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High TC Superconducting Switch

Published online by Cambridge University Press:  26 February 2011

T. S. Kalkur  and
Dave Ward
T. S. Kalkur
Affiliation:
Microelectronics Research Laboratories Dept. of Electrical and Computer Engineering, University of Colorado at Colorado Springs Colorado Springs, CO 80933–7150
Dave Ward
Affiliation:
Microelectronics Research Laboratories Dept. of Electrical and Computer Engineering, University of Colorado at Colorado Springs Colorado Springs, CO 80933–7150
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Abstract

A switch has been developed which uses a thin film of Y-Ba-Cu-O as a switching element. The two important process parameters in the fabrication of the switch - contact resistance between a metal and a superconductor and the passivation of the superconducting films by SiO2 have been studied. The thin film of superconductor is patterned into a narrow line (gate) crossed by a metal control line with a deposited SiO2 as an insulation layer between them. When the control line carries current large enough to switch the gate into the normal state the gate is in the ‘off’ state. When no current is present, the gate is superconducting and it is in the ‘on’ state. The operation of the device was verified by testing at 77 K. Applications of the device include amplifiers, digital logic circuits, and microwave switches.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 275: Symposium S – Layered Superconductors: Fabrication, Properties and Applications , 1992 , 571
Copyright
Copyright © Materials Research Society 1992

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References

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