromagnetic phase of MnP in the entire Brillouin zone along the a*- and b*-axes. The zone boundary energies of spin waves were determined to be around 60 meV along the a*-axis and around 75 meV along the b*-axis, and the dispersion relations showed two branches for both axes. The observed dispersion relations of spin waves were well described by an isotropic Heisenberg interaction adding a single ion anisotropy with two sub-lattices.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume347
DOIs
Publication statusPublished - Oct 4 2013
Externally publishedYes

Keywords

  • Ferromagnet
  • Inelastic neutron scattering
  • Intermetallic compound
  • MnP
  • Phase transition
  • Spin waves

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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