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Current Mirror Effect and Correlated Cooper-Pair Transport in Coupled Arrays of Small Josephson Junctions

H. Shimada, P. Delsing

DOI 10.1103/PhysRevLett.85.3253 · Physical Review Letters

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Abstract

We have measured the transport properties of capacitively coupled one-dimensional arrays of small aluminum Josephson junctions. Under suitable biasing conditions, the samples act as current mirrors; the currents in the two arrays couple to each other and become equally large. The coupling is found both for currents flowing in the same direction and in opposite directions. We have also measured the time dependent fluctuations of the currents in the two arrays, and we find a strong correlation or anticorrelation of the fluctuations depending on the relative direction of the two currents.

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FormulaReported Tc (K)Pressure (GPa)Type
Al

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—Pressure not reportedunknown

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