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Detection of surface acoustic waves by scanning tunneling microscopy

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Abstract

A new method for the investigation of ultrasonic waves on surfaces of solids based on scanning tunneling microscopy is presented. A sinusoidal high frequency signal is added to the tip voltage. Hence the tunneling current contains a component whose frequency is the difference of the frequencies of the acoustic wave field and the ac tip voltage. Amplitude and phase of this component carry the full information about the wave field.

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Rohrbeck, W., Chilla, E., Fröhlich, HJ. et al. Detection of surface acoustic waves by scanning tunneling microscopy. Appl. Phys. A 52, 344–347 (1991). https://doi.org/10.1007/BF00324777

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  • DOI: https://doi.org/10.1007/BF00324777

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