Thomas H. Baum, Carl E. Larson, et al.
Journal of Organometallic Chemistry
We report an experimental observation of impurity-induced conductance dips in quantized channels as predicted by previous theoretical studies. Our experiments use quantum point contacts on a two-dimensional electron gas in a modulation-doped GaAs/AlxGa1-xAs heterostructure. The electron gas has a sheet density of 1.2×1011 cm-2 and a mobility of 4.6×105 cm2/Vs measured at 50 mK. Our data, which are qualitatively very similar to those calculated with use of a two-dimensional Anderson model, strongly suggest that we are observing both the erosion of conductance quantization, and localization in the presence of an impurity-induced random potential. © 1990 The American Physical Society.
Thomas H. Baum, Carl E. Larson, et al.
Journal of Organometallic Chemistry
Surendra B. Anantharaman, Joachim Kohlbrecher, et al.
MRS Fall Meeting 2020
Kigook Song, Robert D. Miller, et al.
Macromolecules
T.N. Morgan
Semiconductor Science and Technology