Аннотация:We studied electronic transport in Josephson bridges of variable thickness Superconductor-Normal Metal-Superconductor (SNS) theoretically and experimentally. We found a significant influence of the electrode size on the critical current, current-phase ratio and critical temperature of the Josephson junction. The microscopic description of the Josephson SNS bridge was modified in the framework of the Usadel equations, taking into account inhomogeneous supercurrent spatial distribution in the electrode and phase drop at the boundary between the normal metal region and the superconducting electrode. We have shown that these factors lead to an increase in the characteristic length of the current flow between the superconducting electrode and the normal metal layer.
