Magnetic excitations in MnP

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

Research output: Contribution to journalArticle

1 Citation (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 - 2012
Externally publishedYes

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excitation
neutron spectrometers
electric choppers
screws
Brillouin zones
inelastic scattering
neutron scattering
interactions
spectrometers
causes
high resolution
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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

Magnetic excitations in MnP. / Yano, Shinichiro; Akimitsu, Jun; Itoh, Shinich; Yokoo, Tetsuya; Satoh, Setsuo; Kawana, Daichi; Yasuo, Endoh.

In: Journal of Physics: Conference Series, Vol. 391, No. 1, 012113, 2012.

Research output: Contribution to journalArticle

Yano, S, Akimitsu, J, Itoh, S, Yokoo, T, Satoh, S, Kawana, D & Yasuo, E 2012, 'Magnetic excitations in MnP', Journal of Physics: Conference Series, vol. 391, no. 1, 012113. https://doi.org/10.1088/1742-6596/391/1/012113
Yano, Shinichiro ; Akimitsu, Jun ; Itoh, Shinich ; Yokoo, Tetsuya ; Satoh, Setsuo ; Kawana, Daichi ; Yasuo, Endoh. / Magnetic excitations in MnP. In: Journal of Physics: Conference Series. 2012 ; Vol. 391, No. 1.
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