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Low-frequency Raman scattering in model disordered solids: percolators above threshold

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  • Pilla, O.
  • Viliani, G.
  • Dell'Anna, R.
  • Ruocco, G.

Abstract

The Raman coupling coefficients of site- and bond-percolators at concentration higher than percolation threshold are computed for two scattering mechanisms: bond polarizability (BPOL) and dipole-induced-dipole (DID). The results show that DID does not follow a scaling law at low frequency, while in the case of BPOL the situation is less clear. The numerically computed frequency dependence in the case of BPOL, which can be considered a good scattering mechanism for a wide class of real glasses, is in semiquantitative agreement with experimental results.

Suggested Citation

  • Pilla, O. & Viliani, G. & Dell'Anna, R. & Ruocco, G., 1997. "Low-frequency Raman scattering in model disordered solids: percolators above threshold," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 247(1), pages 23-29.
    • Handle: RePEc:eee:phsmap:v:247:y:1997:i:1:p:23-29
    DOI: 10.1016/S0378-4371(97)00391-9
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    References listed on IDEAS

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    1. Achibat, T. & Boukenter, A. & Duval, E. & Frick, B. & Garcia, N. & Serughetti, J., 1993. "Comparison between light and neutron inelastic scatterings. The frequency linear behaviour of the light-vibration coupling coefficient," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 201(1), pages 257-262.
    2. Corbacho, Juan Carlos Sola, 1994. "Familia y poder en Nueva España. Memoria del tercer Simposio de Historia de las Mentalidades. Seminario de Historia de las Mentalidades. Serie Historia, México, Instituto Nacional de Antropología e," Revista de Historia Económica / Journal of Iberian and Latin American Economic History, Cambridge University Press, vol. 12(2), pages 443-448, September.
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