Volume 43, Number 3, August I 1998
|Page(s)||337 - 342|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Direct evidence for oscillatory screening in the quantum Hall effect regime
Groupe d'Etude des Semiconducteurs, UMR CNRS-Université Montpellier II, 34095, Montpellier, France
2 Institute of Physics, Wroclaw Technical University - 50-370 Wroclaw, Poland
3 Institute of Physics, Polish Academy of Sciences - 02668 Warsaw, Poland
4 Laboratoire de Microstructure et de Microélectronique, CNRS - 98220 Bagneux, France
Accepted: 8 June 1998
Oscillations of magneto-donor binding energies are observed in photoluminescence spectra of modulation-doped heterostructure. Both the experiment and the underlying theory provide direct evidence for an oscillatory screening of the Coulomb interaction by two-dimensional electron gas in the quantum Hall effect regime.
PACS: 73.20.Hb – Impurity and defect levels; energy states of adsorbed species / 73.40.Hm – Quantum Hall effect (integer and fractional) / 78.55.-m – Photoluminescence
© EDP Sciences, 1998
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