Deformed Surface Oxides: Uncommon Structure of a (6x1) NiO Surface Oxide on Rh(111)
- Author(s)
- Thomas Franz, Jan Zabloudil, Florian Mittendorfer, Luca Gragnaniello, Georg Parteder, Francesco Allegretti, Svetlozar L. Surnev, Falko P. Netzer
- Abstract
We have investigated the formation of a nickel, oxide monolayer on Rh(111) by scanning tunneling microscopy (STM), high-resolution electron energy loss spectroscopy (HREELS), and density functional theory (DFT) calculations. This monolayer displays a corrugated (6 X 1) superstructure, with a formal Ni(5)O(5) stoichiometry. The interplay between polarity and interface energy leads to the formation of a structure with pronounced troughs, which may be regarded as a building deformation, containing building blocks derived from nonpolar (100) and polar (111) NiO surface terminations. The calculations also show that the (6 X 1) Ni(5)O(5) phase has a higher thermodynamic stability than the related octopolar NiO bulk terminations.
- Organisation(s)
- Computational Materials Physics
- External organisation(s)
- Karl-Franzens-Universität Graz
- Journal
- The Journal of Physical Chemistry Letters
- Volume
- 3
- Pages
- 186-190
- No. of pages
- 5
- DOI
- https://doi.org/10.1021/jz201527z
- Publication date
- 2012
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103020 Surface physics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/2053d3a4-2699-4fd8-a8fd-6f3201e382b2