INTERNAL FLUX MOTION IN LARGE JOSEPHSON JUNCTIONS

Abstract

A ``displaced linear branch'' has been observed in the volt-ampere characteristics of square (1 × 1-mm) Sn–Ox–Sn and Pb–Ox–Pb Josephson junctions. The slope of the linear branch is independent of magnetic field and independent of temperature below 2.2°K. It is suggested that this effect can be attributed to internal flux motion.