Magnetic excitations in MnP

Shinichiro Yano, Jun Akimitsu, Shinich Itoh, Tetsuya Yokoo, Setsuo Satoh, Daichi Kawana, Endoh Yasuo

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

We performed inelastic neutron scattering experiments on a three-dimensional magnetic system MnP, which is a ferromagnetic inter-metallic compound below TC 291 K and transitions into a screw state at T * 47 K. Using newly developed high resolution chopper spectrometer (HRC) and triple axis spectrometer LTAS (for E 0-2 meV), 6G (for E 2-8 meV) TAS1 (for E 10-35 meV), we succeeded in observing the excitations from low energy to Brillouin zone center. We assumed isotropic 6 exchange parameters, and calculated dispersion relation using Heisenberg model for 2-sub lattices. We confirm that nearest neighbor (n.n) exchange parameters Jm are J > 0 (ferromagnetic interaction), the next nearest neighbor (n.n.n) exchange parameters are J < 0 (anti-ferromagnetic interaction), We conclude that the competition between n.n and n.n.n would be the cause of helimagnetic structure in MnP.

Original languageEnglish
Article number012113
JournalJournal of Physics: Conference Series
Volume391
Issue number1
DOIs
Publication statusPublished - Jan 1 2012
Externally publishedYes
EventInternational Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, United Kingdom
Duration: Aug 29 2011Sep 3 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Yano, S., Akimitsu, J., Itoh, S., Yokoo, T., Satoh, S., Kawana, D., & Yasuo, E. (2012). Magnetic excitations in MnP. Journal of Physics: Conference Series, 391(1), [012113]. https://doi.org/10.1088/1742-6596/391/1/012113