Efficient spin-wave excitation by surface acoustic waves in ultra-low damping YIG/ZnO-heterostructures
Authors/Creators
- 1. RPTU Kaiserslautern-Landau
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2.
University of Oxford, Department of Physics
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3.
University of Kaiserslautern
Description
We demonstrate the efficient excitation of spin waves in the ultra-low magnetic damping material yttrium-iron-garnet (YIG) by surface acoustic waves (SAWs). To this end, we employ interdigital transducers fabricated on a piezoelectric zinc oxide (ZnO) thin film covering the YIG. This enables the excitation of coherent, propagating Rayleigh-type and Sezawa-type SAWs. We find that the ultralow magnetic damping of YIG is retained after the ZnO-deposition and we carry out a comprehensive investigation of the magnetoelastic interaction due to the different SAW modes as a function of the external magnetic field magnitude and orientation. By measuring the SAW attenuation our experiments reveal a highly anisotropic and non-reciprocal SAW-SW-interaction in agreement with our model caluclation, while demonstrating that low-damping magnons can be efficiently excited by SAWs.
Files
Fig_2a_S21_Data_Slice_Rayleigh_40deg.txt
Files
(388.2 MB)
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Additional details
Funding
Dates
- Submitted
-
2025-03-14Submitted to ArXiv, Phys. Rev. Appl, Zenodo