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• W4310415660 abstract "We study the disorder-induced deterministic dispersion of particles uniformly driven in an array of narrow tracks. For different toy models with quenched disorder we obtain exact analytical expressions for the steady-state mean velocity $v$ and the dispersion constant $D$ for any driving force $f$ above the depinning threshold. For short-range correlated pinning forces we find that at large drives $Densuremath{sim}1/v$ for random-field type of disorder while $Densuremath{sim}1/{v}^{3}$ for the random-bond type. We show numerically that these results are robust: the same scaling holds for models of massive damped particles, soft particles, particles in quasi-one-dimensional or two-dimensional tracks, and for a model of a magnetic domain wall with two degrees of freedom driven either by electrical current or magnetic field. Crossover and finite-temperature effects are discussed. The universal features we identify may be relevant for describing the fluctuating dynamics of stable localized objects such as solitons, superconducting vortices, magnetic domain walls and skyrmions, and colloids driven in quasi-one-dimensional track arrays. In particular, the drive dependence of $D$ appears as a sensitive tool for characterizing and assessing the nature of disorder in the host materials." @default.
• W4310415660 created "2022-12-10" @default.
• W4310415660 creator A5047095111 @default.
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• W4310415660 date "2022-11-30" @default.
• W4310415660 modified "2023-10-09" @default.
• W4310415660 title "Driven particle dispersion in narrow disordered racetracks" @default.
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• W4310415660 doi "https://doi.org/10.1103/physrevb.106.184211" @default.
• W4310415660 hasPublicationYear "2022" @default.
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