Enhancement of the Josephson critical current in a multiterminal SINIS device under current injection

I. P. Nevirkovets; S. E. Shafranjuk; O. Chernyashevskyy; J. B. Ketterson

doi:10.1103/PhysRevB.76.184520

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Enhancement of the Josephson critical current in a multiterminal SINIS device under current injection

I. P. Nevirkovets, S. E. Shafranjuk, O. Chernyashevskyy, J. B. Ketterson

DOI 10.1103/PhysRevB.76.184520 · Physical Review B

T1

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Abstract

In a multiterminal SINIS (Nb∕Al∕AlOx∕Al∕AlOx∕Al∕Nb) device (where S, I, and N denote a superconductor, insulator, and normal metal), which has electrical leads connected to the middle N (Al) layer, a current passing through one of the subjunctions (NIS) modulates the supercurrent through the other subjunction (SIN), so that, at some injection levels, the supercurrent increases above its steady state value. A theoretical model is given that describes the effect in terms of nonlinear coupling of the two subjunctions due to the electric current controlled by the proximity effect in the N layer.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown