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Kinetics and localization of composite fermions in a random magnetic field

Polyakov, D. G. ; Evers, Ferdinand ; Mirlin, A. D. ; Wölfle, P.


We develop a theoretical description of the disordered composite-fermion (CF) metal, which shows that the Drude-like picture of the CF kinetics is only marginally valid at ν=1/2 and becomes totally inadequate at small (|ν−1/2|≪1) deviations from half-filling. We argue that the major effect of disorder is the quasiclassical localization of CFs in a random magnetic field (RMF) and discuss its ...


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