Parabolic quantum wells of AlGaAs: bandstructure calculations

In this paper, by using the envelope function method (EFM) coupled to the transfer matrix technique, we report the calculations of both the conduction and the valence subbands of parabolic quantum wells (PQW) of AlGaAs. We note that the conduction subbands are equidistant for all the values of k. We...

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Bibliographic Details
Published in:Infrared physics & technology 1996-06, Vol.37 (4), p.489-498
Main Authors: Sekkal, N., Abbar, B., Tekia, F., Amrane, N., Aourag, H.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Exact sciences and technology
Physics
Surface and interface electron states
Surface states, band structure, electron density of states
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Summary:In this paper, by using the envelope function method (EFM) coupled to the transfer matrix technique, we report the calculations of both the conduction and the valence subbands of parabolic quantum wells (PQW) of AlGaAs. We note that the conduction subbands are equidistant for all the values of k. We also observe that the valence subbands for PQW show a lower mixing compared to the square quantum wells (SQW) and are less influenced by a longitudinal electric field.
ISSN:1350-4495
1879-0275
DOI:10.1016/1350-4495(95)00083-6