| Numéro |
J. Phys. Colloques
Volume 46, Numéro C10, Décembre 1985
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C10-703 - C10-706 | |
| DOI | https://doi.org/10.1051/jphyscol:198510154 | |
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-703-C10-706
DOI: 10.1051/jphyscol:198510154
1 Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, U.S.A.
2 Sperry Corporation, Sperry Park, PO Box 6425, MS U1M14, St. Paul, MN 55164-0525, U.S.A.
3 Westinghouse Electric Corporation, Research and Development Center, Pittsburgh, PA 15235, U.S.A.
J. Phys. Colloques 46 (1985) C10-703-C10-706
DOI: 10.1051/jphyscol:198510154
DETECTION OF BOUND VORTEX-ANTIVORTEX PAIRS IN A SUPERCONDUCTING THIN FILM BY SURFACE ACOUSTIC WAVES
A. SCHENSTROM1, M. LEVY1, H.P. FREDRICKSEN2 and J. GAVALER31 Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, U.S.A.
2 Sperry Corporation, Sperry Park, PO Box 6425, MS U1M14, St. Paul, MN 55164-0525, U.S.A.
3 Westinghouse Electric Corporation, Research and Development Center, Pittsburgh, PA 15235, U.S.A.
Abstract
The possibility of detecting the normal cores of vortices in a superconducting thin film, by acoustoelectric coupling of surface acoustic waves to the local sheet resistivity of the film, is discussed. The attenuation of 700 MHz SAW's by a superconducting NbN film has already been reported. We find that the observed attenuation is proportional to the density of these vortices.