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arXiv · 2209.13954

Scanning X-ray diffraction microscopy of a 6 GHz surface acoustic wave

M. Hanke·N. Ashurbekov·E. Zatterin·M. E. Msall·J. Hellemann·P. V. Santos·T. U. Schulli·S. Ludwig
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Abstract

Surface acoustic waves at frequencies beyond a few GHz are promising components for quantum technology applications. Applying scanning X-ray diffraction microcopy we directly map the locally resolved components of the three-dimensional strain field generated by a standing surface acoustic wave on GaAs with wavelength $\lambda\simeq500\,$nm corresponding to frequencies near 6 GHz. We find that the lattice distortions perpendicular to the surface are phase-shifted compared to those in propagation direction. Model calculations based on Rayleigh waves confirm our measurements. Our results represent a break through in providing a full characterization of a radio frequency surface acoustic wave beyond plain imaging.

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M. Hanke, N. Ashurbekov, E. Zatterin, M. E. Msall, J. Hellemann, P. V. Santos, T. U. Schulli, S. Ludwig. 2022-09-28. Scanning X-ray diffraction microscopy of a 6 GHz surface acoustic wave. https://doi.org/10.1103/physrevapplied.19.024038

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