Ordering of adsorbed species on quasicrystal surfaces

• Published in: Philosophical magazine (2003. Print) Vol. 88; no. 13-15; pp. 2073 - 2082
• Main Authors: Smerdon, J.A., Wearing, L.H., Parle, J.K., Leung, L., Sharma, H.R., Ledieu, J., Mcgrath, R.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Abingdon Taylor & Francis Group 01-05-2008; Taylor & Francis
• Subjects: Condensed matter: structure, mechanical and thermal properties; Crystalline state (including molecular motions in solids); Exact sciences and technology; Physics; quasicrystalline alloys; Quasicrystals; scanning probe microscopy; Semi-periodic solids; Solid surfaces and solid-solid interfaces; STM; Structure of solids and liquids; crystallography; surfaces; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Theory of crystal structure, crystal symmetry; calculations and modeling; Ultrathin films; Metallic adsorbate; Order-disorder transformations; Gadolinium; Iron; Palladium; Electronegativity; Experimental study; Melting points; Quasicrystals; Quasi periodic structure; Thin films; Reviews; Adsorption; Monolayers; Adsorbed state; Fullerenes; Ordering; Nickel; Overlayers; Chemical properties; Atomic structure; Physical Sciences
• ISSN: 1478-6435; 1478-6443; 1478-6433
• DOI: 10.1080/14786430801914920

We present an overview of experimental studies of the structure of adsorbed atomic and molecular species on quasicrystal surfaces with a particular focus on those systems where quasiperiodic ordering of the adsorbate structure occurs. Atomic adsorption is illustrated with examples from studies of Fe and Gd adsorption on the five-fold surface of i-Al-Pd-Mn. Overlayer structure is correlated with several physical parameters to identify trends. It is concluded that the chemical properties of the adsorbate (metallic radius, electronegativity, melting temperature) are important indicators of quasiperiodic structuring of the adsorbate system. These correlations allow predictions of those elements likely to yield pseudomorphic overlayers. Structural effects upon molecular adsorption on clean quasicrystal surfaces have been less successful. A new approach to ordered molecular adsorption is described and illustrated for C
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adsorption on a Pb monolayer film on the ten-fold surface of d-Al-Ni-Co.