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Interface structure of a YBa2Cu3O7−x/N/YBa2Cu3O7−x superconductor/normal metal/superconductor Josephson junction using YBa2Cu2.79Co0.21O7−x as the normal barrier N

Published online by Cambridge University Press:  31 January 2011

S. Rozeveld ,
K. L. Merkle  and
K. Char
S. Rozeveld
Affiliation:
Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439
K. L. Merkle
Affiliation:
Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439
K. Char
Affiliation:
Conductus, Inc., 969 West Maude Avenue, Sunnyvale, California 94086
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Abstract

Superconductor-normal-superconductor (SNS) edge junctions consisting of YBa2Cu3O7/YBa2Cu2.79Co0.21O7−x/YBa2Cu3O7 were fabricated on (001) YSZ substrates using laser deposition. In contrast to other SNS junctions, e.g., with La0.5Sr0.5CoO3, CaRuO3, or SrRuO3 as the barrier layer, these devices do not display an excess normal-state resistance. High-resolution and conventional transmission electron microscopy (TEM) techniques were employed to investigate the SN interface structure and possible interface defects. Results are compared to recent TEM investigations of CaRuO3 SNS junctions.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 2 , February 1996 , pp. 281 - 287
Copyright
Copyright © Materials Research Society 1996

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References

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