| Issue |
Europhys. Lett.
Volume 61, Number 3, February 2003
|
|
|---|---|---|
| Page(s) | 375 - 381 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-00184-7 | |
| Published online | 01 January 2003 | |
Investigation of the 
Shockley-like surface state using confinement to artificial nanostructures
LEPES-CNRS - BP 166, 38042 Grenoble Cedex 9, France
Received:
4
October
2002
Accepted:
22
November
2002
The local density of states (LDOS) at the surface of
nanostructures artificially created on the surface
has been investigated by scanning tunneling microscopy (STM) and
spectroscopy (STS). Standing-waves patterns due to the
confinement of a Shockley-like surface state are observed on
nanoscale triangular islands obtained by an indentation
technique. The characteristics of the dispersion of this state
have been obtained from an analysis of the evolution of the LDOS
modulations with the sample bias. The experimental data are
discussed considering recent band structure calculations.
PACS: 73.20.-r – Electron states at surfaces and interfaces / 73.22.Dj – Single particle states / 68.37.Ef – Scanning tunneling microscopy (including chemistry induced with STM)
© EDP Sciences, 2003
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