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Quasiclassical Negative Magnetoresistance of a 2D Electron Gas: Interplay of Strong Scatterers and Smooth Disorder

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Mirlin, A. D. ; Polyakov, D. G. ; Evers, Ferdinand ; Wölfle, P.
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Date of publication of this fulltext: 05 Jul 2021 06:57


We study the quasiclassical magnetotransport of noninteracting fermions in two dimensions moving in a random array of strong scatterers (antidots, impurities, or defects) on the background of a smooth random potential. We demonstrate that the combination of the two types of disorder induces a novel mechanism leading to a strong negative magnetoresistance, followed by the saturation of the ...


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