The mutual locking of Josephson microbridges caused by the penetration of the longitudinal electric field into the superconductor

The interaction of the series-connected Josephson microbridges caused by the longitudinal electric field penetration into the superconducting thin-films was investigated theoretically and experimentally. It was shown that the interaction of microbridges nonmonotonously depends on the array´s parameters (the voltage, the distances between microbridges, the temperature) that is caused by the quasiwave character of the variable field propagation in the superconductor. The transition of one of the series connected microbridges into resistance state and its excitation of the electric field delays the transition of the second one into the resistance state, i.e. increases the tolerance of the microbridges critical currents really observed. The peculiarities of the mutual locking and current-voltage characteristics (IVC) of the bridges array associated with the penetration of the longitudinal electric field were analyzed.