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The electronic structure of free aluminum clusters: Metallicity and plasmons

På svenska

Author

  • Tomas Andersson
  • Chaofan Zhang
  • Maxim Tchaplyguine
  • Svante Svensson
  • Nils Martensson
  • Olle Bjorneholm

Summary, in English

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]

Department/s

Publishing year

2012

Language

English

Publication/Series

Journal of Chemical Physics

Volume

136

Issue

20

Document type

Journal article

Publisher

American Institute of Physics (AIP)

Topic

  • Natural Sciences
  • Physical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 0021-9606