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VOLUME 60 (1994) | ISSUE 2 | PAGE 89
Fine structure in the photoluminescence line of a quasi-2D electron Landau level: Initial or final state origin?
Magnetophotoluminescence spectra of modulation-doped AlGaAs/InGaAs/GaAs asymmetric single quantum wells with a partially occupied second quantum-well electron subband exhibit a pronounced fine structure in a recombination line of electrons from the completely occupied zeroth Landau level of the first subband with photoexcited holes. The test experiment has shown that this structure originates from different initial states in the electron-hole recombination transition.