Magnetic field influence on the proximity effect in semiconductor- superconductor hybrid structures and their thermal conductance

Grygoriy Tkachov, Vladimir I. Fal'ko

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We show that a magnetic field can influence the proximity effect in NS junctions via diamagnetic screening current flowing in the superconductor. Using ballistic quasi-one-dimensional (Q1D) electron channels as an example, we show that the supercurrent flow shifts the proximity-induced minigap in the excitation spectrum of a Q1D system from the Fermi level to higher quasiparticle energies. Thermal conductance of a Q1D channel (normalized by that of a normal Q1D ballistic system) is predicted to manifest such a spectral feature as a nonmonotonic behavior at temperatures corresponding to the energy of excitation into the gapful part of the spectrum.

    Original languageEnglish
    Article number092503
    Pages (from-to)925031-925034
    Number of pages4
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume69
    Issue number9
    Publication statusPublished - Mar 2004

    Research Beacons, Institutes and Platforms

    • National Graphene Institute

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