Modeling of the surface states of a terminated superlattice using a multiband Hamiltonian

Andalib Ahmed Chowdhury; Christine M. Maziar

doi:10.1117/12.137599

3 September 1992 Modeling of the surface states of a terminated superlattice using a multiband Hamiltonian

Andalib Ahmed Chowdhury, Christine M. Maziar

Proceedings Volume 1675, Quantum Well and Superlattice Physics IV; (1992) https://doi.org/10.1117/12.137599
Event: Semiconductors '92, 1992, Somerset, NJ, United States

Abstract

In most electronic bandstructure calculations of semiconductor superlattices (SLs), periodically extended boundary conditions are used. However the presence of a terminating layer, which breaks the periodicity of the SL, is expected to modify the electronic bandstructure. In this work, we report a model for calculating the localized surface-like states of a terminated SL which includes, for the first time, the nonparabolic nature of the host bandstructures by way of band mixing, unlike the simple one band Kronig-Penney type model. This model is within the framework of the multiband envelope function approximation, which has proven to be a useful and efficient method for the calculation of SL electronic bandstructure.

Citation Download Citation

Andalib Ahmed Chowdhury and Christine M. Maziar "Modeling of the surface states of a terminated superlattice using a multiband Hamiltonian", Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); https://doi.org/10.1117/12.137599

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