Abstract
We study the superconducting state of a strip under an transport current Ja and an external magnetic field H. We show that the value of the critical currents at which the vortex–antivortex (V–Av) pair penetrates the sample, the number of phase-slip lines, and their average velocities and dynamics strongly depend on the size of the sample L. Our investigation was carried out by numerically solving the two-dimensional generalized time-dependent Ginzburg–Landau equations (GTDGL).
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