Accession Number:

ADA214704

Title:

Electronic Properties of GaAs-(Al,Ga)As Quasiperiodic Heterostructures

Descriptive Note:

Final rept. 1 Jun 1986-31 Aug 1989

Corporate Author:

MICHIGAN UNIV ANN ARBOR DEPT OF PHYSICS

Personal Author(s):

Report Date:

1989-10-27

Pagination or Media Count:

5.0

Abstract:

We have studied random, Fibonacci and Thue-Morse Gallium Arsenide- based superlattices using Raman scattering and other optical techniques. The non-resonant Raman data provides information on Fourier components of the modulation while resonant results reveal dips associated with gaps in the phonon spectrum. The latter have been explained in terms of a model showing that phonons with wavevector close to the zone edge and zone centers avoid the surface. Keywords Heterostructures, Quasiperiodic structures, Optical properties, Acoustic phonons.

Subject Categories:

  • Crystallography
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE