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.
| Original language | English |
|---|---|
| Article number | 195804 |
| Journal | Journal of Physics Condensed Matter |
| Volume | 37 |
| Issue number | 19 |
| DOIs | |
| State | Published - May 12 2025 |
Funding
We are grateful to D. Kawana, T. Asami, and R. Sugiura for supporting us in the neutron scattering experiment at HRC and HER. The neutron experiment using HRC spectrometer at the Materials and Life Science Experimental Facility of the J-PARC was performed under a user program (Proposal No. 2021S01). A portion of this research used resources at the HFIR, a DOE Office of Science User Facility operated by the ORNL. Travel expenses for the neutron scattering experiments performed using CTAX at ORNL, USA was supported by the U.S.-Japan Cooperative Research Program on Neutron Scattering (Proposal No. 2021-4). The neutron experiment using HER at JRR-3 was carried out by the joint research in the Institute for Solid State Physics, the University of Tokyo (Proposal No. 21403). H. Kikuchi was supported by Support for Pioneering Research Initiated by Next Generation (SPRING) of Japan Science and Technology Agency (JST). S. Hasegawa was supported by the Japan Society for the Promotion of Science through the Leading Graduate Schools (MERIT) This project was supported by JSPS KAKENHI Grant Numbers 19KK0069 and 21H04441.
Keywords
- frustration
- inelastic neutron scattering
- linear magnetoelectric effect