Title of article
Self-organization of Ge tetramers on Ag(0 0 1) surface: A 2D realization of unusual substrate mediated interactions
Author/Authors
Oughaddou، نويسنده , , Hamid and Aufray، نويسنده , , Bernard and Bibérian، نويسنده , , Jean-Paul and Ealet، نويسنده , , Bénédicte and Lay، نويسنده , , Guy Le and Tréglia، نويسنده , , Guy and Kara، نويسنده , , Abdelkader and Rahman، نويسنده , , Talat S.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2008
Pages
5
From page
506
To page
510
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.
Keywords
and topography , SELF-ASSEMBLY , morphology , Germanium , Surface thermodynamics , Roughness , Ising models , Construction and use of effective interatomic interactions , Scanning tunneling microscopy , Diffusion and migration , surface structure
Journal title
Surface Science
Serial Year
2008
Journal title
Surface Science
Record number
1702747
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