Anisotropic Josephson effect in all (103)-oriented YBa2Cu3O7−δ /PrBa2Cu3O7−δ′/YBa2Cu3O7−δ junctions
- 7 March 1994
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 64 (10) , 1286-1288
- https://doi.org/10.1063/1.110867
Abstract
We report a demonstration of the anisotropic Josephson effect in all (103)‐oriented junctions consisting of YBa2Cu3O7−δ /PrBa2Cu3O7−δ’/YBa2Cu3O7−δ film sandwiches. The junction shows a resistively shunted junction‐like current‐voltage characteristics with hysteresis and clear Shapiro steps under the microwave radiation. Depending on the direction of external magnetic field H, the junction exhibits anisotropic Fraunhofer interference patterns with different critical magnetic fields Hc0 and periods in the oscillation of critical current. The agreement between experimental and expected values by the Owen–Scalapino analysis for anisotropic Hc0 confirms that this anisotropic property comes from the anisotropy in the magnetic penetration depth of (103)‐oriented YBaCuO films.Keywords
This publication has 17 references indexed in Scilit:
- In-situ fabrication of SNS junction consisting of YBaCuO/PrBaCuO/YBaCuO structureIEEE Transactions on Applied Superconductivity, 1993
- Liquid-Nitrogen-Cooled Dry Etching of YBaCuO Thin FilmsJapanese Journal of Applied Physics, 1992
- Hysteretic, high T c Josephson junctions using heterostructure trilayer films grown by molecular beam epitaxyApplied Physics Letters, 1992
- Josephson characteristics in a-axis oriented YBa2Cu3O7−δ/PrBa2Cu3O7−δ′/YBa2Cu3O7−δ junctionsApplied Physics Letters, 1992
- Preparation of oxide superconducting films in MBE using NO2 and O3 gasesPhysica C: Superconductivity and its Applications, 1991
- All a-axis oriented YBa2Cu3O7−y-PrBa2Cu3O7−z-YBa2Cu3O7−y Josephson devices operating at 80 KApplied Physics Letters, 1991
- Ozone jet generator as an oxidizing reagent source for preparation of superconducting oxide thin filmReview of Scientific Instruments, 1991
- Anisotropic Josephson junctions of Y-Ba-Cu-O/Au/Nb film sandwichesApplied Physics Letters, 1990
- Fabrication of heteroepitaxial YBa2Cu3O7−x-PrBa2Cu3O7−x-YBa2Cu3O7−x Josephson devices grown by laser depositionApplied Physics Letters, 1989
- As-grown Y-Ba-Cu-O thin films by reactive coevaporation with oxygen plasma coolingJournal of Applied Physics, 1989