Table of Contents
International Journal of Spectroscopy
Volume 2014, Article ID 289346, 4 pages
http://dx.doi.org/10.1155/2014/289346
Research Article

The Low Energy Auger Electron Spectroscopy Lines as an Index of the Ba Overlayer Order on the Ni(110) Surface

Department of Physics, University of Ioannina, P.O. Box 1186, 451 10 Ioannina, Epirus, Greece

Received 31 October 2013; Revised 3 February 2014; Accepted 18 February 2014; Published 26 March 2014

Academic Editor: Hakan Arslan

Copyright © 2014 D. Vlachos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We investigate the interaction of Ba with the Ni(110) surface at elevated temperatures by means of Auger electron spectroscopy and low energy electron diffraction. The results show that annealing of the substrate causes desorption and ordering of the initially amorphous overlayer, resulting in c and structures. It is observed that the induced ordering crucially affects the lineshape of the double Auger transition line Ba(73 eV)N45O23P1, establishing this line as an index of ordering of the Ba overlayer. The underlying physics of this effect is discussed.