Abstract
We have fabricated and tested samples consisting of two long stacked Josephson junctions with direct access to the intermediate electrode, whose thickness is smaller than London penetration depth λ L . The electrodes are patterned so that the junctions can be independently biased in theoverlap geometry. We report the behaviour of the critical current of one junction as a function of an applied magnetic field (while the other junction is unbiased) and as a function of the bias current along the McCumber curve in the other junction. We find strong similarity in the two cases and compare the experimental results with numerical simulation.
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