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
- Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- 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-31-109-ENG-38
- OSTI ID:
- 278653
- Journal Information:
- Journal of Materials Research, Vol. 11, Issue 2; Other Information: PBD: Feb 1996
- Country of Publication:
- United States
- Language:
- English
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