Scattering of quasi-one-dimensional solitons on impurities in large Josephson junctions

  • Starodub I
  • Zolotaryuk Y
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Abstract

Fluxon transmission through impurities of different shape in a quasi-one-dimensional long Josephson junction is investigated. The junction width is significantly less than its length but, at the same time, is of the order of the Josephson penetration length λJor exceeds it. The retrapping current on the impurities of the point, line and rectangular shape is computed as a function of the junction width both numerically and analytically. Good agreement between the analytic formulae and the numerical simulation results for the intermediate (several λJ) junction width is observed. © 2012 Elsevier B.V.

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Starodub, I., & Zolotaryuk, Y. (2012). Scattering of quasi-one-dimensional solitons on impurities in large Josephson junctions. Physics Letters A, 1–16. https://doi.org/10.1016/j.physleta.2012.09.033

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