Article
Structure and Growth of Height-Selected Ag Islands on Fivefold i-AlPdMn Quasicrystalline Surfaces: STM Analysis and Step Dynamics Modeling
Physical Review Letters
Document Type
Article
Disciplines
Publication Date
1-1-2009
DOI
10.1103/PhysRevLett.102.196103
Abstract
The 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 nonfcc 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 effects.
Copyright Owner
American Physical Society
Copyright Date
2009
Language
en
File Format
application/pdf
Citation Information
Barış Ünal, V. Fournée, Patricia A. Thiel and James W. Evans. "Structure and Growth of Height-Selected Ag Islands on Fivefold i-AlPdMn Quasicrystalline Surfaces: STM Analysis and Step Dynamics Modeling" Physical Review Letters Vol. 102 Iss. 19 (2009) p. 196103 Available at: http://works.bepress.com/patricia_thiel/24/
This article is from Physical Review Letters 102, no. 19 (2009): 196103, doi:10.1103/PhysRevLett.102.196103.