The electronic structure of free aluminum clusters: Metallicity and plasmons

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The electronic structure of free aluminum clusters: Metallicity and plasmons. / Andersson, Tomas; Zhang, Chaofan; Tchaplyguine, Maxim; Svensson, Svante; Martensson, Nils; Bjorneholm, Olle.

I: Journal of Chemical Physics, Vol. 136, Nr. 20, 2012.

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Andersson, Tomas ; Zhang, Chaofan ; Tchaplyguine, Maxim ; Svensson, Svante ; Martensson, Nils ; Bjorneholm, Olle. / The electronic structure of free aluminum clusters: Metallicity and plasmons. I: Journal of Chemical Physics. 2012 ; Vol. 136, Nr. 20.

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TY - JOUR

T1 - The electronic structure of free aluminum clusters: Metallicity and plasmons

AU - Andersson, Tomas

AU - Zhang, Chaofan

AU - Tchaplyguine, Maxim

AU - Svensson, Svante

AU - Martensson, Nils

AU - Bjorneholm, Olle

PY - 2012

Y1 - 2012

N2 - 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]

AB - 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]

U2 - 10.1063/1.4718362

DO - 10.1063/1.4718362

M3 - Article

VL - 136

JO - Journal of Chemical Physics

T2 - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 20

ER -