Step-Orientation-Dependent Oxidation: From 1D to 2D Oxides

Autor(en)

J Klikovits, Michael A. Schmid, Lindsay R. Merte, Peter Varga, Rasmus Westerström, Andrea Resta, Jesper N. Andersen, Johan Gustafson, Anders Mikkelsen, Edvin Lundgren, Florian Mittendorfer, Georg Kresse

Abstrakt

Using scanning tunneling microscopy and density functional theory, we have studied the initial oxidation of Rh(111) surfaces with two types of straight steps, having {100} and {111} microfacets. The one-dimensional (1D) oxide initially formed at the steps acts as a barrier impeding formation of the 2D oxide on the (111) terrace behind it. We demonstrate that the details of the structure of the 1D oxide govern the rate of 2D oxidation and discuss implications for oxidation of nanoparticles.

Organisation(en)

Computergestützte Materialphysik

Externe Organisation(en)

Technische Universität Wien, Lund University

Journal

Physical Review Letters

Band

101

Anzahl der Seiten

4

ISSN

0031-9007

DOI

https://doi.org/10.1103/PhysRevLett.101.266104

Publikationsdatum

2008

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/980993bd-061b-4445-88f2-84071cab81ca