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Raman spectroscopy of acoustic phonons in periodic and Fibonacci superlattices |
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| Authors: | MWC Dharma-wardana AH MacDonald GC Aers DJ Lockwood WT Moore RLS Devine |
| Abstract: | Results of Raman scattering experiments on (a) periodic superlattices made up of GaAs/InxGa1−xAs layers with high indium concentrations, (b) GaAs/Ga1−xAlxAs Fibonacci superlattices, are presented. We discuss the observed peak positions and intensities using the continuum theory of acoustic wave propagation in layered media and the photo-elastic coupling model. |
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