High-temperature superconductor edge-geometry SNS junctions with engineered normal-metal layers
- 1 November 1996
- journal article
- Published by IOP Publishing in Superconductor Science and Technology
- Vol. 9 (11) , 985-990
- https://doi.org/10.1088/0953-2048/9/11/010
Abstract
High-temperature superconductor Josephson junctions in an edge-geometry superconductor - normal-metal - superconductor (SNS) configuration were fabricated on substrates. The normal metal was composed of an engineered multilayer with different Pr-doping concentrations (x = 0.1, 0.3, or 0.5). Scanning tunnelling microscopy analysis on thin films provided supporting evidence for the use of such an engineered multilayer as N barrier to fabricate edge-geometry SNS junctions. The improved S - N or N - S interface, as revealed by cross-sectional transmission electron microscopy, explains the negligible interface resistance of the junctions.Keywords
This publication has 19 references indexed in Scilit:
- Transport properties of YBa2Cu3O7−δ/Y0.3Pr0.7Ba2Cu3O7−δ/YBa2Cu3 O7−δ Josephson junctionsApplied Physics Letters, 1993
- Study of interface resistances in epitaxial YBa2Cu3O7−x/barrier/YBa2Cu3O7−x junctionsApplied Physics Letters, 1993
- YBa2Cu3O7−δ-based, edge-geometry SNS Josephson junctions with low-resistivity PrBa2Cu3O7−δ barriersPhysica C: Superconductivity and its Applications, 1993
- Y1Ba2Cu3O7/MgO/Y1Ba2Cu3O7 edge Josephson junctionsApplied Physics Letters, 1992
- YBa2Cu3O7 thin-film step junctions on MgO substratesApplied Physics Letters, 1992
- High-T C superconductor-normal metal-superconductor Josephson microbridges with high-resistance normal metal linksApplied Physics Letters, 1991
- Bi-epitaxial grain boundary junctions in YBa2Cu3O7Applied Physics Letters, 1991
- Novel all-high T c epitaxial Josephson junctionApplied Physics Letters, 1991
- Controlled preparation of all high-Tc SNS-type edge junctions and DC SQUIDsPhysica C: Superconductivity and its Applications, 1990
- Low noise YBa2Cu3O7−δ grain boundary junction dc SQUIDsApplied Physics Letters, 1990