Chaotic dynamics of superconductor vortices in the plastic phase

Details Chaotic dynamics of superconductor vortices in the plastic phase Chaotic dynamics of superconductor vortices in the plastic phase

2005-06-23

arxiv.org/abs/cond-mat/0506607v2

Physics

Condensed Matter

Superconductivity

5 pages, 3 figures Accepted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.96.027002

We present numerical simulation results of driven vortex lattices in 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 broad-band 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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