Coherent effects in double-barrier Josephson junctions

Abstract

The general solution for ballistic electronic transport through double-barrier Josephson junctions is derived. We show the existence of a regime of phase-coherent transport in which the supercurrent is proportional to the single barrier transparency and the way in which this coherence is destroyed for increasing interlayer thickness. The quasiparticle dc current at arbitrary voltage is determined.

4 pages, 2 figures, submitted to Phys. Rev. B

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