Comunicazione
Breather-enhanced Josephson thermal transport.
De Santis D., Spagnolo B., Carollo A., Valenti D., Guarcello C.
We show that breathers, $i.e.$, fluxon-antifluxon oscillating bound states, enhance the thermal transport in thermally-biased long Josephson junctions. This provides a solitonic channel for mastering the local temperature throughout the system. The novel physical property also paves the way for a long-awaited breather detection scheme which does not require the bound state's destruction. Notably, the precise shape of the (breather-induced) local thermal peak depends on the breathing frequency. The latter quantity can thus be measured in an experiment. Then, we exploit the simultaneous action of noisy and ac forces for exciting and stabilizing the breather modes, and we demonstrate the robustness of the results in a realistic scenario.