Raman scattering by optical phonons in hl 1 _ y _ zJ . UyGazAs lattice matched
نویسنده
چکیده
We report on Raman scattering by longitudinal optical phonons in In; _ y z AIy Guz As (1 y z = 0.53) lattice matched to InP. The quaternary alloys were grown on (001) InP by molecular beam epitaxy. The phonon spectra exhibit three-mode behavior. The frequencies of AIAsand GaAs-Iike modes vary linearly with the concentration of AI (or Ga) while the position of the InAs-Hke phonon remains nearly constant. The data show no evidence of alloy clustering.
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تاریخ انتشار 2001