Propagative and diffusive regimes of acoustic damping in bulk amorphous material.

  title={Propagative and diffusive regimes of acoustic damping in bulk amorphous material.},
  author={Yaroslav M. Beltukov and D. A. Parshin and Valentina M. Giordano and Anne Tanguy},
  journal={Physical review. E},
  volume={98 2-1},
In amorphous solids, a non-negligible part of thermal conductivity results from phonon scattering on the structural disorder. The conversion of acoustic energy into thermal energy is often measured by the dynamical dtructure factor (DSF) thanks to inelastic neutron or x-ray scattering. The DSF is used to quantify the dispersion relation of phonons, together with their damping. However, the connection of the dynamical structure factor with dynamical attenuation of wave packets in glasses is… 

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