MAGNETOLUMINESCENCE STUDY OF N-TYPE MODULATION-DOPED ZNSE ZNXCD1-XSE QUANTUM-WELL STRUCTURES/

We have studied the band-edge photoluminescence from two n-type modula tion-doped ZnSe/ZnxCd1-xSe single quantum-well structures with electro n areal densities of 1.1 x 10(12) and 1.9 x 10(12) cm(-2) in magnetic fields up to 30 T. The sharp excitonic transitions observed in undoped samples are replaced by a broad luminescence band. In a magnetic fiel d, the luminescence spectra consist of distinct features associated wi th interband transitions between electrons occupying the conduction-ba nd Landau levels and photoexcited holes. The energies of these transit ions exhibit anomalies for even filling factors due to many-body effec ts.