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arXiv · 2205.01990

Supratransmission-induced travelling breathers in long Josephson junctions

Duilio De Santis·Claudio Guarcello·Bernardo Spagnolo·Angelo Carollo·Davide Valenti
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Abstract

The emergence of travelling sine-Gordon breathers due to the nonlinear supratransmission 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.

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Duilio De Santis, Claudio Guarcello, Bernardo Spagnolo, Angelo Carollo, Davide Valenti. 2022-05-04. Supratransmission-induced travelling breathers in long Josephson junctions. https://doi.org/10.1016/j.cnsns.2022.106736

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