Phonon-emission-accompanied photoluminescence from a two-dimensional electron system at high magnetic field

Falko, Vladimir (1993) Phonon-emission-accompanied photoluminescence from a two-dimensional electron system at high magnetic field. Physical review B, 47 (7). pp. 3802-3805. ISSN 0163-1829

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Abstract

The magnetic freeze-out of two-dimensional electrons (the formation of a Wigner crystal or disordered dielectric state) is shown to stimulate acoustical- and optical-phonon emissions in the course of their radiative recombination with an acceptor-bound hole. This allows us to expect an appearance of the corresponding phonon replicas in the spectra taken at the long time-delayed tail of the time-resolved magnetoluminescence in low-density GaAs-AlxGa1-xAs heterostructures in extreme magnetic fields.