TY - JOUR
T1 - Direct Imaging of Resonant Phonon-Magnon Coupling
AU - Zhao, Chenbo
AU - Zhang, Zhizhi
AU - Li, Yi
AU - Zhang, Wei
AU - Pearson, John E.
AU - Divan, Ralu
AU - Liu, Qingfang
AU - Novosad, Valentine
AU - Wang, Jianbo
AU - Hoffmann, Axel
N1 - Funding Information:
This work was performed at the Argonne National Laboratory and supported by the Department of Energy, Office of Science, Materials Science and Engineering Division. Use of the Center for Nanoscale Materials, an Office of Science user facility, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. C.Z. acknowledges additional financial support from the China Scholarship Council (Grant No. 201806180105) for a research stay at Argonne. The authors thank Vasyl Tyberkevych and Guozhi Chai for useful discussions.
Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/1
Y1 - 2021/1
N2 - Detection of phonons is critical for research on the interconversion between resonantly coupled magnons and phonons. Here we report the direct visualization of the resonant coupling of magnons and phonons by microfocused Brillouin light scattering on the Ni/LiNbO3 hybrid heterostructure. The static patterns of surface acoustic wave phonons, originating from the interference between the incident wave ψ0(A0,k,φ0) and reflected wave ψ1(A1,-k,φ1), can be modulated by magnetic field due to the magnon-phonon coupling. By analyzing the information of phonons obtained from Brillouin spectroscopy, the properties of the magnon system (Ni film), e.g., ferromagnetic resonance field and resonance linewidth, can be determined. The results provide spatially resolved information about phonon manipulation and detection in a coupled magnon-phonon system.
AB - Detection of phonons is critical for research on the interconversion between resonantly coupled magnons and phonons. Here we report the direct visualization of the resonant coupling of magnons and phonons by microfocused Brillouin light scattering on the Ni/LiNbO3 hybrid heterostructure. The static patterns of surface acoustic wave phonons, originating from the interference between the incident wave ψ0(A0,k,φ0) and reflected wave ψ1(A1,-k,φ1), can be modulated by magnetic field due to the magnon-phonon coupling. By analyzing the information of phonons obtained from Brillouin spectroscopy, the properties of the magnon system (Ni film), e.g., ferromagnetic resonance field and resonance linewidth, can be determined. The results provide spatially resolved information about phonon manipulation and detection in a coupled magnon-phonon system.
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U2 - 10.1103/PhysRevApplied.15.014052
DO - 10.1103/PhysRevApplied.15.014052
M3 - Article
AN - SCOPUS:85100413076
SN - 2331-7019
VL - 15
JO - Physical Review Applied
JF - Physical Review Applied
IS - 1
M1 - 014052
ER -