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The electronic structure of free aluminum clusters: Metallicity and plasmons

Andersson, Tomas; Zhang, Chaofan; Tchaplyguine, Maxim LU ; Svensson, Svante; Martensson, Nils and Bjorneholm, Olle (2012) In Journal of Chemical Physics 136(20).
Abstract
The electronic structure of free aluminum clusters with similar to 3-4 nm radius has been investigated using synchrotron radiation-based photoelectron and Auger electron spectroscopy. A beam of free clusters has been produced using a gas-aggregation source. The 2p core level and the valence band have been probed. Photoelectron energy-loss features corresponding to both bulk and surface plasmon excitation following photoionization of the 2p level have been observed, and the excitation energies have been derived. In contrast to some expectations, the loss features have been detected at energies very close to those of the macroscopic solid. The results are discussed from the point of view of metallic properties in nanoparticles with a finite... (More)
The electronic structure of free aluminum clusters with similar to 3-4 nm radius has been investigated using synchrotron radiation-based photoelectron and Auger electron spectroscopy. A beam of free clusters has been produced using a gas-aggregation source. The 2p core level and the valence band have been probed. Photoelectron energy-loss features corresponding to both bulk and surface plasmon excitation following photoionization of the 2p level have been observed, and the excitation energies have been derived. In contrast to some expectations, the loss features have been detected at energies very close to those of the macroscopic solid. The results are discussed from the point of view of metallic properties in nanoparticles with a finite number of constituent atoms. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4718362] (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Chemical Physics
volume
136
issue
20
publisher
American Institute of Physics
external identifiers
  • wos:000304818400036
  • scopus:84862510015
ISSN
0021-9606
DOI
10.1063/1.4718362
language
English
LU publication?
yes
id
d790ae18-1adb-4957-9848-f323fb289af9 (old id 2903183)
date added to LUP
2012-07-24 10:00:46
date last changed
2017-09-10 03:24:15
@article{d790ae18-1adb-4957-9848-f323fb289af9,
  abstract     = {The electronic structure of free aluminum clusters with similar to 3-4 nm radius has been investigated using synchrotron radiation-based photoelectron and Auger electron spectroscopy. A beam of free clusters has been produced using a gas-aggregation source. The 2p core level and the valence band have been probed. Photoelectron energy-loss features corresponding to both bulk and surface plasmon excitation following photoionization of the 2p level have been observed, and the excitation energies have been derived. In contrast to some expectations, the loss features have been detected at energies very close to those of the macroscopic solid. The results are discussed from the point of view of metallic properties in nanoparticles with a finite number of constituent atoms. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4718362]},
  author       = {Andersson, Tomas and Zhang, Chaofan and Tchaplyguine, Maxim and Svensson, Svante and Martensson, Nils and Bjorneholm, Olle},
  issn         = {0021-9606},
  language     = {eng},
  number       = {20},
  publisher    = {American Institute of Physics},
  series       = {Journal of Chemical Physics},
  title        = {The electronic structure of free aluminum clusters: Metallicity and plasmons},
  url          = {http://dx.doi.org/10.1063/1.4718362},
  volume       = {136},
  year         = {2012},
}