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Proceedings Paper

Optically triggered switching of superconducting YBa2Cu3O7 thin films
Author(s): Paul H. Ballentine; Alan M. Kadin; William R. Donaldson; John H. Scofield; Louis J. Bajuk
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Paper Abstract

Thin films of YBCO were used as the active element in an optically triggered fast-opening switch. These epitaxial films, up to 1 .tm thick, were deposited either by coevaporation or by if magnetron sputtering. A patterned switch structure was current-biased and subjected to 150 ps pulses from a Nd:YAG laser. Switching from the superconducting to the normal state was observed to occur as fast as 1 ns. A model is presented that can account for the observed switching characteristics in terms of the thermal and electrical times of the films; the results clearly indicate substantial film heating above the ambient temperature. Results are encouraging for potential application to a high-current opening switch.

Paper Details

Date Published: 1 October 1990
PDF: 10 pages
Proc. SPIE 1287, High Tc Superconductivity: Thin Films and Applications, (1 October 1990); doi: 10.1117/12.20892
Show Author Affiliations
Paul H. Ballentine, CVC Products, Inc. (United States)
Alan M. Kadin, Univ. of Rochester (United States)
William R. Donaldson, Univ. of Rochester (United States)
John H. Scofield, Oberlin College (United States)
Louis J. Bajuk, Oberlin College (United States)


Published in SPIE Proceedings Vol. 1287:
High Tc Superconductivity: Thin Films and Applications
Cheng-Chung John Chi; R. Bruce van Dover, Editor(s)

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