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Strong Magnetoresistance Induced by Long-Range Disorder

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Mirlin, A. D. ; Wilke, J. ; Evers, Ferdinand ; Polyakov, D. G. ; Wölfle, P.
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Date of publication of this fulltext: 05 Jul 2021 06:10


We calculate the semiclassical magnetoresistivity ρxx(B) of noninteracting fermions in two dimensions moving in a weak and smoothly varying random potential or random magnetic field. We demonstrate that in a broad range of magnetic fields the non-Markovian character of the transport leads to a strong positive magnetoresistance. The effect is especially pronounced in the case of a random magnetic field where ρxx(B) becomes parametrically much larger than its B=0 value.

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