Magnetoresistance probe of spatial current variations in high-T c YBa2Cu3O7–SrRuO3–YBa2Cu3O7 Josephson junctions
- 28 August 1995
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 67 (9) , 1313-1315
- https://doi.org/10.1063/1.114524
Abstract
The low frequency current–voltage characteristics of YBa2Cu3O7–SrRuO3–YBa2Cu3O7 Josephson junctions show an increasing resistance and phase shift in fields of 0 to 8 T. A critical current is also evident up to 8 T. Data are analyzed in terms of field‐induced perturbations of the current paths through the junction. Results indicate a highly inhomogeneous interface where the mean width of spatial variations in both normal and supercurrent is of order 50 to 100 Å.Keywords
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