Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/10589
Title: Charged particle transport in antidot lattices in the presence of magnetic and electric fields: Langevin approach
Author: Khoury Arvelo, María José
Lacasta Palacio, Ana María
Sancho, José M.
Romero, A. H.
Lindenberg, Katja
Keywords: Processos estocàstics
Moviment brownià
Fluctuacions (Física)
Fenòmens mesoscòpics (Física)
Partícules (Física nuclear)
Stochastic processes
Brownian movements
Fluctuations (Physics)
Mesoscopic phenomena (Physics)
Particles (Nuclear physics)
Issue Date: 2008
Publisher: The American Physical Society
Abstract: Magnetotransport experiments on antidot lattices show a rich variety of physical phenomena. Depending on the value of the particle mean-free path l in relation to the period λ of regular scatterers, two very different regimes can be distinguished: the strongly diffusive ( l ⪡ λ ) and the weakly diffusive ( l ≳ λ ) . We study particle transport in two-dimensional periodic landscapes based on a classical Langevin equation. The model covers both regimes and exhibits many of the features found experimentally at low magnetic fields. The most interesting observation is the presence of anomalous peaks in the magnetoresistance as a function of the magnetic field in the weakly diffusive regime. The roles of finite temperatures and of the electric field are also discussed.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.78.155433
It is part of: Physical Review B, 2008, vol. 78, núm. 15 p. 155433-1-155433-9
Related resource: http://dx.doi.org/10.1103/PhysRevB.78.155433
URI: http://hdl.handle.net/2445/10589
ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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