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

L. N. Nikitina, S. N. Grinyaev, V. G. Tyuterev

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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.

Original language	English
Pages (from-to)	129-138
Number of pages	10
Journal	Physics of the Solid State
Volume	48
Issue number	1
DOIs	https://doi.org/10.1134/S1063783406010252
Publication status	Published - Jan 2006
Externally published	Yes

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ASJC Scopus subject areas

Condensed Matter Physics
Electronic, Optical and Magnetic Materials

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

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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.",

author = "Nikitina, {L. N.} and Grinyaev, {S. N.} and Tyuterev, {V. G.}",

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N2 - 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.

AB - 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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10.1134/S1063783406010252