https://doi.org/10.1051/epjap:2002110
Photon emission from STM of granular gold in UHV: comparison with air and study of spectra shifting with tip position
CEMES/CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse, France
Corresponding author: maurel@cemes.fr
Received:
13
June
2002
Revised:
17
September
2002
Accepted:
1
October
2002
Published online:
29
November
2002
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.
PACS: 07.79.Cz – Scanning tunneling microscopes / 73.20.Mf – Collective excitations
© EDP Sciences, 2003