Far infrared measurements of bulk and surface phonons in GaAs/AlAs superlattices

Academic Article

Abstract

  • We have used far-infrared oblique-incidence reflection spectroscopy to study bulk phonon polaritons, and attenuated total reflection (ATR) spectroscopy to study surface phonon polaritons, in long-period GaAs/AlxGa1-xAs and short-period GaAs/AlAs superlattices. Results on the former are in good agreement with an effective-medium bulk-slab model of the dielectric tensor of the superlattice; results on the latter are analysed in terms of a model that contains dielectric-tensor contributions from the confined optic phonons. © 1990 Plenum Publishing Corporation.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Dumelow T; Hamilton AA; Parker TJ; Tilley DR; Foxon CTB; Hilton D; Moore KJ
  • Start Page

  • 901
  • End Page

  • 917
  • Volume

  • 11
  • Issue

  • 8