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2008

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/18924

Dynamics of a paramagnetic colloidal particle driven on a magnetic-bubble lattice

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http://dx.doi.org/10.1103/PhysRevE.77.060401

Abstract

We present a theoretical study of the recently observed dynamical regimes of paramagnetic colloidal particles externally driven above a regular lattice of magnetic bubbles [P. Tierno, T. H. Johansen, and T. M. Fischer, Phys. Rev. Lett. 99, 038303 (2007)]. An external precessing magnetic field alters the potential generated by the surface of the film in such a way to either drive the particle circularly around one bubble, ballistically through the array, or in triangular orbits on the interstitial regions between the bubbles. In the ballistic regime, we observe different trajectories performed by the particles phase locked with the external driving. Superdiffusive motion, which was experimentally found bridging the localized and delocalized dynamics, emerge only by introducing a certain degree of randomness into the bubbles size distribution.

Subject

Química física, Microelectrònica, Aparells electrònics, Dispositius magnètics, Física estadística, Sistemes no lineals

Subject (English)

Physical chemistry, Microelectronics, Electronic apparatus and appliances, Magnetic devices, Statistical physics, Thermodynamics, Nonlinear systems

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Articles publicats en revistes (Ciència dels Materials i Química Física)

Citation

SOBA, A., et al. Dynamics of a paramagnetic colloidal particle driven on a magnetic-bubble lattice. Physical Review E. 2008. Vol. 77, num. 6, pags. 060401(R)-1-060401(R)-4. ISSN 1063-651X. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/18924

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