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Fluxon pinning in annular Josephson junctions by an external magnetic field

Vernik, I. V.; Keil, S.; Thyssen, N.; Doderer, T.; Ustinov, A. V.; Kohlstedt, H.; Huebener, R. P.


The behavior of long annular Josephson junctions with various numbers n of trapped fluxons is studied in the presence of a uniform external magnetic field parallel to the plane of the junction’s tunnel barrier. We report on measurements of the magnetic dependencies of the critical current and current–voltage characteristics with different n. Experimental results are explained by the model assuming that a barrier-parallel magnetic field produces potential wells for fluxons and antifluxons at the opposite locations. We also present numerical simulations using the perturbed sine-Gordon equation with an additional magnetic-field-induced term. Good agreement is found between the measured critical current versus magnetic-field dependencies and the numerical simulations.

DOI: 10.1063/1.363868
Zitationen: 24
Web of Science
Zitationen: 25
Zitationen: 26
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 02.1997
Sprache Englisch
Identifikator ISSN: 0021-8979, 0148-6349, 1089-7550
KITopen-ID: 1000076137
Erschienen in Journal of applied physics
Verlag American Institute of Physics (AIP)
Band 81
Heft 3
Seiten 1335–1340
Nachgewiesen in Web of Science
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