Nonequilibrium edge transport in quantum Hall based Josephson junctions

C. A. Balseiro; Gonzalo Usaj; Lucila Peralta Gavensky

Nonequilibrium edge transport in quantum Hall based Josephson junctions

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arxiv 2010.13805 v2 pith:NA2CVA7P submitted 2020-10-26 cond-mat.mes-hall

Lucila Peralta Gavensky , Gonzalo Usaj , C. A. Balseiro This is my paper · ORCID

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We study the transport properties of a voltage-biased Josephson junction where the BCS superconducting leads are coupled via the edges of a quantum Hall sample. In this scenario, an out of equilibrium Josephson current develops, which is numerically studied within the Floquet-Keldysh Green's function formalism. We particularly focus on the time-averaged current as a function of both the bias voltage and the magnetic flux threading the sample and analyze the resonant multiple Andreev reflection processes that lead to an enhancement of the quasiparticle transmission. We find that a full tomography of the dc current in the voltage-flux plane allows for a complete spectroscopy of the one-way edge modes and could be used as a hallmark of chiral edge mediated transport in these hybrid devices.

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