Influence of the measuring-circuit configuration on the time-dependent flux-flow voltage

The instantaneous voltage generated by multiquantum flux tubes moving through a superconducting specimen depends upon both the instantaneous flux-flow velocity and the spatial configuration of the measuring circuit. For the case of two different voltage lead arrangements, for the first time the different temporal voltage profiles along constricted type I superconducting films have been recorded, using a highly sensitive signal-averaging technique. All experimental results were in good agreement with theoretical model considerations.