%0 Conference Proceedings %T Resonant tunnelling through single donor states in GaAs/AlAs/GaAs devices %+ Groupe d'étude des semiconducteurs (GES) %A Gryglas, M. %A Baj, M. %A Jouault, Benoit %A Faini, G. %A Cavanna, A. %< avec comité de lecture %Z GES:03-021 %( PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES %( PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES %B International Conference on Superlattices Nano-Structures and Nano-Devices (ICSNN-02) %C TOULOUSE (FRANCE), France %V 17 %P 303-304 %8 2002-07-22 %D 2002 %K resonant tunnelling %K X-minimum-related donor %K single impurity %Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Conference papers %X Our paper is a first step towards tunnelling spectroscopy of individual X-minimum-related shallow donors. We investigated I-V characteristics of submicrometer mesa structures made on GaAs/AlAs/GaAs wafers delta-doped with silicon in the middle of AlAs layer. At 4.2 K and magnetic field up to 6 T we resolved well-separated peaks attributed to resonant tunnelling via individual donors. (C) 2002 Elsevier Science B.V. All rights reserved. %G English %L hal-00544455 %U https://hal.science/hal-00544455 %~ CNRS %~ UNIV-MONTP2 %~ GES %~ UNIV-MONTPELLIER %~ UM1-UM2