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Magneto-optical properties of GaAs-(Ga,Al)As superlattices

โœ Scribed by M. de Dios-Leyva; E.Z. da Silva; L.E. Oliveira

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
141 KB
Volume
16
Category
Article
ISSN
0749-6036

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โœฆ Synopsis

A theoretical calculation of the magnetoabsorption spectra of GaAs-(Ga,Al)As superlattices under in-plane magnetic fields is performed. We consider interband transitions between electron- and hole-magnetic levels within the parabolic effective-mass approximation and with the envelope wave functions obtained by an expansion in terms of sine functions. Due to the presence of the superlattice potential, interband transitions involving Landau levels (n) and (n) ' with (\Delta n \neq 0) may occur with significant contributions to the magneto-optical absorption spectra. The calculated magnetoabsorption spectra for varying in-plane magnetic fields are in quantitative agreement with experimental data.

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โœ A. Natori; M. Fujito ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 215 KB

The magneto-optical absorption spectrum of a \(D^{-}\)ion in a \(\mathrm{GaAs}_{-} \mathrm{Ga}_{0.75} \mathrm{Al}_{0.25} \mathrm{As}\) quantum well is calculated. We used the variational method based on a two orbital picture of a \(D^{-}\)ion, in which each single electron orbital is represented by