Stability of quasicrystals: energy, entropy and phason modes

Abstract

The energy and entropy contribution to the quasicrystal stability is an on-going matter of debate. In this respect, phason modes play a particular role since these excitations are characteristic of the quasicrystalline long-range order. We present some of the results and list open questions in the field.

Acknowledgements

I thank R. Currat and S. Francoual, for the many enlightening discussions we have had on phason modes.