Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session H23: Excitations in Magnetic Oxides (Bulk)
2:30 PM–5:30 PM,
Tuesday, March 6, 2018
LACC
Room: 402B
Sponsoring
Units:
GMAG DMP DCOMP
Chair: Huibo Cao, Oak Ridge National Lab
Abstract ID: BAPS.2018.MAR.H23.10
Abstract: H23.00010 : Surface acoustic wave on a multiferroic material CuB2O4 and magnon-phonon coupling.*
4:18 PM–4:30 PM
Abstract 
Presenter:
Ryo Sasaki
(Basic Science, Univ of Tokyo)
Authors:
Ryo Sasaki
(Basic Science, Univ of Tokyo)
Yoichi Nii
(Basic Science, Univ of Tokyo)
Yoshinori Onose
(Basic Science, Univ of Tokyo)
Surface acoustic wave (SAW) is phonon traveling along the surface of a material. SAW can be generated by applying ac electric field to piezoelectric substrate, such as quartz or LiNbO3.
In this research, we fabricated SAW device composed of noncentrosymmetric magnet CuB2O4 substrate. CuB2O4 has piezoelectricity at room temperature and shows canted antiferromagnetic order at low temperature. In this device, we could excite SAW and observe its intensity change in magnetic field, which is consistent with the magnetic field dependence of magnetic resonance of CuB2O4. This means SAW oscillation generates magnetic resonance in CuB2O4.
This research is expected be applied in spintronics devices and may propose a new method to study phonon propagation in multiferroic materials.
*This work was supported in part by the Grants-in-Aid for Scientific Research (Grants No. 17H05176, No. 16H04008, and No. 15K21622) from the Japan Society for the Promotion of Science, the Inamori Foundation, and the Murata Science Foundation.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.H23.10
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