title: Quantized dispersion of two-dimensional magnetoplasmons detected by photoconductivity spectroscopy.
abstract: We find that the long-wavelength magnetoplasmon, resistively detected by photoconductivity spectroscopy in high-mobility two-dimensional electron systems, deviates from its well-known semiclassical nature as uncovered in conventional absorption experiments. A clear filling-factor dependent plateau-type dispersion is observed that reveals a so far unknown relation between the magnetoplasmon and the quantum Hall effect.
authors.affiliation: Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Holland
authors.forename: Ch
authors.initials: Ch
authors.lastname: Heyn
authors.forename: D
authors.initials: D
authors.lastname: Heitmann
authors.forename: E
authors.initials: E
authors.lastname: Batke
authors.forename: R
authors.initials: R
authors.lastname: Hey
authors.forename: K J
authors.initials: KJ
authors.lastname: Friedland
authors.forename: C-M
authors.initials: CM
authors.lastname: Hu