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The Response of Two-Dimensional Granular Superconducting Films to Light

Published online by Cambridge University Press:  28 February 2011

J. C. Culbertson ,
U. Strom  and
S. A. Wolf
J. C. Culbertson
Affiliation:
Naval Research Laboratory, Washington, D.C
U. Strom
Affiliation:
Naval Research Laboratory, Washington, D.C
S. A. Wolf
Affiliation:
Naval Research Laboratory, Washington, D.C
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Abstract

We have examined the photoresponse of two-dimensional granular superconducting films of high Tc superconductors (Y-Ba-Cu-O). We see evidence for the existence of a twodimensional Kosterlitz-Thouless transition. The photoresponse and resistance have been measured as a functions of temperature, excitation power, bias current, and photon energy. The response to photons having energies above and below the superconducting energy gap(s) has been measured. Photoresponse features have been observed that are not explainable in terms of a conventional phonon bolometric mechanism. Comparison will be made with similar observations made on low temperature superconducting films (NbN-BN).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 195: Symposium S – Physical Phenomena in Granular Materials , 1990 , 327
Copyright
Copyright © Materials Research Society 1990

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References

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