Static semifluxons in a long Josephson junction with π-discontinuity points

H. Susanto, S.A. van Gils, T.P.P. Visser, Ariando, H.J.H. Smilde, H. Hilgenkamp

Research output: Contribution to journalArticleAcademicpeer-review

29 Citations (Scopus)
23 Downloads (Pure)


We investigate analytically a long Josephson junction with several $\pi$-discontinuity points characterized by a jump of $\pi$ in the phase difference of the junction. The system is described by a perturbed-combined sine-Gordon equation. Via phase-portrait analysis, it is shown how the existence of static semifluxons localized around the discontinuity points is influenced by the applied bias current. In junctions with more than one corner, there is a minimum-facet-length for semifluxons to be spontaneously generated. A stability analysis is used to obtain the minimum-facet-length for multicorner junctions.
Original languageEnglish
Pages (from-to)104501
Number of pages8
JournalPhysical review B: Condensed matter and materials physics
Issue number10
Publication statusPublished - 2003


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