Spin Waves in Ferromagnetic Phase of MnP

1st Conference on Light and Particle Beams in Materials Science 2013

物理学;材料科学

Itoh, S.^1,2 ; Yano, S.^3,5 ; Yokoo, T.^1,2 ; Satoh, S.^1 ; Kawana, D.^2,6 ; Kousaka, Y.^3 ; Akimitsu, J.^3 ; Endoh, Y.^1,4

Neutron Science Division, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan^1

Condensed Matter Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan^2

Department of Physics and Mathematics, Aoyama Gakuin University, Sagamihara 229-8558, Japan^3

Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan^4

Department of Physics, University of Virginia, Charlottesville VA 22904-4714, United States^5

Institute for Solid State Physics, University of Tokyo, Tokyo 319-1160, Japan^6

关键词: Brillouin zones;    Dispersion relations;    Ferromagnetic phase;    Inelastic neutrons;    Isotropic Heisenberg;    Single ion anisotropy;    Sub-lattices;    Triple axis spectrometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/502/1/012044/pdf
DOI  :  10.1088/1742-6596/502/1/012044

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Inelastic neutron scattering experiments on an intermetallic compound, MnP, were performed by using a chopper spectrometer as well as triple axis spectrometers. Spin waves were observed in the ferromagnetic phase in the entire Brillouin zone along the a*- and b*-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.