Abstract
The time-dependent Ginzburg–Landau equations have been solved numerically by a finite element analysis for the nanosized superconducting strips with one central weak link. Anisotropy is included through the spatially dependent anisotropy coefficient ζ in different layers of the sample. For given applied magnetic fields, we have simulated the dynamical behavior of the penetrating magnetic vortices into the superconductor. Our results show the energy barrier for vortices to enter a weak link is smaller than that for vortices to enter superconducting layers. The final distribution of vortices is determined by the competing interactions of vortices with Meissner currents and the weak link boundaries.
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