Current-Voltage Characteristics of YBa2Cu3Oy/La0.7Ca0.3MnOz/YBa2Cu3Oy Trilayered-Type Junctions
- 1 December 1990
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 29 (12A), L2219
- https://doi.org/10.1143/jjap.29.l2219
Abstract
YBa2Cu3O y (superconductor)/La0.7Ca0.3MnO z (magnetic material)/YBa2Cu3O y (superconductor) trilayered-type junctions were prepared on MgO(100) single-crystal substrates, and the current-voltage characteristics were examined. The top and bottom YBa2Cu3O y layers were 200 nm thick, and the La0.7Ca0.3MnO z layer was 20, 30, 50 or 100 nm thick. A supercurrent was observed through all the La0.7Ca0.3MnO z layers, even the thickest one. Further investigation showed that a supercurrent could he observed through the 500-nm barrier layer.Keywords
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