Intrinsic superconductor/normal-metal/superconductor-like weak links in Y1Ba2Cu3O7−x thin films
- 5 December 1988
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (23), 2336-2338
- https://doi.org/10.1063/1.100517
Abstract
Magnetotransport measurements on micron‐sized wires of the thin‐film high Tc superconductor Y1 Ba2 Cu3 O7−x made by pulsed laser deposition reveal an exponential suppression of the critical current with magnetic field, and a power law dependence of the critical current on reduced temperature. We ascribe this behavior to crystallographic defects in the film which behave as superconductor/normal‐metal/superconductor weak links in a magnetic field. From the measurements we estimate a critical current density of 106 A cm−2 in a field of 16 T at 4.2 K.Keywords
This publication has 13 references indexed in Scilit:
- Granular superconductivity inthin filmsPhysical Review B, 1988
- As-deposited high T c and J c superconducting thin films made at low temperaturesApplied Physics Letters, 1988
- Preparation of high T c and J c films of Ba2YCu3O7 using laser evaporation of a composite target containing BaF2Applied Physics Letters, 1988
- Non-Ohmic dissipative regime in the superconducting transition of polycrystallinePhysical Review Letters, 1988
- Reproducible technique for fabrication of thin films of high transition temperature superconductorsApplied Physics Letters, 1987
- Current transport in high-polycrystalline films of Y-Ba-Cu-OPhysical Review B, 1987
- Growth of high T c superconducting thin films using molecular beam epitaxy techniquesApplied Physics Letters, 1987
- Estimate of Attainable Critical Current Density in Superconducting YBa2Cu3O7-δJapanese Journal of Applied Physics, 1987
- Preparation of Y-Ba-Cu oxide superconductor thin films using pulsed laser evaporation from high T c bulk materialApplied Physics Letters, 1987
- Thin superconducting oxide filmsPhysical Review B, 1987