Cherenkov steps and strongly deformed fluxons in finite length window junctions

N. Lazarides, N. Flytzanis

    Research output: Contribution to journalArticlepeer-review

    1 Scopus citations


    The long linear window junction with lateral idle region is modelled by an effectively nonlocal sine-Gordon-type equation, and the fluxon dynamics is investigated numerically. The idle region introduces dispersion in the junction, leading to radiation emission via the Cherenkov effect. Cherenkov steps appear on the first zero field step of the I-V characteristics, due to strong nonlinear interaction of the moving fluxon and the radiation. This interaction leads to peculiar, highly nonuniform fluxon motion, which is described phenomenologically. In some cases, the fluxon appears to move discontinuously, jumping from one position to another.

    Original languageBritish English
    Pages (from-to)202-210
    Number of pages9
    JournalSuperconductor Science and Technology
    Issue number1
    StatePublished - Jan 2004


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