Generalization of k.p theory for periodic perturbations

Details Generalization of k.p theory for periodic perturbations Generalization of k.p theory for periodic perturbations

2000-01-11

arxiv.org/abs/cond-mat/0001130v2

Phys. Rev. B 62, 1843 (2000)

Physics

Condensed Matter

minor changes, better typography (9 pages, 5 figures)

Scientific paper

10.1103/PhysRevB.62.1843

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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