Campus Units

Chemistry, Materials Science and Engineering, Mathematics, Ames Laboratory

Document Type

Article

Publication Date

1-2003

Journal or Book Title

Physical Review B

Volume

67

Issue

3

First Page

033406-1

Last Page

033406-4

DOI

10.1103/PhysRevB.67.033406

Abstract

Nucleation and growth of thin films of Ag on the fivefold surface of an Al72Pd19.5Mn8.5 icosahedral quasicrystal is studied with scanning-tunneling microscopy. For low coverages, flux-independent island nucleation is observed involving adatom capture at “traps.” With increasing coverage, islands start growing vertically, but then spread, and ultimately form hexagonal nanocrystals. These have fcc symmetry and pyramidlike multilayer stacking along the 〈111〉 direction. The constituent hexagonal islands have five different orientations, rotated by 2π/5, thus reflecting the symmetry of the substrate.

Comments

This article is from Physical Review B 67, no. 3 (2003): 033406, doi:10.1103/PhysRevB.67.033406.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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