PERIODIC FACETING OF AU(4,3,3) OBSERVED BY SCANNING-TUNNELING-MICROSCOPY

Authors
POURMIR F ROUSSET S GAUTHIER S SOTTO M KLEIN J
Citation
F. Pourmir et al., PERIODIC FACETING OF AU(4,3,3) OBSERVED BY SCANNING-TUNNELING-MICROSCOPY, Microscopy microanalysis microstructures, 5(4-6), 1994, pp. 269-276
Citations number
39
Categorie Soggetti
Spectroscopy,Microscopy
Journal title
Microscopy microanalysis microstructures → ACNP
ISSN journal
11542799
Volume
5
Issue
4-6
Year of publication
1994
Pages
269 - 276
Database
ISI
SICI code
1154-2799(1994)5:4-6<269:PFOAOB>2.0.ZU;2-G
Abstract
The Au(4,3,3) surface, vicinal to Au(1,1,1), has been studied by scann ing tunneling microscopy in ultra high vacuum. It is thermally unstabl e towards faceting. For annealing temperatures ranging from 700 K to 1 000 K, the stable state of the faceted surface is found to be a period ic succession of (1,1,1) and (7,5,5) facets. The superperiod is about 110 Angstrom and the length of the close-packed facet is about 40 Angs trom. The occurence of the (7,5,5) facet is discussed in correlation w ith previous equilibrium shape observations. A model to qualitatively account for the periodic formation of facets is proposed.