Ultrasonic investigation of amorphous superconducting films
J. Schmidt, M. Levy, A. F. Hebard
DOI 10.1103/PhysRevB.50.3988 · Physical Review B
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Abstract
Measurements of the surface-acoustic-wave (SAW) attenuation and dc resistance of several amorphous superconducting In/InOx films as a function of temperature exhibit an excess SAW attenuation below the Kosterlitz-Thouless transition temperature, which cannot be accounted for by the presence of flux-flow resistance due to unbound vortices in these films. Qualitative agreement with the observed SAW attenuation below the Kosterlitz-Thouless temperature may be obtained by using a model based on the attenuation produced by bound vortex pairs present in the films below the Kosterlitz-Thouless transition temperature.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| In/InOx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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