We study the instability of the superconducting state in a mesoscopic geometry for the low pinning material Mo3Ge 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 limitingmaximum velocity as a function of the appliedmagnetic 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 the Abrikosov lattice in a mesoscopic superconductor

Speed limit to the Abrikosov lattice in mesoscopic superconductors

GRIMALDI, Gaia;LEO, ANTONIO;SABATINO, PAOLO;CARAPELLA, Giovanni;NIGRO, Angela;PACE, Sandro;
2015-01-01

Abstract

We study the instability of the superconducting state in a mesoscopic geometry for the low pinning material Mo3Ge 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 limitingmaximum velocity as a function of the appliedmagnetic 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 the Abrikosov lattice in a mesoscopic superconductor
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4651103
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