Classical Advection of Guiding Centers in a Random Magnetic Field

Details Classical Advection of Guiding Centers in a Random Magnetic Field Classical Advection of Guiding Centers in a Random Magnetic Field

1997-04-07

arxiv.org/abs/cond-mat/9704058v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 4 eps figures; Revised. To appear in Europhysics Letters

Scientific paper

10.1209/epl/i1998-00554-7

We investigate theoretically and experimentally classical advective transport in a 2D electron gas in a random magnetic field. For uniform external perpendicular magnetic fields large compared to the random field we observe a strong enhancement of conductance compared to the ordinary Drude value. This can be understood as resulting from advection of cyclotron guiding centers. For low disorder this enhancement shows non-trivial scaling as a function of scattering time, with consistency between theory and experiment.

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