Campus Units

Mathematics, Physics and Astronomy, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

1994

Journal or Book Title

Physical Review Letters

Volume

73

Issue

4

First Page

553

Last Page

557

DOI

10.1103/PhysRevLett.73.553

Abstract

We present results of a comprehensive scanning tunneling microscopy study of the nucleation and growth of Au islands on Au(100). It is shown that the reconstruction of the substrate produces strong anisotropic effects. Rate equation analysis of the experimental flux and temperature dependence of the island density suggests: (i) a critical size of i=3 for T=315−380 K, but i>3 above 400 K; and (ii) strongly anisotropic diffusion, preferentially parallel to the reconstruction rows (activation energy ∼0.2 eV). We comment on energetic and kinetic aspects of the observed island shape anisotropy.

Comments

This article is published as Günther, S., E. Kopatzki, M. C. Bartelt, J. W. Evans, and R. J. Behm. "Anisotropy in nucleation and growth of two-dimensional islands during homoepitaxy on" hex" reconstructed Au (100)." Physical review letters 73, no. 4 (1994): 553, doi:10.1103/PhysRevLett.73.553. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

Share

COinS