Abstract
We present evidence for a finite-temperature phase transition in the phason elasticity of quasicrystals. A tiling model for energetically stabilized decagonal quasicrystals has been studied in an extensive series of Monte Carlo simulations. The Hamiltonian (energetics) of the model is given by nearest-neighbor Penrose-like matching rules between three-dimensional unit cells. A new order parameter and diagnostics have been introduced. We show that a transition from locked-phason to unlocked-phason dynamics occurs at finite temperature. In the unlocked phase, phasons can be thermodynamically excited even though the quasicrystal is energetically stabilized at low temperatures.
Original language | English (US) |
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Pages (from-to) | 9394-9403 |
Number of pages | 10 |
Journal | Physical Review B |
Volume | 48 |
Issue number | 13 |
DOIs | |
State | Published - 1993 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics