title: Room-temperature self-assembly of equilateral triangular clusters via Friedel oscillations.
abstract: We report on the formation of equilateral triangular clusters hollow inside with 5-6 atoms per side, self-assembled 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.
authors.affiliation: School of Physics, CRANN, Trinity College, Dublin 2, Ireland. gmanai@tcd.ie
authors.forename: G
authors.initials: G
authors.lastname: Manai
authors.forename: K
authors.initials: K
authors.lastname: Radican
authors.forename: F
authors.initials: F
authors.lastname: Delogu
authors.forename: I V
authors.initials: IV
authors.lastname: Shvets