Year: 1988
Type: article
Abstract: High-field Shubnikov-de Haas measurements have been performed on a planar-doped GaAs sample which shows high persistent photoconductivity. At 4.2 K and without illumination a quantum Hall plateau appears. This is the first observation of the quantum Hall effect on a low-mobility structure in which the electrons are confined on their parent donors. After illumination the plateau shifts to higher magnetic fields. At 1.4 K the plateau returns to lower magnetic field and the magnetoresistance falls to zero. No additional plateaus were observed even on lowering the temperature to 50 mK.
Authors: G Gillmann, P Bois, E Barbier, B Vinter, D Lavielle, M Stohr, S Najda, A Briggs, J C Portal
Institution: Technicolor (France)
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2005363445