Theories of subharmonic gap structures in superconducting junctions

L.-E. Hasselberg, M. T. Levinsen, and M. R. Samuelsen
Phys. Rev. B 9, 3757 – Published 1 May 1974
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Abstract

The two theories of subharmonic gap structures in superconducting junctions, multiparticle tunneling and self-coupling due to an electromagnetic field set up by the ac Josephson current, are analyzed when microwaves are applied. Both theories give the same location in voltage for the microwave-induced satellites and the same microwave-power dependence for the subharmonic gap structure and the satellites. Therefore other properties than these are to be considered in order to distinguish between the two theories. We suggest that self-coupling is the main cause of the subharmonic gap structure.

  • Received 2 October 1973

DOI:https://doi.org/10.1103/PhysRevB.9.3757

©1974 American Physical Society

Authors & Affiliations

L.-E. Hasselberg*

  • Department of Theoretical Physics, The Royal Institute of Technology, Stockholm, Sweden

M. T. Levinsen

  • Physics Laboratory I, H.C. Ørsted Institute, University of Copenhagen, Denmark

M. R. Samuelsen

  • Physics Laboratory I, Technical University of Denmark, DK-2800 Lyngby, Denmark

  • *Present address: NORDITA, Copenhagen and Physics Laboratory I, Technical University of Denmark, DK-2800 Lyngby, Denmark.
  • Present address: Department of Astronomy, The University of Texas at Austin, Austin, Texas 78712.

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Vol. 9, Iss. 9 — 1 May 1974

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