Simulations of Noise in Disordered Systems

Details Simulations of Noise in Disordered Systems Simulations of Noise in Disordered Systems

2003-04-16

arxiv.org/abs/cond-mat/0304353v1

Proceedings of SPIE 5112, 236 (2003)

Physics

Condensed Matter

Superconductivity

12 pages, 9 postscript figures, requires spie.cls. SPIE Conference on Fluctuations and Noise 2003, invited contribution

Scientific paper

10.1117/12.488597

We use particle dynamics simulations to probe the correlations between noise and dynamics in a variety of disordered systems, including superconducting vortices, 2D electron liquid crystals, colloids, domain walls, and granular media. The noise measurements offer an experimentally accessible link to the microscopic dynamics, such as plastic versus elastic flow during transport, and can provide a signature of dynamical reordering transitions in the system. We consider broad and narrow band noise in transport systems, as well as the fluctuations of dislocation density in a system near the melting transition.

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