Title

Self-Organization Of Ge Tetramers On Ag(0 0 1) Surface: A 2D Realization Of Unusual Substrate Mediated Interactions

Keywords

Construction and use of effective interatomic interactions; Diffusion and migration; Germanium; Ising models; Scanning tunneling microscopy; Self-assembly; Surface structure, morphology, roughness, and topography; Surface thermodynamics

Abstract

Scanning tunneling microscopy (STM) images recorded during dissolution of a half-monolayer Ge on a Ag(0 0 1) show that it proceeds by the disappearance of tetramer entities. Moreover, they reveal that the successive slowing down in the kinetics, observed during this dissolution, correspond to the formation of ordered 2D arrangements of tetramer vacancies. A lattice gas analysis of the latter predicts a very unusual sequence of pair interactions between these vacancies, probably mediated by the substrate. © 2007 Elsevier B.V. All rights reserved.

Publication Date

1-15-2008

Publication Title

Surface Science

Volume

602

Issue

2

Number of Pages

506-510

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.susc.2007.10.053

Socpus ID

38349185362 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/38349185362

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