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Supratransmission-induced traveling breathers in long Josephson junctions

  • Authors: Duilio De Santis; Claudio Guarcello; Bernardo Spagnolo; Angelo Carollo; Davide Valenti
  • Publication year: 2022
  • Type: Articolo in rivista
  • OA Link:


The emergence of traveling sine-Gordon breathers due to the nonlinear supratrans-mission effect is theoretically studied in a long Josephson junction driven by suitable magnetic pulses, taking into account the presence of dissipation, a current bias, and a thermal noise source. The simulations clearly indicate that, depending on the pulse's shape and the values of the main system parameters, such a configuration can effectively yield breather excitations only. Furthermore, a nonmonotonic behavior of the breather -only generation probability is observed as a function of the noise intensity. Finally, the dynamics of the supratransmission-induced breathers is characterized by looking at quantities such as their radiative decay lifetime and the medium's energy.