Localized vibrations in perfect anharmonic lattices: Trapping on phonons |
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| Authors: | V. Hizhnyakov A. Shelkan M. Klopov A.J. Sievers |
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| Affiliation: | 1. Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia;2. Institute of Physics, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia;3. Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, USA;1. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain;2. Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Cientificas, 28049 Madrid, Spain;3. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain |
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| Abstract: | A theory is developed, which allows one to calculate intrinsic local modes (ILMs) in infinite lattices and to find the effect of an ILM on phonons. One prediction is the appearance of linear local modes in the lattice nearby an ILM. To check these results, high-precision MD calculations of the vibrations of diatomic chains have been carried through. The results fully confirm the predictions. |
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