Multiple Andreev reflections in hybrid multiterminal junctions

Abstract

We investigate theoretically charge transport in hybrid multiterminal junctions with superconducting leads kept at different voltages. It is found that multiple Andreev reflections involving several superconducting leads give rise to rich subharmonic gap structures in the current-voltage characteristics. The structures are evidenced numerically in junctions in the incoherent regime.

5 pages, 3 figures

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• Proposal for the observation of nonlocal multipair production: the biSQUID
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• Tunable pseudogaps due to non-local coherent transport in voltage-biased three-terminal Josephson junctions
• Phase-sensitive transport at a normal metal-superconductor interface close to a Josephson junction
• D.C. Josephson transport by quartets and other Andreev resonances in superconducting bijunctions