A Distinctive Feature of the Surface Structure of Quasicrystals: Intrinsic and Extrinsic Heterogeneity

TitleA Distinctive Feature of the Surface Structure of Quasicrystals: Intrinsic and Extrinsic Heterogeneity
Publication TypeJournal Article
Year of Publication2011
AuthorsThiel PA, Unal B, Jenks CJ, Goldman AI, Canfield PC, Lograsso TA, Evans JW, Quiquandon M, Gratias D, Van Hove MA
Journal TitleIsrael Journal of Chemistry
Volume51
Pages1326-1339
Date Published12
Type of ArticleReview
ISBN Number0021-2148
Accession NumberWOS:000298790700021
Keywords5-FOLD PLANE SURFACE, adsorption, al-pd-mn, alpdmn, anisotropy, energy-electron diffraction, fivefold surface, growth, quasicrystal, scanning probe microscopy, scanning-tunneling-microscopy, surface structure, symmetry, x-ray-diffraction
Abstract

This paper reviews a feature of atomically-clean quasicrystal surfaces that distinguishes them from surfaces of crystalline materials. That feature is a high degree of heterogeneity among different terraces, and among structurally-identical adsorption sites. The heterogeneity can be both structural and chemical in origin. A large variability is expected even for a surface which is perfectly bulk-terminated, and we call this intrinsic heterogeneity. Additional variability can derive from the surface preparation process, which can yield metastable structures. We call this extrinsic heterogeneity. Experimental evidence is given for both cases. This heterogeneity can be an important factor in understanding and predicting surface phenomena such as chemisorption.

URL<Go to ISI>://WOS:000298790700021
DOI10.1002/ijch.201100148
Alternate JournalIsr. J. Chem.