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Proceedings Paper

Superconducting tunneling junctions: performance and physics of alternative barrier structures
Author(s): Fred A. Jansen; Anthony J. Peacock; Nicola Rando; Peter Verhoeve; Roland H. den Hartog; J. Salmi; Ilkka Sunni
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Paper Abstract

ESA is undertaking an extensive program aimed at the fabrication of high quality superconducting tunnel junctions, based on Nb, to be used for the detection of radiation from infrared to gamma ray wavelengths. To extend our knowledge of current technology, devices have been manufactured using an alternative technology, consisting of epitaxial Nb bottom electrode film, and a variety of materials and layouts for the tunnel layers as well as the top film. A specific mask set has been designed to enable optimized fabrication, diagnostics and testing of these devices which also includes the first 3 by 3 Nb superconducting tunnel junction test array. Preliminary results are presented on the performance of various types of devices where the tunnel barrier characteristics and device size have been systematically varied.

Paper Details

Date Published: 31 October 1996
PDF: 7 pages
Proc. SPIE 2808, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII, (31 October 1996); doi: 10.1117/12.256024
Show Author Affiliations
Fred A. Jansen, European Space Agency/ESTEC (Netherlands)
Anthony J. Peacock, European Space Agency/ESTEC (Netherlands)
Nicola Rando, European Space Agency/ESTEC (Netherlands)
Peter Verhoeve, European Space Agency/ESTEC (Netherlands)
Roland H. den Hartog, European Space Agency/ESTEC (Netherlands)
J. Salmi, VTT Electronics (Finland)
Ilkka Sunni, VTT Electronics (Finland)

Published in SPIE Proceedings Vol. 2808:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII
Oswald H. W. Siegmund; Mark A. Gummin, Editor(s)

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