| Issue |
Europhys. Lett.
Volume 42, Number 1, April 1998
|
|
|---|---|---|
| Page(s) | 73 - 78 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00554-7 | |
| Published online | 01 September 2002 | |
Classical advection of guiding centers in a random magnetic field
1
Department of
Physics, Stanford University, Stanford, CA 94305-4060, USA
2
Materials Deparment, University of California at Santa
Barbara, Santa Barbara, CA 93106, USA
Received:
24
November
1997
Accepted:
19
February
1998
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.
PACS: 73.50.Jt – Galvanomagnetic and other magnetotransport effects (including thermomagnetic effects) / 73.40.Hm – Quantum Hall effect (integer and fractional) / 05.60.+w – Transport processes: theory
© EDP Sciences, 1998
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