Faraday Rotation in Multiple Quantum Wells of GaAs/AlGaAs
E. Dudziak, J. Bożym, D. Pruchnik
Institute of Physics, Technical University of Wrocław, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

and Z.R. Wasilewski
Institute for Microstructural Sciences, National Research Council, K1AOR6 Ottawa, Canada
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We report on the results of first measurements of the Faraday rotation of modulated n-doped multiple quantum wells of GaAs/AlxGa1-xAs (x = 0.312). The measurements have been performed in the magnetic fields up to 13 T at the temperature of 2 K, in the spectral region of interband transitions. A rich structure of magneto-excitons has been found in the measured spectra. Faraday rotation (phase) measurements are proposed as an alternative method to photoluminescence excitation for investigations of magneto-excitons in quantum wells. The dependence of the measured Faraday rotation on magnetic field and hypothetical connections with quantum Hall effect are also discussed.
DOI: 10.12693/APhysPolA.90.1022
PACS numbers: 78.20.Ls, 73.20.Dx, 78.66.Fd