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Simulation studies for the vortex depinning dynamics around a columnar defect in superconductors

Nakai, Noriyuki; Hayashi, Nobuhiko; Machida, Masahiko  

Using the time-dependent Ginzburg-Landau equation with the complex relaxation rate and Maxwell equation, we perform the numerical simulation of vortex-pinning dynamics in two cases of metal-pinning and insulator-pinning. At the same time, the vortex-flow voltage induced by the vortex-motion and the Hall coefficient are calculated. Numerical simulations reveal that the trapped vortex at the pinning-site disrupts the vortex-motion of non-trapped vortices and the Hall coefficient depends on that vortex-motion.

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Category:Physics, Applied

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