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Vortex Plastic Motion in Twinned Superconductors

J. Groth·C. Reichhardt·C. J. Olson·Stuart Field·Franco Nori
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Abstract

We present simulations, without electrodynamical assumptions, of $B(x,y,H(t)), M(H(t))$, and $J_c(H(t))$, in hard superconductors, for a variety of twin-boundary pinning potential parameters, and for a range of values of the density and strength of the pinning sites. We numerically solve the overdamped equations of motion of up to 10^4 flux-gradient-driven vortices which can be temporarily trapped at $\sim 10^6$ pinning centers. These simulations relate macroscopic measurements (e.g., M(H), ``flame'' shaped $B(x,y)$ profiles) with the underlying microscopic pinning landscape and the plastic dynamics of individual vortices.

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J. Groth, C. Reichhardt, C. J. Olson, Stuart Field, Franco Nori. 1996-07-25. Vortex Plastic Motion in Twinned Superconductors. https://doi.org/10.1103/physrevlett.77.3625

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