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Updated: Aug 2, 2026

Scanning SQUID Study of Vortex Manipulation by Local Contact
Published on: February 1, 2017
Chaotic dynamics of superconductor vortices in the plastic phase
1LEMA, UMR 6157, Université François Rabelais-CNRS-CEA, Parc de Grandmont, 37200 Tours, France.
Abstract:
We present numerical simulation results of driven vortex lattices in the presence of random disorder at zero temperature. We show that the plastic dynamics is readily understood in the framework of chaos theory. Intermittency "routes to chaos" have been clearly identified, and positive Lyapunov exponents and broadband noise, both characteristic of chaos, are found to coincide with the differential resistance peak. Furthermore, the fractal dimension of the strange attractor reveals that the chaotic dynamics of vortices is low dimensional.
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