Josephson effects in a superconductor-normal metal mesoscopic structure with a dangling superconducting arm

Abstract

We studied a mesoscopic cross-like normal metal structure connected to two superconducting (S) and two normal (N) reservoirs. We observed the Josephson effect under unusual conditions when there is no current through one of the two S/N interfaces. The potential difference between the S reservoirs was zero unless the voltage applied between S and N reservoirs exceeded a critical value although the electric potential in the N wire connecting the superconductors varied in a nonmonotonic way. The observed effects are discussed theoretically.

5 pages, 4 figures, to be published in PRB Rapid Communication

References in corpus (3)

• Long-Range Coherence in a Mesoscopic Metal near a Superconducting Interface
• Observation of supercurrent enhancement in SNS junctions by non-equilibrium injection into supercurrent carrying bound Andreev states
• Suppression and enhancement of the critical current in multiterminal S/N/S mesoscopic structures

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