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Interface structure of a YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}/N/YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} superconductor/normal metal/superconductor Josephson junction using YBa{sub 2}Cu{sub 2.79}Co{sub 0.21}O{sub 7{minus}{ital x}} as the normal barrier N

Journal Article · · Journal of Materials Research
;  [1];  [2]
  1. Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. Conductus, Inc. 969 West Maude Avenue, Sunnyvale , California 94086 (United States)
Superconductor-normal-superconductor (SNS) edge junctions consisting of YBa{sub 2}Cu{sub 3}O{sub 7}/ YBa{sub 2}Cu{sub 2.79}Co{sub 0.21}O{sub 7{minus}{ital x}}/YBa{sub 2}Cu{sub 3}O{sub 7} were fabricated on (001) YSZ substrates using laser deposition. In contrast to other SNS junctions, e.g., with La{sub 0.5}Sr{sub 0.5}CoO{sub 3}, CaRuO{sub 3}, or SrRuO{sub 3} 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 CaRuO{sub 3} SNS junctions. {copyright} {ital 1996 Materials Research Society.}
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
278653
Journal Information:
Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 2 Vol. 11; ISSN JMREEE; ISSN 0884-2914
Country of Publication:
United States
Language:
English