Bulletin of the Russian Academy of Sciences: Physics

, Volume 73, Issue 7, pp 880–882

Electronic transport in mesoscopic superconductor/2D electron gas junctions in strong magnetic field

Authors

    • Institute of Solid State PhysicsRussian Academy of Sciences
    • Physikalisches Institut IIIUniversität Erlangen-Nürnberg
  • Th. Schaepers
    • Institute of Bio- and Nanosystems (IBN-1) and cni-Center of Nanoelectronic Systems for Information TechnologyResearch Centre Juelich
  • N. M. Chtchelkatchev
    • Landau Institute for Theoretical Physics
  • A. A. Golubov
    • University of Twente
  • H. Hardtdegen
    • Institute of Bio- and Nanosystems (IBN-1) and cni-Center of Nanoelectronic Systems for Information TechnologyResearch Centre Juelich
  • A. V. Ustinov
    • Physikalisches Institut IIIUniversität Erlangen-Nürnberg
Proceedings of the International Symposium “Low-Dimensional Systems and Surfaces” (LDS-2008), Proceedings of the International Symposium “Orderings in Minerals and Alloys” (OMA-11) and Proceedings of the International Symposium “Order, Disorder,

DOI: 10.3103/S1062873809070053

Cite this article as:
Batov, I.E., Schaepers, T., Chtchelkatchev, N.M. et al. Bull. Russ. Acad. Sci. Phys. (2009) 73: 880. doi:10.3103/S1062873809070053
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Abstract

The hybrid superconductor/2D electron gas (S/2DEG) structures based on InGaAs-InP hetero-junctions with a high-mobility 2D electron gas and superconducting NbN electrodes have been investigated. The electronic transport and current-voltage characteristics of S/2DEG/normal metal (S/2DEG/N) structures in strong perpendicular magnetic fields have been studied. Oscillations in the magnetoresistance of S/2DEG/N structures have been found in strong magnetic fields. It is shown that at bias voltages lower than the superconducting gap the amplitude of oscillations in S/2DEG/N structures significantly exceeds the oscillation amplitude in the reference N/2DEG/N samples. The experimental results can be explained within the quasiclassical theory of magnetotransport in S/2DEG structures developed by N.M. Chtchelkatchev and I.S. Burmistrov (Phys. Rev. B, 2007, vol. 75, 214 510).

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© Allerton Press, Inc. 2009