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

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 (Γ13 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 languageEnglish
Pages (from-to)129-138
Number of pages10
JournalPhysics of the Solid State
Volume48
Issue number1
DOIs
Publication statusPublished - Jan 2006
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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