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Interplay between Josephson and Aharonov-Bohm effects in Andreev interferometers.

ABSTRACT: Proximity induced quantum coherence of electrons in multi-terminal voltage-driven hybrid normal-superconducting nanostructures may result in a non-trivial interplay between topology-dependent Josephson and Aharonov-Bohm effects. We elucidate a trade-off between stimulation of the voltage-dependent Josephson current due to non-equilibrium effects and quantum dephasing of quasiparticles causing reduction of both Josephson and Aharonov-Bohm currents. We also predict phase-shifted quantum coherent oscillations of the induced electrostatic potential as a function of the externally applied magnetic flux. Our results may be employed for engineering superconducting nanocircuits with controlled quantum properties.

SUBMITTER: Dolgirev PE

PROVIDER: S-EPMC6361916 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Interplay between Josephson and Aharonov-Bohm effects in Andreev interferometers.

Dolgirev Pavel E PE Kalenkov Mikhail S MS Zaikin Andrei D AD

Scientific reports 20190204 1

Proximity induced quantum coherence of electrons in multi-terminal voltage-driven hybrid normal-superconducting nanostructures may result in a non-trivial interplay between topology-dependent Josephson and Aharonov-Bohm effects. We elucidate a trade-off between stimulation of the voltage-dependent Josephson current due to non-equilibrium effects and quantum dephasing of quasiparticles causing reduction of both Josephson and Aharonov-Bohm currents. We also predict phase-shifted quantum coherent o ...[more]

PMID: 30718582

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