Ultrasonic attenuation by a thin film of high transition temperature Nb3Ge

The electron--phonon contribution to the ultrasonic attenuation coefficient of a 0.5 mu m Nb3Ge film has been measured using 1.2 GHz surface acoustic waves. Analysis of the attenuation data shows that the largest part of the film has a superconducting transition near the bulk transition temperature,...

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Bibliographic Details
Published in:Solid state communications 1980-02, Vol.33 (7), p.781-784
Main Authors: Salvo, H.L., Fredricksen, H.P., Levy, M., Gavaler, J.R.
Format: Article
Language:English
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Summary:The electron--phonon contribution to the ultrasonic attenuation coefficient of a 0.5 mu m Nb3Ge film has been measured using 1.2 GHz surface acoustic waves. Analysis of the attenuation data shows that the largest part of the film has a superconducting transition near the bulk transition temperature, 18 deg K, even though the total film has a high transition temperature, namely 21.5 deg K. The electron mean free path is calculated from the electron--phonon attenuation data and is found to be an order of magnitude higher than expected for high transition temperature Nb3Ge films. 9 ref.--AA
ISSN:0038-1098
DOI:10.1016/0038-1098(80)90830-3