Monodisperse Microisland Formation on Ni/Ru(0001) Monolayers

Peter Jakob, Kai Anhut, Sebastian Schnur, and Axel Groß
Phys. Rev. Lett. 101, 206101 – Published 10 November 2008

Abstract

The creation of identical microislands consisting of Ni trimers and multiples thereof on Ru(0001) induced by oxygen adsorption has been observed using scanning tunnelling microscopy. The island formation is caused by an oxygen induced expulsion of Ni atoms or trimers out of the moiré-distorted (densified) Ni monolayer. The exceptional stability of the Ni trimers is attributed to oxygen attachment, forming Ni-oxygen composites, as verified by detailed density functional theory calculations. The high density, identical structure, and notable thermal stability of these islands open up new perspectives for the study of the properties of nanostructured surfaces.

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  • Received 21 May 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.206101

©2008 American Physical Society

Authors & Affiliations

Peter Jakob1,*, Kai Anhut1, Sebastian Schnur2, and Axel Groß2

  • 1Fachbereich Physik und Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, D-35032 Marburg, Germany
  • 2Institut für Theoretische Chemie, Universität Ulm, D-89069 Ulm, Germany

  • *peter.jakob@physik.uni-marburg.de

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Vol. 101, Iss. 20 — 14 November 2008

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