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Title: Angular dependence of Raman scattering selection rules for long-wavelength optical phonons in short-period GaAs/AlAs superlattices

Abstract

The angular dependence of Raman scattering selection rules for optical phonons in short-period (001) GaAs/AlAs superlattices is calculated and experimentally studied. Experiments are performed using a micro-Raman setup, in the scattering geometry with the wavevectors of the incident and scattered light lying in the plane of superlattices (so-called in-plane geometry). Phonon frequencies are calculated using the Born model taking the Coulomb interaction into account in the rigid-ion approximation. Raman scattering spectra are calculated in the framework of the deformation potential and electro-optical mechanisms. Calculations show an angular dependence of the selection rules for optical phonons with different directions of the wavevectors. Drastic differences in the selection rules are found for experimental and calculated spectra. Presumably, these differences are due to the Fröhlich mechanism in Raman scattering for short-period superlattices.

Authors:
 [1];  [2]
  1. Russian Academy of Sciences, Omsk Scientific Center, Siberian Branch (Russian Federation)
  2. Russian Academy of Sciences, Rzhanov Institute of Semiconductor Physics, Siberian Branch (Russian Federation)
Publication Date:
OSTI Identifier:
22617219
Resource Type:
Journal Article
Journal Name:
Journal of Experimental and Theoretical Physics
Additional Journal Information:
Journal Volume: 123; Journal Issue: 1; Other Information: Copyright (c) 2016 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7761
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM ARSENIDES; APPROXIMATIONS; DEFORMATION; GALLIUM ARSENIDES; INTERACTIONS; IONS; PHONONS; RAMAN EFFECT; SCATTERING; SELECTION RULES; SPECTRA; SUPERLATTICES; VISIBLE RADIATION; WAVELENGTHS

Citation Formats

Volodin, V. A., E-mail: volodin@isp.nsc.ru, Sachkov, V. A., and Sinyukov, M. P. Angular dependence of Raman scattering selection rules for long-wavelength optical phonons in short-period GaAs/AlAs superlattices. United States: N. p., 2016. Web. doi:10.1134/S1063776116070256.
Volodin, V. A., E-mail: volodin@isp.nsc.ru, Sachkov, V. A., & Sinyukov, M. P. Angular dependence of Raman scattering selection rules for long-wavelength optical phonons in short-period GaAs/AlAs superlattices. United States. https://doi.org/10.1134/S1063776116070256
Volodin, V. A., E-mail: volodin@isp.nsc.ru, Sachkov, V. A., and Sinyukov, M. P. 2016. "Angular dependence of Raman scattering selection rules for long-wavelength optical phonons in short-period GaAs/AlAs superlattices". United States. https://doi.org/10.1134/S1063776116070256.
@article{osti_22617219,
title = {Angular dependence of Raman scattering selection rules for long-wavelength optical phonons in short-period GaAs/AlAs superlattices},
author = {Volodin, V. A., E-mail: volodin@isp.nsc.ru and Sachkov, V. A. and Sinyukov, M. P.},
abstractNote = {The angular dependence of Raman scattering selection rules for optical phonons in short-period (001) GaAs/AlAs superlattices is calculated and experimentally studied. Experiments are performed using a micro-Raman setup, in the scattering geometry with the wavevectors of the incident and scattered light lying in the plane of superlattices (so-called in-plane geometry). Phonon frequencies are calculated using the Born model taking the Coulomb interaction into account in the rigid-ion approximation. Raman scattering spectra are calculated in the framework of the deformation potential and electro-optical mechanisms. Calculations show an angular dependence of the selection rules for optical phonons with different directions of the wavevectors. Drastic differences in the selection rules are found for experimental and calculated spectra. Presumably, these differences are due to the Fröhlich mechanism in Raman scattering for short-period superlattices.},
doi = {10.1134/S1063776116070256},
url = {https://www.osti.gov/biblio/22617219}, journal = {Journal of Experimental and Theoretical Physics},
issn = {1063-7761},
number = 1,
volume = 123,
place = {United States},
year = {Fri Jul 15 00:00:00 EDT 2016},
month = {Fri Jul 15 00:00:00 EDT 2016}
}