On the relation between the presence of the resonance and the type of the spectrum rearrangement in a disordered system
SCIE
SCOPUS
- Title
- On the relation between the presence of the resonance and the type of the spectrum rearrangement in a disordered system
- Authors
- Skrypnyk, YV; Min, BI
- Date Issued
- 2002-12
- Publisher
- PROGRESS THEORETICAL PHYSICS PUBLICAT
- Abstract
- Using a model one-dimensional system, we demonstrate that the single-impurity resonance mode does not always result in a normal cross-type spectrum, rearrangement when the impurity concentration increases. A substitutional impurity strongly bound to the rigid substrate produces a resonance in the optical phonon branch. The subsequent spectrum rearrangement, however, is of an anomalous type, creating a smooth dispersion curve in the vicinity of the resonance frequency instead of a distinctive quasi-gap characteristic of the cross-type.
- Keywords
- LOW-FREQUENCY SOUND; LOCALIZATION; PHONONS; CRYSTALS; LATTICE; STATES
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18760
- DOI
- 10.1143/PTP.108.1021
- ISSN
- 0033-068X
- Article Type
- Article
- Citation
- PROGRESS OF THEORETICAL PHYSICS, vol. 108, no. 6, page. 1021 - 1030, 2002-12
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- There are no files associated with this item.
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