Classical Advection of Guiding Centers in a Random Magnetic Field
L. Zielinski, K. Chaltikian, K. Birnbaum, C. M. Marcus, K. Campman, A. C. Gossard
Abstract
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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