Josephson coupling of YBa2Cu3O7−x through a ferromagnetic barrier SrRuO3
- 16 August 1993
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (7), 1005-1007
- https://doi.org/10.1063/1.109878
Abstract
Epitaxial barriers of ferromagnetic SrRuO3 have been used to fabricate high Tc superconductor‐normal‐superconductor Josephson junctions in the edge junction geometry. At small barrier thicknesses the SrRuO3 junctions follow the behavior of nonferromagnetic but otherwise closely related CaRuO3 junctions. A rapid disappearance of critical current is observed when the barrier thickness is increased to 250 Å. Possible origins of such a large critical thickness are discussed.Keywords
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