11. The phonon transition contributions from all lattice modes constitute the phonon sideband. 12. The phonon transition contributions from all lattice modes constitute the phonon sideband. 13. Every one of this " excitation packages " is called phonon 14. Also phonon dispersion law is required to be linear and isotropic too. 15. Thermal conduction in most solids is mediated by phonon diffusion. 16. While the phonon wavenumber and wavevector are ? and q. 17. Metals however, are not restricted to only phonon -based heat conduction. 18. Despite its 2-D nature, graphene has 3 acoustic phonon modes. 19. The resulting phonon -polaritons will travel laterally away from the excitation regions. 20. In other words, a fracton band is comparable to a phonon band.
