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Influence of elastic strain on the density of phonon states and characteristics of discrete breathers in the gap of the phonon spectrum of a crystal with a NaCl structure

✍ Scribed by S. V. Dmitriev; Yu. A. Baimova

Book ID
111449252
Publisher
Springer
Year
2011
Tongue
English
Weight
192 KB
Volume
56
Category
Article
ISSN
1063-7842

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Gap structures in the phonon spectrum of
Gap structures in the phonon spectrum of a linear chain with varying masses
✍ M.P. Soerensen; T. Schneider πŸ“‚ Article πŸ“… 1988 πŸ› Elsevier Science 🌐 English βš– 536 KB

The phonon spectrum of a one-dimensional lattice with masses varying incommensurately with the underlying lattice is studied by a discrete version of a multiple-scale perturbation theory. From the resonances in the higher order correction terms we determine the location of the gaps in the spectrum.