English, Article edition: DYNAMICAL PROPERTIES OF THE INTERFACE BETWEEN TWO THIN FILMS H. BOUMRAR; O. RAFIL; M. TAMINE; ...

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Physical Description
  • article
Language
  • English

Edition details

Title
  • DYNAMICAL PROPERTIES OF THE INTERFACE BETWEEN TWO THIN FILMS
Author
  • H. BOUMRAR
  • O. RAFIL
  • M. TAMINE
  • R. TIGRINE
Physical Description
  • article
Notes
  • The effect on the vibrational properties of nanostructures at the interface between two thin films is presented. The model used consists of the coupling of two semi-infinite plans A and B having three and two atomic layers, respectively. Theoretical calculations of localized phonon modes and vibrational field were carried out using the matching procedure. Close to the interface, the transversal translational symmetry is broken down inducing Raleigh-like branches. The polarization degeneracy of the ordered surface Raleigh mode in the longitudinal direction is lifted. The presence of acoustic and optical-like phonons is discussed in terms of the elastic constant forces. The density of states and the spectral densities are presented for sample atomic sites. A hyperfine resonance structure is obtained. It allows the analysis of the dynamical evolution from thin film A to thin film B.
  • Clusters, elastic waves, interface, nanostructures, surface phonons, 61.46.+w, 68.65.+g
  • RePEc:wsi:srlxxx:v:12:y:2005:i:01:p:85-96
Language
  • English
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