Frustration-driven Josephson phase dynamics

The Josephson equations predict remarkable effects concerning the phase state of a superconducting junction with an oscillating current induced by static voltage. Whether paradigm can be twisted yielding voltage without making use harmonic drives is fundamentally relevant problem yet not fully settled. Here, we demonstrate that dynamical regime evolution general hallmark driven systems exhibiting sign competition in couplings. We show frustrated dynamics gets switched on driving changeover among different ground states, which varying parameters set state. Remarkably, character transitions space allows types dynamics, few or several harmonics. This result sets out characteristic mark any system couplings and exploited to disentangle complexity underlying phases.