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.
Finite-temperature elasticity phase transition in decagonal quasicrystals.
H.-C. Jeong,Paul J. Steinhardt
Published 1993 in Physical Review B (Condensed Matter)
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PUBLICATION RECORD
- Publication year
1993
- Venue
Physical Review B (Condensed Matter)
- Publication date
1993-06-24
- Fields of study
Materials Science, Physics, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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