Time resolved nanosecond vortex dynamics in high Tc superconducting   films
  We report on the observation of the rearrangement of vortices in the ns time scale following a fast magnetic field variation due to selective local heating of a high Tc superconducting film. Detailed simulations describing the measured photoinduced voltage signals along the film lead to a better understanding of vortex dynamics in fast regimes, where mean vortex velocities reach 10000 m/s 
H. Ferrari, D. Ibaceta, V. Bekeris, E. Calzetta and Luigi Correra