We report on the formation of equilateral triangular clusters hollow inside with 5–6 atoms per side, selfassembled on Ni adislands grown on Rh(111). The observation of standing wave patterns on the Ni adislands and the Rh(111) indicates that the self-assembly is mediated by Friedel oscillations. In this context, we propose a model based on the energy of interaction between adsorbates, which explains the formation of the clusters as a result of the assembly of rows of 5–6 adatoms.
Room-temperature self-assembly of equilateral triangular clusters via Friedel oscillations
DELOGU, FRANCESCO;
2008-01-01
Abstract
We report on the formation of equilateral triangular clusters hollow inside with 5–6 atoms per side, selfassembled on Ni adislands grown on Rh(111). The observation of standing wave patterns on the Ni adislands and the Rh(111) indicates that the self-assembly is mediated by Friedel oscillations. In this context, we propose a model based on the energy of interaction between adsorbates, which explains the formation of the clusters as a result of the assembly of rows of 5–6 adatoms.
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