Aperiodic and modulated Pb thin films on fivefold icosahedral Al-Cu-Fe and Al(111): Tailoring the structure of Pb - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2009

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

Résumé

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 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 mono-layer. On the Al111 substrate, the mobility of Pb adatoms is high and the interaction with the substrate is flatter, leading to the formation of a 31 31R8.95° higher-order commensurate structure. This moiré structure propagates up to the highest coverages investigated.
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hal-01665153 , version 1 (15-12-2017)

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Th. Deniozou, Julian Ledieu, Vincent Fournée, D.M. Wu, T.A. Lograsso, et al.. Aperiodic and modulated Pb thin films on fivefold icosahedral Al-Cu-Fe and Al(111): Tailoring the structure of Pb. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2009, 79 (24), pp.245405. ⟨10.1103/PhysRevB.79.245405⟩. ⟨hal-01665153⟩
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