Applicability of the vortex model for bridge junctions of superconductors with the A15 lattice

The properties of V3Si film contacts with variable thickness prepared by the double scribing technique are studied. The current-voltage characteristics and temperature dependence of the critical current are measured for such contacts. THe interaction between the vortex structure and alternating electromagnetic field is investigated, the current steps on the current-voltage characteristics being observed. It is shown that the model based on the movement of the Abrikosov vortexes chain through the contact is in accordance with experimental results. Some parameters of motion of the vortexes are estimated on basis of the model