%0 Conference Proceedings %T 2DEG spectroscopy with resonant tunneling through single impurity state %+ Institute of Experimental Physics [Warsaw] (IFD) %+ Groupe d'étude des semiconducteurs (GES) %A Gryglas, Marta %A Baj, M. %A Jouault, Benoit %A Raymond, Andre %A Chaubet, Christophe %A Chenaud, Boris %A Robert, Jean-Louis %A Faini, G. %< avec comité de lecture %Z GES:03-024 %( International Journal of Nanoscience, Vol 2, No 6 %( International Journal of Nanoscience, Vol 2, No 6 %B 11th International Symposium on Nanostructures - Physics and Technology %C St Petersburg (RUSSIA), France %I WORLD SCIENTIFIC PUBL CO INC, 687 HARTWELL ST, TEANECK, NJ 07666 USA %V 2 %P 585-592 %8 2003-06-23 %D 2003 %K tunneling %K impurity %K 2DEG %Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Conference papers %X We have used silicon impurities in an aluminum arsenide barrier to probe an adjacent two-dimensional electron gas (2DEG). A single impurity acts as a local spectrometer and scans the local density of states of the 2DEG. Magnetotransport experiments have been performed at low temperature with a magnetic field B applied along the direction of the current. Current-voltage characteristics strongly depend on B and reveal the formation of Landau levels (LLs). %G English %L hal-00545080 %U https://hal.science/hal-00545080 %~ CNRS %~ UNIV-MONTP2 %~ GES %~ UNIV-MONTPELLIER %~ UM1-UM2