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

Tkachov, Grygoriy and Falko, Vladimir (2004) Magnetic field influence on the proximity effect in semiconductor-superconductor hybrid structures and their thermal conductance. Physical Review B, 69 (9). ISSN 1098-0121

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    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.

    Item Type: Article
    Journal or Publication Title: Physical Review B
    Additional Information: © 2004 The American Physical Society
    Subjects: Q Science > QC Physics
    Departments: Faculty of Science and Technology > Physics
    ID Code: 57029
    Deposited By: ep_importer_pure
    Deposited On: 24 Aug 2012 16:11
    Refereed?: Yes
    Published?: Published
    Last Modified: 24 Jan 2014 05:30
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/57029

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