Growth modes of quasicrystals

The growth of quasicrystals, i.e., aperiodic structures with long-range order, seeded from the melt is investigated using a dynamical phase field crystal model. Depending on the thermodynamic conditions, two different growth modes are detected, namely defect-free growth of the stable quasicrystal an...

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Bibliographic Details
Published in:Physical review letters 2014-06, Vol.112 (25), p.255501-255501, Article 255501
Main Authors: Achim, C V, Schmiedeberg, M, Löwen, H
Format: Article
Language:English
Subjects:
Crystal defects
Crystal structure
Long range order
Melts (crystal growth)
Order disorder
Quasicrystals
Thermodynamics
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Summary:The growth of quasicrystals, i.e., aperiodic structures with long-range order, seeded from the melt is investigated using a dynamical phase field crystal model. Depending on the thermodynamic conditions, two different growth modes are detected, namely defect-free growth of the stable quasicrystal and a mode dominated by phasonic flips which are incorporated as local defects into the grown structure such that random tilinglike ordering emerges. The latter growth mode is unique to quasicrystals and can be verified in experiments on one-component mesoscopic systems.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.112.255501