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Density of States of GaAs-AlGaAs Heterostructures Deduced from Temperature Dependend Magnetocapacitance Measurements

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Mosser, V. ; Weiss, Dieter ; Klitzing, Klaus von ; Ploog, K. ; Weimann, G.
Date of publication of this fulltext: 05 Aug 2009 13:57


Abstract We have analyzed the density of states of a two dimensional electron gas in a GaAs- AlGaAs hetereostructure by measuring the magnetocapacitance in magnetic fields up to 6 Tesla at temperatures below 10 K. The experimental data are well described by a Gaussian-like density of states where the linewidth à is proportional to B.

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