Ordering of adsorbed species on quasicrystal surfaces

Abstract

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Nucleation and growth of a quasicrystalline monolayer: Bi adsorption on the fivefold surface ofi-Al70Pd21Mn9Smerdon1, Parle2, Wearing3 et al. 2008Phys. Rev. BSelf Cite506440View full textAdd to dashboardCite

“…These surfaces provide interesting templates for the investigation of epitaxial growth. Such studies have been undertaken on several quasicrystals [1,2,3,4], and quasicrystalline single element clusters and monolayers have been found on both icosahedral and decagonal quasicrystal surfaces. On the five-fold surface of icosahedral AlPd-Mn (i-Al-Pd-Mn), which is the substrate of interest in this work, Franke and co-workers found using low energy electron diffraction (LEED) and helium atom scattering (HAS) that Sb and Bi form ordered quasicrystalline monolayers [5].…”

Quasicrystals: diversity and complexity

“…Studies of the surfaces of quasicrystals have become a central component of quasicrystal research in the last decade or so [37,38]-a consequence of the availability of high-quality samples, discussed above, but also of the rapid development of sophisticated experimental techniques. Reports on surface studies at ICQ11 were numerous, providing important information not only on the surface structures but also, and maybe more importantly, on electronic, mechanical, tribological, and other physical properties of quasicrystals.…”

“…This potential was demonstrated by the group of An Pang Tsai, who studied the performance of catalysts produced from AlNiCo decagonal quasicrystals [40] and AlCuFe icosahedral quasicrystals [41] regarding methane reforming and hydrogen production, respectively. The use of quasicrystal surfaces as templates for inducing the growth of two-dimensional atomic layers with quasiperiodic order has become a very active aspect of quasicrystal research [37]. Many examples were presented at ICQ11, including the deposition of Ag, Cu, Bi, Sb, and Pb on different quasicrystals or CMAs [7,[42][43][44][45][46], self-segregation of Zn at the surface of decagonal AlMgZn [8], and the formation of quantum dots confining electrons on quasicrystalline templates [47].…”

Variation of growth morphology with chemical composition of terraces: Ag on a twofold surface of a decagonal Al-Cu-Co quasicrystal

“…To this end, successful and unsuccessful attempts have been made over the past decade with films of different single elements, such as Ag, Pb, Cu, Bi, and Na, on different quasicrystalline surfaces. [8][9][10][11][12][13] Pseudomorphic Ag islands have been observed by scanning tunneling microscope ͑STM͒ on the fivefold Al-Pd-Mn quasicrystalline substrate in the submonolayer range. 14 However, above submonolayer coverage, three-dimensional ͑3D͒ islands develop exhibiting quantum size effects.…”