TY - JOUR
T1 - Magnetic excitations in ferromagnetic phase of MnP
AU - Yano, Shin Ichiro
AU - Itoh, Shinichi
AU - Yokoo, Tetsuya
AU - Satoh, Setsuo
AU - Kawana, Daichi
AU - Kousaka, Yusuke
AU - Akimitsu, Jun
AU - Endoh, Yasuo
N1 - Funding Information:
The authors wish to express their sincere thanks to Y. Todate for supplying the specialist knowledge required for this study. The work is inspired by his doctor thesis and his previous works. The authors also wish to acknowledge N. Metoki, K. Kakurai, S. Wakimoto and K. Iwasa for detailed directions on the neutron scattering experiments with the triple axis spectrometers LTAS, TAS-1, and TOPAN in JRR-3 M, and T. Hasegawa and M. Udagawa for the Raman scattering experiments at Hiroshima University. S. Yano. and J. Akimitsu at the Aoyama Gakuin University were partially supported by the Iwanami Fujukai Foundation, a Grant-in-Aid for Science Research and a High-Tech Research Center project for private universities with the matching fund subsidy from the Ministry of Education, Culture, Sports, Science and Technology, Japan. The experiments at J-PARC were approved by the Neutron Scattering Advisory Committee of the Institute of Materials Structure Science, of the High Energy Accelerator Research Organization.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
KW - Ferromagnet
KW - Inelastic neutron scattering
KW - Intermetallic compound
KW - MnP
KW - Phase transition
KW - Spin waves
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U2 - 10.1016/j.jmmm.2013.07.019
DO - 10.1016/j.jmmm.2013.07.019
M3 - Article
AN - SCOPUS:84884803257
SN - 0304-8853
VL - 347
SP - 33
EP - 38
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
ER -