Abstract
I address the question of the relation between potential fluctuations and optical properties in high mobility 2D electron gas under high magnetic fields. In view of recent results on the magnetisation of these systems, I first try to evaluate the density of localised states attached to Landau levels and show that it is significantly lower than usually assumed. It will then be demonstrated that they however play a major role in the relaxation mechanisms between Landau levels and between different electric subbands. Finally it will be shown that there are still some unexplained observations in the intensity and linewidths of the magneto-optical recombination of a 2D gas: their possible relation with the presence of disorder is discussed.
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Martinez, G. (2000). Magneto-Optical Properties and Potential Fluctuations in High Mobility 2D Electron Gas. In: Sadowski, M.L., Potemski, M., Grynberg, M. (eds) Optical Properties of Semiconductor Nanostructures. NATO Science Series, vol 81. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4158-1_4
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DOI: https://doi.org/10.1007/978-94-011-4158-1_4
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