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arXiv · 2209.11536

Oscillating Solitons and AC Josephson Effect in Ferromagnetic Bose-Bose Mixtures

Sebastiano Bresolin·Arko Roy·Gabriele Ferrari·Alessio Recati·Nicolas Pavloff
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Abstract

Close to the demixing transition, the degree of freedom associated to relative density fluctuations of a two-component Bose-Einstein condensate is described by a non-dissipative Landau-Lifshitz equation. In the quasi one-dimensional weakly immiscible case, this mapping surprisingly predicts that a dark-bright soliton should oscillate when subject to a constant force favoring separation of the two components. We propose a realistic experimental implementation of this phenomenon which we interpret as a spin-Josephson effect in the presence of a movable barrier.

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Sebastiano Bresolin, Arko Roy, Gabriele Ferrari, Alessio Recati, Nicolas Pavloff. 2022-09-23. Oscillating Solitons and AC Josephson Effect in Ferromagnetic Bose-Bose Mixtures. https://doi.org/10.1103/physrevlett.130.220403

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