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Magnetotransport and Cyclotron Resonance Investigations of the 2D-Electron Gas in e-Beam Irradiated AlGaAs/GaAs Heterojunctions

URN to cite this document:
Sigg, H. ; Weiss, Dieter ; Klitzing, Klaus von
Date of publication of this fulltext: 05 Aug 2009 13:57


A 2D electron gas (2DEG) with a controlled density of repulsive scatters at the interface is obtained by irradiation of AlGaAs/GaAs heterojunctions with 1 MeV electrons. Measurements of the magnetotransport yield that the plateaus in the Hall resistance are at their quantized values Rxy = h/e2v (v is the integer filling factor) but show a significant broadening. The lineposition of the ...


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