Abstract
Interactions of surface acoustoelectric waves with a granular high-temperature superconducting medium are studied. Dispersion equations describing the characteristics of surface acoustoelectric waves are derived for piezoelectrics of 4 and 6mm and 3m symmetry. It is shown that at a temperature above the critical point an attenuation jump and a sudden change in the phase velocity of surface acoustoelectric waves are observed. This effect increases with increase in the electromechanical coupling coefficient and decrease in the thickness of the high-temperature superconducting film. The results obtained can be used in designing frequency selectors and transient photodetectors.
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Kovalenko, E.S., Krakovskii, V.A. Surface Acoustoelectric Waves in a Piezoelectric–High-Temperature Granular Superconductor Layered Structure. Russian Physics Journal 44, 497–506 (2001). https://doi.org/10.1023/A:1012385712663
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DOI: https://doi.org/10.1023/A:1012385712663