Structure and Growth of Height-Selected Ag Islands on Fivefoldi−AlPdMnQuasicrystalline Surfaces: STM Analysis and Step Dynamics Modeling | Zendy

Barış Ünal | Zendy; V. Fournée | Zendy; P. A. Thiel | Zendy; J. W. Evans | Zendy

Open Access

Structure and Growth of Height-Selected Ag Islands on Fivefoldi−AlPdMnQuasicrystalline Surfaces: STM Analysis and Step Dynamics Modeling

Author(s) -

Barış Ünal,

V. Fournée,

P. A. Thiel,

J. W. Evans

Publication year - 2009

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.102.196103

Subject(s) - icosahedral symmetry , quasicrystal , nucleation , crystallography , deposition (geology) , materials science , physics , geometry , condensed matter physics , chemistry , geology , thermodynamics , mathematics , paleontology , sediment

International audienceThe development and local structure of height-selected 3-layer Ag islands on fivefold surfaces of icosahedral Al-Pd-Mn quasicrystals is characterized by STM for Ag deposition at 365 K. Heterogeneous nucleation of pseudomorphic single layer high islands is followed by rapid formation of 2nd and 3rd layers and subsequent lateral spreading, where each of these 3 layers consists of a family of non fcc structures. The behavior is elucidated by step dynamics modeling incorporating strain buildup for larger islands, enhanced binding in higher layers, and height selection due to quantum size effect

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