Two- and three-dimensional magnetoluminescence measurements in a GaAs/AlGaAs multiple quantum well

Johnson, G. R.; Cavenett, B. C.; Kana’ah, A.; Pakulis, E. J.; Wang, W. I.
May 1987
Applied Physics Letters;5/25/1987, Vol. 50 Issue 21, p1512
Academic Journal
We report a direct means of distinguishing between the two-dimensional and three-dimensional nature of luminescence bands in multilayered structures. Fixed energy interband excitation of a GaAs/AlGaAs multiple quantum well structure reveals oscillations of the luminescence intensity in a varying magnetic field resulting from resonant excitations between the electron and hole Landau levels. An angular dependence of the position of these Shubnikov–de Haas type oscillations shows directly the two-dimensional nature of the origin of a luminescence band.


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