This article is cited in 7 papers

Low dimensional systems

Anisotropy of phonon-plasmon modes in GaAs/AlAs(311) superlattices

V. A. Volodin<sup>ab

a</sup> Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
^b Novosibirsk State University

Abstract: Doped GaAs/AlAs superlattices grown on the (311)$A$ and (311)$B$ surfaces have been studied using Raman spectroscopy. Phonon and phonon-plasmon modes with different directions of the wave vectors in the superlattice plane (i.e., the modes propagating in different lateral directions) have been observed in back-scattering from the superlattice face with the use of a Raman scattering accessory. Lateral anisotropy of mixed phonon-plasmon modes associated with structural anisotropy of the superlattice grown on the faceted (311)$A$ surface has been experimentally revealed for the first time.

Received: 24.05.2010

 English version: Physics of the Solid State, 2011, 53:2, 404–406

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