The effect of the magnetic field B on the Fermi-edge singularity in optical properties of asymmetric quantum wells is investigated using a two-subband Mahan--Nozrigaeres--De Dominicis Hamiltonian. The emission spectrum for carriers in the lowest subband is strongly enhanced by excitonic transitions involving higher subbands. The modulation of the emission spectrum is almost periodic in 1/B.
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Paweł Hawrylak (1991) studied this question.
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