https://doi.org/10.1140/epjd/e2003-00183-8
Ultraviolet photoelectron spectroscopy of Nb4- to Nb200-
Fakultät für Physik, Universität Freiburg,
H. Herderstr. 3, 79104 Freiburg, Germany
Corresponding author: a bernd.von.issendorff@uni-freiburg.de
Received:
10
September
2002
Published online:
3
July
2003
We present UV (
eV) photoelectron spectra
of niobium cluster anions Nb
in the size range from n=4 to
n=200. The spectra exhibit a variety of patterns, which can be
related to the geometrical structures of the clusters. The
charging energies of the larger clusters are in very good
agreement with the metallic sphere model. Nevertheless a strong
size dependence of the work function is observed, which underlines
the special properties of this transition metal.
PACS: 33.60.Cv – Ultraviolet and vacuum ultraviolet photoelectron spectra / 36.40.Cg – Electronic and magnetic properties of clusters / 73.22.-f – Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
