Quantized dispersion of two-dimensional magnetoplasmons detected by photoconductivity spectroscopy.
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.
Holland
S
S
Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany.
Heyn
Ch
Ch
Heitmann
D
D
Batke
E
E
Hey
R
R
Friedland
K J
KJ
Hu
C-M
CM