Formation of a quasicrystalline Pb monolayer on the 10-fold surface of the decagonal Al–Ni–Co quasicrystal

Smerdon, J. A.; Leung, Lydie; Parle, Joseph; Jenks, Cynthia J.; McGrath, R.; Fournée, V.; Ledieu, J.

doi:10.1016/j.susc.2008.05.029

Cited by 28 publications

(27 citation statements)

References 38 publications

(44 reference statements)

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“…12,13 The size of the smallest pentagonal Pb feature observed in this study ͑edge length ϳ4.8 Å͒ is similar to what was observed on i-Al-Pd-Mn substrate ͑ϳ4.9 Å͒. The smallest pentagonal structural elements present on the clean substrate have an edge length of 3.0 Å, i.e., smaller than the smallest pentagon within the Pb structure.…”

Section: A Pb Adsorption On the Fivefold Surface Of The I-al-cu-fe Qsupporting

confidence: 83%

“…[8][9][10] A true two-dimensional ͑2D͒ quasiperiodic structure has been achieved only for specific elements, typically low melting point elements such as Pb, Bi, Sb, and Sn or rare gases such as Xe. [11][12][13][14][15] First, Franke et al 11 reported evidence for the formation of quasiperiodic Bi or Sb monolayers ͑MLs͒ deposited on either the fivefold surface of the i-Al-Pd-Mn or the tenfold surface of the d-Al-Ni-Co. The quasiperiodic structure of the monolayers was characterized using low-energy electron diffraction ͑LEED͒ and helium atom scattering.…”

Section: Introductionmentioning

confidence: 99%

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Aperiodic and modulated Pb thin films on fivefold icosahedral Al-Cu-Fe and Al(111): Tailoring the structure of Pb

et al. 2009

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We report on the growth of Pb thin films deposited either on the Al-rich fivefold surface of the icosahedral AlCu-Fe quasicrystal or on the (111) surface of fcc Al. On the quasicrystalline substrate, the diffusion length of Pb adatoms is short due to heterogeneous nucleation that enforces a quasiperiodic structure in the monolayer. On the Al(111) substrate, the mobility of Pb adatoms is high and the interaction with the substrate is flatter, leading to the formation of a (√31×√31)R8.95° higher-order commensurate structure. This moiré structure propagates up to the highest coverages investigated. Disciplines Condensed Matter Physics | Metallurgy CommentsThis article is from Physical Review B 79 (2009) We report on the growth of Pb thin films deposited either on the Al-rich fivefold surface of the icosahedral Al-Cu-Fe quasicrystal or on the ͑111͒ surface of fcc Al. On the quasicrystalline substrate, the diffusion length of Pb adatoms is short due to heterogeneous nucleation that enforces a quasiperiodic structure in the monolayer. On the Al͑111͒ substrate, the mobility of Pb adatoms is high and the interaction with the substrate is flatter, leading to the formation of a ͑ͱ31ϫ ͱ 31͒R8.95°higher-order commensurate structure. This moiré structure propagates up to the highest coverages investigated.

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Section: A Pb Adsorption On the Fivefold Surface Of The I-al-cu-fe Qsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Aperiodic and modulated Pb thin films on fivefold icosahedral Al-Cu-Fe and Al(111): Tailoring the structure of Pb

et al. 2009

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“…19 Up to now, previous attempts have been unsuccessful. [20][21][22][23] In this work we demonstrate two examples of templated growth of quasicrystalline molecular layers. C 60 on face-centered icosahedral Al-Cu-Fe and Pn on simple icosahedral Ag-In-Yb form extended quasicrystalline networks with well-defined nucleation sites.…”

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Templated Quasicrystalline Molecular Ordering

et al. 2014

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Quasicrystals are materials with long-range ordering but no periodicity. We report scanning tunneling microscopy (STM) observations of quasicrystalline molecular layers on 5-fold quasicrystal surfaces. The molecules adopt positions and orientations on the surface consistent with the quasicrystalline ordering of the substrate. Carbon-60 adsorbs atop sufficiently separated Fe atoms on icosahedral Al–Cu–Fe to form a unique quasicrystalline lattice, whereas further C60 molecules decorate remaining surface Fe atoms in a quasi-degenerate fashion. Pentacene (Pn) adsorbs at 10-fold symmetric points around surface-bisected rhombic triacontahedral clusters in icosahedral Ag–In–Yb. These systems constitute the first demonstrations of quasicrystalline molecular ordering on a template.

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“…Several interesting results have been observed in adsorption on surfaces of the Al-based quasicrystals (ref. 7 and references therein), which include pseudomorphic monolayers of Bi 12,13 , Sb 12 , Pb 14,15 and Sn 16 , quasiperiodically modulated multilayer structures of Cu 17,18 and Co 19 , fivefold twinned islands with magic heights influenced by quantum size effects 20 and a non-fcc structure of Ag 21 .…”

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Templated three-dimensional growth of quasicrystalline lead

et al. 2013

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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 adlayeradlayer 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.

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Formation of a quasicrystalline Pb monolayer on the 10-fold surface of the decagonal Al–Ni–Co quasicrystal

Cited by 28 publications

References 38 publications

Aperiodic and modulated Pb thin films on fivefold icosahedral Al-Cu-Fe and Al(111): Tailoring the structure of Pb

Aperiodic and modulated Pb thin films on fivefold icosahedral Al-Cu-Fe and Al(111): Tailoring the structure of Pb

Templated Quasicrystalline Molecular Ordering

Templated three-dimensional growth of quasicrystalline lead

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