Step dynamics and terrace-width distribution on flame-annealed gold films: The effect of step-step interaction

N. Shimoni, S. Ayal, O. Millo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Dynamics of atomic steps and the terrace-width distribution within step bunches on flame-annealed gold films are studied using scanning tunneling microscopy. The distribution is narrower than commonly observed for vicinal planes and has a Gaussian shape, indicating a short-range repulsive interaction between the steps, with an apparently large interaction constant. The dynamics of the atomic steps, on the other hand, appear to be influenced, in addition to these short-range interactions, also by a longer-range attraction of steps towards step bunches. Both types of interactions promote self-ordering of terrace structures on the surface. When current is driven through the films a step-fingering instability sets in, reminiscent of the Bales-Zangwill instability.

Original languageAmerican English
Pages (from-to)13147-13152
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number19
DOIs
StatePublished - 15 Nov 2000

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