Moving pearl vortices in thin-film superconductors

Abstract

The magnetic field hz of a moving Pearl vortex in a superconducting thin-film in (x, y) plane is studied with the help of the time-dependent London equation. It is found that for a vortex at the origin moving in +x direction, hz (x, y) is suppressed in front of the vortex, x > 0, and enhanced behind (x < 0). The distribution asymmetry is proportional to the velocity and to the conductivity of normal quasiparticles. The vortex self-energy and the interaction of two moving vortices are evaluated.