Solitonic thermal transport in a current biased long Josephson junction

Abstract

We investigate the coherent energy and thermal transport in a temperature-biased long Josephson tunnel junction, when a Josephson vortex, i.e., a soliton, steadily drifts driven by an electric bias current. We demonstrate that thermal transport through the junction can be controlled by the bias current, since it determines the steady-state velocity of the drifting soliton. We study the effects on thermal transport of the damping affecting the soliton dynamics. In fact, a soliton locally influences the power flowing through the junction and can cause the variation of the temperature of the device. When the soliton speed increases approaching its limiting value, i.e., the Swihart velocity, we demonstrate that the soliton-induces thermal effects significantly modify. Finally, we discuss how the appropriate material selection of the superconductors forming the junction is essential, since short quasiparticle relaxation times are required to observe fast thermal effects.

9 pages, 5 figures

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• Supratransmission-induced travelling breathers in long Josephson junctions
• Stability of bubble-like fluxons in disk-shaped Josephson junctions in the presence of a coaxial dipole current
• Thermal flux-flow regime in long Josephson tunnel junctions
• Cyclic Superconducting Quantum Refrigerators Using Guided Fluxon Propagation
• The impact of thermal noise on kink propagation through a heterogeneous system