| Issue |
Europhys. Lett.
Volume 64, Number 4, November 2003
|
|
|---|---|---|
| Page(s) | 475 - 481 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-00235-7 | |
| Published online | 01 November 2003 | |
Correlation between STM-induced photon emission and
barrier height: The case of the 
alloy vicinal surface
CEA-Saclay, Service de Physique et Chimie des Surfaces
et Interfaces F-91191 Gif-sur-Yvette Cedex, France
Received:
5
May
2003
Accepted:
3
September
2003
The photon emission induced by STM on the vicinal
surface is found to present a yield
comparable to pure 
. The control of the chemical
ordering process permits to obtain ordered phases with a surface
exhibiting either a paired-stepped structure with mixed
- terraces over a pure atomic plane or
a facetted structure. The STM-induced luminescence intensity of
both surface types presents a high contrast between terraces and
step edges. The photon emission efficiency is strongly correlated
with the local barrier height, itself being influenced by local chemical
characteristics and step distribution.
PACS: 73.20.At – Surface states, band structure, electron density of states / 73.40.Gk – Tunneling / 78.68.+m – Optical properties of surfaces
© EDP Sciences, 2003
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