| Numéro |
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C5-701 - C5-705 | |
| DOI | https://doi.org/10.1051/jphyscol:19815108 | |
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-701-C5-705
DOI: 10.1051/jphyscol:19815108
The Institute of Scientific and Industrial Research, Osaka University, Suita Osaka 565, Japan
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-701-C5-705
DOI: 10.1051/jphyscol:19815108
ACOUSTIC ATTENUATION OF SURFACE ACOUSTIC WAVES IN SUPERCONDUCTING THIN FILMS OF AMORPHOUS Bi
M. Toguchi et F. AkaoThe Institute of Scientific and Industrial Research, Osaka University, Suita Osaka 565, Japan
Abstract
The surface acoustic wave (SAW) propagating on a piezoelectric substrate is accompanied by electric fields which can interact with charge carriers in an adjacent metal film. This interaction causes the attenuation of the SAW. We studied the interaction between the SAW and the normal electrons in the amorphous Bi film which is evaporated on a LiNbO3 substrate. The product of the mobility (μ) and the Fermi energy (EF) of the amorphous Bi was obtained from the experimental results and was evaluated to be 2.4x103(cm2/Vs)eV. And the steep change of the attenuation due to the acoustoelectric effect has been observed at the superconducting temperature Tc.