Flux-Cutting in YBa$_{2}$Cu$_{3}$O$_{7-\delta}$ single crystals:   Experiment and Phenomenological model
  We measured the current induced loss of vortex correlation in YBCO crystals using the pseudo DC flux transformer geometry. We find that the current $I_{cut}$ at which the top and bottom voltage differ is a linear function of temperature independent of pinning. Although the vortex correlation length at $I_{cut}$ coincides with the sample thickness, the experimental data show that $I_{cut}$ is sample thickness independent. The observed behavior with temperature, magnetic field and thickness is described by a phenomenological model. 
D. L\'opez, G. Nieva, F. de la Cruz, H.J. Jensen and D.O'Kane