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Title: | Dynamics of a paramagnetic colloidal particle driven on a magnetic-bubble lattice |
Author: | Soba, A. Tierno, Pietro Fischer, Thomas M. Sagués i Mestre, Francesc |
Keywords: | Química física Microelectrònica Aparells electrònics Dispositius magnètics Física estadística Sistemes no lineals Physical chemistry Microelectronics Electronic apparatus and appliances Magnetic devices Statistical physics Thermodynamics Nonlinear systems |
Issue Date: | 2008 |
Publisher: | The American Physical Society |
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. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.77.060401 |
It is part of: | Physical Review E, 2008, vol. 77, núm. 6, p. 060401(R)-1-060401(R)-4 |
URI: | http://hdl.handle.net/2445/18924 |
Related resource: | http://dx.doi.org/10.1103/PhysRevE.77.060401 |
ISSN: | 1063-651X |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) |
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