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

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

ASJC Scopus subject areas

Condensed Matter Physics
Electronic, Optical and Magnetic Materials

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10.1134/S1063783406010252

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@article{116c5a2dcd884c3c96ab3853363ee403,

title = "Intervalley electron scattering by phonons in (AlAs)1(GaAs) 3(001) superlattices",

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.}",

year = "2006",

month = jan,

doi = "10.1134/S1063783406010252",

language = "English",

volume = "48",

pages = "129--138",

journal = "Physics of the Solid State",

issn = "1063-7834",

publisher = "Maik Nauka-Interperiodica Publishing",

number = "1",

}

TY - JOUR

T1 - Intervalley electron scattering by phonons in (AlAs)1(GaAs) 3(001) superlattices

AU - Nikitina, L. N.

AU - Grinyaev, S. N.

AU - Tyuterev, V. G.

PY - 2006/1

Y1 - 2006/1

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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