Pinning of a fluxon chain in a long Josephson junction with a lattice of inhomogeneities: Theory and experiment

Boris A. Malomed, Alexey V. Ustinov

Research output: Contribution to journalArticlepeer-review

Abstract

A pinning force acting upon a periodic fluxon chain in a long Josephson junction with a commensurable periodic lattice of local inhomogeneities is calculated by means of a perturbation theory. The pinning force for a single fluxon is also calculated. Dynamics of a chain and of a single fluxon are also studied. The experimental part of the paper reports results of measurements of a critical bias current Ic versus external magnetic field H. The measurements have been performed for long overlap Nb-NbOx-Pb junctions Ic(H) curve were observed at multiple values of H. Agreement between the theory and experiment for different spatial periods of the fluxon chain is satisfactory.

Original languageEnglish
Pages (from-to)3791-3797
Number of pages7
JournalJournal of Applied Physics
Volume67
Issue number8
DOIs
StatePublished - 1990
Externally publishedYes

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