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Photon emission from STM of granular gold in UHV: comparison with air and study of spectra shifting with tip position

Published online by Cambridge University Press:  29 November 2002

Ch. Maurel ,
R. Coratger ,
F. Ajustron ,
G. Seine ,
R. Péchou  and
J. Beauvillain
Ch. Maurel*
Affiliation:
CEMES/CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse, France
R. Coratger
Affiliation:
CEMES/CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse, France
F. Ajustron
Affiliation:
CEMES/CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse, France
G. Seine
Affiliation:
CEMES/CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse, France
R. Péchou
Affiliation:
CEMES/CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse, France
J. Beauvillain
Affiliation:
CEMES/CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse, France
*
[email protected]
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Abstract

This paper presents an experimental study using photon emission derived from scanning tunnelling microscopy (STM) of a granular gold surface in Ultra High Vacuum (UHV). The aim is to make a comparison with previous results obtained in air or in UHV. The photon emission spectrum also evidences a significant energy shift as the tip moves on a surface grain. This shift is attributed to the local geometry of the junction and to peculiar crystallographic properties of the surface.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 21 , Issue 2 , February 2003 , pp. 121 - 126
Copyright
© EDP Sciences, 2003

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