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

Tkachov, G 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
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 Aug 2012 16:11
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57029

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