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Evidence of energy diffusion in pure anharmonic disordered chains

  • R. Bourbonnais
  • R. Maynard
Part III: Lattice Excitations and Localised Modes
  • 175 Downloads
Part of the Lecture Notes in Physics book series (LNP, volume 393)

Abstract

We present results of large scale simulations on vibrations of anharmonic disordered chain. We find that anharmonic effects tend to counter the localisation process and lead to diffusion of the energy on the lattice. For the anharmonic ordered case the energy is concentrated in large peaks as the global energy spread linearly in time.

Keywords

Vibrations Non-Linear Effects Localisation Diffusion 

References

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • R. Bourbonnais
    • 1
  • R. Maynard
    • 2
  1. 1.HLRZ, KFA JülichJülich
  2. 2.CRTBT, CNRSGrenoble Cedex

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