Generalized perturbation theory for atomic-scale superlattices

H. Yi; M. Razeghi

doi:10.1103/PhysRevB.56.3933

Generalized perturbation theory for atomic-scale superlattices

H. Yi, M. Razeghi

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We present a generalized (Formula presented) perturbation method that is applicable for atomic-scale superlattices. The present model is in good quantitative agreement with full band theories with local-density approximation, and approaches results of the conventional (Formula presented) perturbation method (i.e., Kane’s Hamiltonian) with the envelope function approximation for superlattices with large periods. The indirect band gap of AlAs/GaAs superlattices with short periods observed in experiments is explained using this method.

Original language	English (US)
Pages (from-to)	3933-3936
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	56
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.56.3933
State	Published - Jan 1 1997

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "We present a generalized (Formula presented) perturbation method that is applicable for atomic-scale superlattices. The present model is in good quantitative agreement with full band theories with local-density approximation, and approaches results of the conventional (Formula presented) perturbation method (i.e., Kane{\textquoteright}s Hamiltonian) with the envelope function approximation for superlattices with large periods. The indirect band gap of AlAs/GaAs superlattices with short periods observed in experiments is explained using this method.",

author = "H. Yi and M. Razeghi",

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AB - We present a generalized (Formula presented) perturbation method that is applicable for atomic-scale superlattices. The present model is in good quantitative agreement with full band theories with local-density approximation, and approaches results of the conventional (Formula presented) perturbation method (i.e., Kane’s Hamiltonian) with the envelope function approximation for superlattices with large periods. The indirect band gap of AlAs/GaAs superlattices with short periods observed in experiments is explained using this method.

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Generalized perturbation theory for atomic-scale superlattices

Abstract

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