Ordering of adsorbed species on quasicrystal surfaces

Joseph Anthony Smerdon (1) , Lisa H Wearing (1) , Joseph Parle (1) , Lydie Leung (1) , Hem Raj Sharma (1) , Julian Ledieu (2) , Ronan Mcgrath (3)

1 Physics
2 LSG2M - Laboratoire de Science et Génie des Matériaux et de Métallurgie
3 Physics

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, Si 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$_{60}$ adsorption on a Pb monolayer film on the ten-fold surface of $d$-Al-Ni-Co.

Mots clés: Physical Sciences

Joseph Anthony Smerdon, Lisa H Wearing, Joseph Parle, Lydie Leung, Hem Raj Sharma, et al.. Ordering of adsorbed species on quasicrystal surfaces. Philosophical Magazine, 2008, 88 (13-15), pp.2073-2082. ⟨10.1080/14786430801914920⟩. ⟨hal-00513865⟩