Fluxon dynamics in long annular Josephson tunnel junctions

Publication: Research - peer-reviewJournal article – Annual report year: 1998

  • Author: Martucciello, N.

    Università degli Studi di Salerno

  • Author: Mygind, Jesper

    Biophysics and complex systems, Department of Physics, Technical University of Denmark, Fysikvej, 2800, Kongens Lyngby, Denmark

  • Author: Koshelets, V.P.

    Institute of Radio Engineering and Electronics RAS

  • Author: Shchukin, A.V.

    Institute of Radio Engineering and Electronics RAS

  • Author: Filippenko, L.

    Institute of Radio Engineering and Electronics RAS

  • Author: Monaco, R

    Università degli Studi di Salerno

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Single-fluxon dynamics has been experimentally investigated in high-quality Nb/Al-AlOx/Nb annular Josephson tunnel junctions having a radius much larger than the Josephson penetration depth. Strong evidence of self-field effects is observed. An external magnetic field in the barrier plane acts on the fluxon as a periodic potential and lowers its average speed. Further, the results of perturbative calculations do not fit the experimental current-voltage profile and, provided the temperature is low enough, this profile systematically shows pronounced deviations from the smooth predicted form. The deviations take the form of fine, hysteretic, almost equally spaced structures.
Original languageEnglish
JournalPhysical Review B Condensed Matter
Publication date1998
Volume57
Issue9
Pages5444-5449
ISSN0163-1829
DOIs
StatePublished

Bibliographical note

Copyright (1998) by the American Physical Society.

CitationsWeb of Science® Times Cited: 25

Keywords

  • MAGNETIC-FIELD
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