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Generalization of k.p theory for periodic perturbations

R. Stubner·R. Winkler·O. Pankratov
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Abstract

We extend standard k.p theory to take into account periodic perturbations which are rapidly oscillating with a wavelength of a few lattice constants. Our general formalism allows us to explicitly consider the Bragg reflections due to the perturbation-induced periodicity. As an example we calculate the effective masses in the lowest two conduction bands of spontaneously ordered GaInP_2 as a function of the degree of ordering. Comparison of our results for the lowest conduction band to available experimental data and to first principle calculations shows good agreement.

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R. Stubner, R. Winkler, O. Pankratov. 2000-07-21. Generalization of k.p theory for periodic perturbations. https://doi.org/10.1103/physrevb.62.1843

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