Speed limit to the Abrikosov lattice in mesoscopic superconductors
  We study the instability of the superconducting state in a mesoscopic geometry for the low pinning material Mo$_3$Ge characterized by a large Ginzburg-Landau parameter. We observe that in the current driven switching to the normal state from a nonlinear region of the Abrikosov flux flow, the mean critical vortex velocity reaches a limiting maximum velocity as a function of the applied magnetic field. Based on time dependent Ginzburg-Landau simulations we argue that the observed behavior is due to the high velocity vortex dynamics confined on a mesoscopic scale. We build up a general phase diagram which includes all possible dynamic configurations of Abrikosov lattice in a mesoscopic superconductor. 
G. Grimaldi, A. Leo, P. Sabatino, G. Carapella, A. Nigro, S. Pace, V.   V. Moshchalkov, and A. V. Silhanek
cond-mat.supr-con cond-mat.mes-hall