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Trapped fluxons in annular Josephson junctions in the external magnetic field

  • LTSC—Tunnelling Phenomena, Layered Structures, Weak Links, Proximity Effects
  • Published:
Czechoslovak Journal of Physics Aims and scope

Abstract

The behavior of a long annular Josephson junction is studied in presence of an externally applied magnetic field. We report on measurements of the critical current dependencies on magnetic field with various numbers of trapped fluxons. The magnetic field produces opposite-located potential wells for fluxon and antifluxon. The images obtained by low temperature scanning electron microscopy prove that fluxon and antifluxon are pinned by these field-induced wells. Good agreement is found between experiment and numerical simulations.

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Author notes

  1. I. V. Vernik

    Present address: Institute of Solid State Physics, Russian Academy of Science, 142432, Chernogolovka, Russia

Authors and Affiliations

  1. Experimentalphysik II, Universität Tübingen, Auf der Morgenstelle 14, D-72076, Tübingen, Germany

    I. V. Vernik, S. Keil, T. Doderer & R. P. Huebener

  2. Institut für Schicht- und Ionentechnik, Forschungszentrum Jülich (KFA), D-52425, Jülich, Germany

    A. V. Ustinov, N. Thyssen & H. Kohlstedt

Authors
  1. I. V. Vernik
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  2. S. Keil
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  3. A. V. Ustinov
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  4. N. Thyssen
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  5. T. Doderer
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  6. H. Kohlstedt
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  7. R. P. Huebener
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Additional information

The financial support from the DAAD is greatly acknowledged.

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Vernik, I.V., Keil, S., Ustinov, A.V. et al. Trapped fluxons in annular Josephson junctions in the external magnetic field. Czech J Phys 46 (Suppl 2), 649–650 (1996). https://doi.org/10.1007/BF02583632

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  • DOI: https://doi.org/10.1007/BF02583632

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