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|Type:||Artigo de periódico|
|Title:||Donor-related Magneto-optical Absorption Spectra Of Gaas-(ga, Al)as Quantum Wells|
De Dios-Leyva M.
|Abstract:||The effects of applied magnetic fields on the optical absorption spectra associated with transitions from the Landau valence magnetic levels to shallow donor states in GaAs-(Ga, Al)As quantum wells are studied for magnetic fields applied perpendicular to the heterostructure interfaces. The donor-related magneto-absorption spectra are calculated within the effective-mass approximation, and with a minimization procedure for evaluating donor energies and envelope wave functions. We consider a homogeneous donor distribution in the well and analyse the theoretical impurity-related magneto-absorption spectra for various quantum well widths and applied magnetic fields. The magneto-absorption lineshapes present features clearly associated with transitions involving donor states and different valence Landau magnetic levels.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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