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Proceedings Paper

Investigation of high-Tc superconducting tunnel junction after laser radiation processing
Author(s): U. U. Broslavez; A. A. Fomitchev; Mikhail A. Yakshin
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Paper Abstract

We investigate dynamic resistance (dV/dI) of high-Tc superconducting thin films and tunnel junction after laser radiation processing. The films of YBaCuO were prepared by laser and magnetron ablation on Al2O3 substrates. The tunnel junctions were made by fine silver wires attached to the processing surfaces. The resistance (dV/dI) was determined by a four-probe measurement. The YAG laser operating in Q-switched mode was used to interact with superconductors. The anomaly is observed in the current-voltage curve of the junction after radiation interaction. We observe hysteresis in the shape of V(I) curve. These effects are not observed without laser radiation interaction and in this case the behavior of tunnel junction is described for the standard BCS theory.

Paper Details

Date Published: 1 March 1995
PDF: 8 pages
Proc. SPIE 2498, Laser Methods of Surface Treatment and Modification: ALT '94 International Conference, (1 March 1995); doi: 10.1117/12.203615
Show Author Affiliations
U. U. Broslavez, Moscow Institute of Physics and Technology (Russia)
A. A. Fomitchev, Moscow Institute of Physics and Technology (Russia)
Mikhail A. Yakshin, Moscow Institute of Physics and Technology (Russia)


Published in SPIE Proceedings Vol. 2498:
Laser Methods of Surface Treatment and Modification: ALT '94 International Conference
Alexander M. Prokhorov; Vladimir I. Pustovoy, Editor(s)

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