Emergence of acoustic and optical bands in elastic systems

• DOI: 10.1121/1.4828822
• Publication Date: 2013-12-09T23:18:15Z
• Authors: A. Díaz-de-Anda; J. Flores; L. Gutiérrez; R. A. Méndez-Sánchez; G. Monsivais; A. Morales
• Keywords: Harmonic

Two elastic systems are considered in this work: A special linear chain of harmonic oscillators and a quasi one-dimensional vibrating rod. Starting both cases with locally periodic system formed by unit cells single element, these converted into binary cells. The acoustic optical bands then appear. For the rod experimental values compared theoretical results; particular, normal-mode amplitudes obtained agreement is excellent.