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Mesoscopic transport properties of composite fermions
Sachrajda, A S; Feng, Y; Carmona, H A; Geim, A K; Main, P C; Eaves, L; Foxon, C T
Surface Science. 1996;362(1-3):59-62.
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Abstract
We have measured the magnetoresistance of quantum wires, junctions and rings near landau filling factor nu=1/2 to search for effects due to composite fermions (CF). We find evidence for semi-classical ballistic effects in the CF which are similar to those seen near zero magnetic field. However, we were not able to observe effects due to the phase coherence of the CF, even where their analogues were apparent in the electron transport. We attribute this to sample inhomogeneity.
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electrical transport measurements; gallium arsenide; heterojunctions; many body and quasi-particle theories; semiconductor-semiconductor heterostructures
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