Publication Type
Journal
Journal Name
Journal of Physics: Condensed Matter
Publication Date
Page Number
195804
Volume
37
Abstract
We performed inelastic neutron scattering experiments on single crystal samples of a linear magnetoelectric material Mn3Ta2O8 , which exhibits a collinear antiferromagnetic order, to reveal the spin dynamics. Numerous modes observed in the neutron spectra were reasonably reproduced by linear spin-wave theory on the basis of the spin Hamiltonian including eight Heisenberg interactions and an easy-plane type single-ion anisotropy. The presence of strong frustration was found in the identified spin Hamiltonian.
