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Träfflista för sökning "WFRF:(Peredkov S.) ;srt2:(2007)"

Sökning: WFRF:(Peredkov S.) > (2007)

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1.
  • Peredkov, Sergey, et al. (författare)
  • Free nanoscale sodium clusters studied by core-level photoelectron spectroscopy
  • 2007
  • Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 75:23, s. 235407-
  • Tidskriftsartikel (refereegranskat)abstract
    • Free sodium metal clusters have been studied by probing the Na2p core level using x-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). The development of electronic structure with size has been studied and discussed in comparison with the atom, dimer, and solid. Information on cluster metallic properties, size, and temperature has been deduced from the XPS measurements. For the large ⟨N⟩>103 Na clusters, the surface and bulk sites have been separated in the photoelectron signal. Auger spectra allowed extracting the information on the valence band. The present study introduces core-level spectroscopies XPS and AES into the field of free neutral metal cluster research.
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2.
  • Tchaplyguine, Maxim, et al. (författare)
  • Direct observation of the non-supported metal nanoparticle electron density of states by X-ray photoelectron spectroscopy
  • 2007
  • Ingår i: European Physical Journal D. - : Springer Science and Business Media LLC. - 1434-6060 .- 1434-6079. ; 45:2, s. 295-299
  • Tidskriftsartikel (refereegranskat)abstract
    • Synchrotron-based X-ray photoelectron spectroscopy on copper and silver cluster beams created by a magnetron-based gas-aggregation source has allowed mapping the electron density of states (DOS) of free metallic nanoparticles. The cluster DOS profiles obtained in the experiments strongly resemble the infinite solid DOS shapes, but the extracted cluster work-functions are lower than those for the bulk metal. The latter observation is explained by the initial negative charge on most of the clusters, created by the source.
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