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Intervalley electron scattering by phonons in (AlAs)1(GaAs)3(001) superlattices

  • Low-Dimensional Systems and Surface Physics
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Abstract

Intervalley electron scattering by phonons in (AlAs)1(GaAs)3(001) superlattices is studied using the pseudopotential method and a phenomenological model of the bonding forces. The deformation potentials between the conduction band extrema of the superlattice involving short-and long-wavelength phonons are calculated. It is shown that the mixing of states from the zinc-blende L valleys plays a greater role in intervalley scattering in a superlattice than the Γ-X mixing. In particular, due to L-L mixing, the Γ-X 3 transitions, analogous to Γ-L transitions in zinc blende, have higher intensities than the analogues of Γ-X transitions (Γ1-M 5 and (Γ1-Γ3 transitions). The deformation potentials averaged over the scattering channels in the superlattice agree with the corresponding potentials in a solid solution, but all transitions in the superlattice have higher intensities for the lower states.

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Authors and Affiliations

  1. Kuznetsov Siberian Physicotechnical Institute, Tomsk State University, pl. Revolyutsii 1, Tomsk, 634050, Russia

    L. N. Nikitina & S. N. Grinyaev

  2. Tomsk State Pedagogical University, Tomsk, 634041, Russia

    V. G. Tyuterev

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  1. L. N. Nikitina
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  2. S. N. Grinyaev
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  3. V. G. Tyuterev
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Nikitina, L.N., Grinyaev, S.N. & Tyuterev, V.G. Intervalley electron scattering by phonons in (AlAs)1(GaAs)3(001) superlattices. Phys. Solid State 48, 129–138 (2006). https://doi.org/10.1134/S1063783406010252

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  • DOI: https://doi.org/10.1134/S1063783406010252

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