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Title: Nonlinear Evolution of Surface Morphology in InAs/AlAs Superlattices via Surface Diffusion

Abstract

Continuum simulations of self-organized lateral compositional modulation growth in InAs/AlAs short-period superlattices on InP substrate are presented. The results of the simulations correspond quantitatively to the results of synchrotron x-ray diffraction experiments. The time evolution of the compositional modulation during epitaxial growth can be explained only including a nonlinear dependence of the elastic energy of the growing epitaxial layer on its thickness. From the fit of the experimental data to the growth simulations we have determined the parameters of this nonlinear dependence. It was found that the modulation amplitude does not depend on the values of the surface diffusion constants of particular elements.

Authors:
 [1];  [2];  [3]
  1. Institute of Condensed Matter Physics, Masaryk University, Kotlarska 2, 61137 Brno (Czech Republic)
  2. Department of Electronic Structures, Charles University, Prague (Czech Republic)
  3. Department of Physics, University of Houston, Houston, Texas 77204-5005 (United States)
Publication Date:
OSTI Identifier:
20777135
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 96; Journal Issue: 13; Other Information: DOI: 10.1103/PhysRevLett.96.136102; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ARSENIDES; CRYSTAL GROWTH; DIFFUSION; EVOLUTION; EXPERIMENTAL DATA; INDIUM ARSENIDES; INDIUM PHOSPHIDES; LAYERS; MODULATION; MOLECULAR BEAM EPITAXY; MORPHOLOGY; NONLINEAR PROBLEMS; SEMICONDUCTOR MATERIALS; SIMULATION; SUBSTRATES; SUPERLATTICES; THICKNESS; X-RAY DIFFRACTION

Citation Formats

Caha, O., Holy, V., and Bassler, Kevin E. Nonlinear Evolution of Surface Morphology in InAs/AlAs Superlattices via Surface Diffusion. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.136102.
Caha, O., Holy, V., & Bassler, Kevin E. Nonlinear Evolution of Surface Morphology in InAs/AlAs Superlattices via Surface Diffusion. United States. doi:10.1103/PhysRevLett.96.136102.
Caha, O., Holy, V., and Bassler, Kevin E. Fri . "Nonlinear Evolution of Surface Morphology in InAs/AlAs Superlattices via Surface Diffusion". United States. doi:10.1103/PhysRevLett.96.136102.
@article{osti_20777135,
title = {Nonlinear Evolution of Surface Morphology in InAs/AlAs Superlattices via Surface Diffusion},
author = {Caha, O. and Holy, V. and Bassler, Kevin E.},
abstractNote = {Continuum simulations of self-organized lateral compositional modulation growth in InAs/AlAs short-period superlattices on InP substrate are presented. The results of the simulations correspond quantitatively to the results of synchrotron x-ray diffraction experiments. The time evolution of the compositional modulation during epitaxial growth can be explained only including a nonlinear dependence of the elastic energy of the growing epitaxial layer on its thickness. From the fit of the experimental data to the growth simulations we have determined the parameters of this nonlinear dependence. It was found that the modulation amplitude does not depend on the values of the surface diffusion constants of particular elements.},
doi = {10.1103/PhysRevLett.96.136102},
journal = {Physical Review Letters},
number = 13,
volume = 96,
place = {United States},
year = {Fri Apr 07 00:00:00 EDT 2006},
month = {Fri Apr 07 00:00:00 EDT 2006}
}