Fluxon-fluxon collision testing by a dissipative spot

Alexey V. Ustinov, Boris A. Malomed

Research output: Contribution to journalArticlepeer-review


Fluxon collisions have recently been successfully imaged by a focused electron beam [A. Laub et al., Phys. Rev. Lett. 75, 1372 (1995)]. This report presents numerical and analytical calculations of the effect of a beam-induced dissipative spot on a fluxon-fluxon collision in a long Josephson junction. In contrast to the fluxon-antifluxon collision, the energy loss for the colliding fluxons of the same polarity is minimal at the collision point. Good accord between analytical and numerical results is found. Presented calculations are relevant for interpretation of the low temperature scanning electron microscopy experiments on fluxon imaging in long Josephson junctions.

Original languageEnglish
Pages (from-to)9047-9049
Number of pages3
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number13
StatePublished - 1996
Externally publishedYes


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