Abstract:
:Quasicrystals, materials with aperiodic long-range order, have been found in intermetallics, soft materials such as colloids and supermolecules, and also in two-dimensional monolayer films. Here we present the first example of three-dimensional growth of a single-element quasicrystalline film. Using a hitherto unexplored template, the icosahedral Ag-In-Yb quasicrystal, and various experimental techniques combined with theoretical calculations of adsorption energies, we find that lead atoms deposited on the surface occupy the positions of atoms in the rhombic triacontahedral cluster, the building block of the substrate, and thus grow in layers with different heights and adsorption energies. We show that the adlayer-adlayer interaction is crucial for stabilizing this epitaxial quasicrystalline structure. The finding opens an avenue for further investigation of the impact of the aperiodic atomic order over periodic order on the physical and chemical properties of materials.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Sharma HR,Nozawa K,Smerdon JA,Nugent PJ,McLeod I,Dhanak VR,Shimoda M,Ishii Y,Tsai AP,McGrath Rdoi
10.1038/ncomms3715subject
Has Abstractpub_date
2013-01-01 00:00:00pages
2715issn
2041-1723pii
ncomms3715journal_volume
4pub_type
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