Observation of Folded Acoustic Phonons in a Semiconductor Superlattice

C. Colvard; R. Merlin; M. V. Klein; A. C. Gossard

doi:10.1103/PhysRevLett.45.298

Observation of Folded Acoustic Phonons in a Semiconductor Superlattice

C. Colvard, R. Merlin, M. V. Klein, and A. C. Gossard

Phys. Rev. Lett. 45, 298 – Published 28 July 1980

Abstract

Raman scattering from folded longitudinal phonons in a GaAs-AlAs superlattice is observed, and the resonant behavior for laser frequencies near the gap of this sample is studied. A quantitative explanation of the data is given in terms of a simple theory which involves the Kronig-Penney model for the electrons and considers the phonons in the elastic continuum limit.

Received 9 May 1980

DOI:https://doi.org/10.1103/PhysRevLett.45.298

Authors & Affiliations

C. Colvard^*, R. Merlin^†, and M. V. Klein^*,†

Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801

A. C. Gossard

Bell Laboratories, Murray Hill, New Jersey 07974

^*Also at Department of Physics, University of Illinois at Urbana-Champaign.
^†Also at Coordinated Science Laboratory, University of Illinois at Urbana-Champaign.