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Finite-element calculation of the influence of interdiffusion on eigenstates in a GaAs/AlxGa1-xAs single-quantum-well structure

✍ Scribed by An Ping Zhao; S. R. Cvetkovic; Zuo Ya Yang

Publisher: Springer
Year: 1993
Tongue: English
Weight: 294 KB
Volume: 25
Category: Article
ISSN: 0306-8919
DOI: 10.1007/bf00430190

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✦ Synopsis

The influence of interdiffusion on eigenstates in an interdiffusion-induced GaAs/ AIxGal_xAs single-quantum-well structure is analysed numerically by the finite element method. In this approach, the confinement potential profile of the interdiffused quantum well structure is nonlinear and is modelled by an error function and, in particular, the nature of the effective mass of an electron is considered. The results show that the number of eigenstates and energy levels varies with the extent of the interdiffusion. Numerical results for the quasi-bound states in the quantum well structure with an applied electric field are also presented.

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