Theoretical investigation of the lattice dynamics of GaAlSb superlattices

Steininger, Bernhard and Pavone, Pasquale and Strauch, Dieter (2001) Theoretical investigation of the lattice dynamics of GaAlSb superlattices. COMPUTATIONAL MATERIALS SCIENCE, 20 (3-4). pp. 376-380. ISSN 0927-0256

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Abstract

We investigate from first principles the effect of substitutional disorder on the off-resonance Raman activity of GaSb/AlSb superlattices (SLs) including strain and mixing effects. The method we use is based on a perturbation scheme which allows to take into account both the actual chemical configuration and local displacements from a given reference (virtual) system. We calculate the first-order Raman spectra of different (GaSb)(n)(AlSb)(n) superlattices grow:n in the [0 0 1] direction. The investigation of the effects of the interface modes on the Raman spectra allows the correct interpretation of the features found in the experiment. (C) 2001 Elsevier Science B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: ABINITIO;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Dieter Strauch
Depositing User: Dr. Gernot Deinzer
Date Deposited: 14 Feb 2022 06:42
Last Modified: 14 Feb 2022 06:42
URI: https://pred.uni-regensburg.de/id/eprint/41686

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