UV-visible absorption of small gold clusters in neon: Au n ( n = 1-5 and 7-9)

We present optical absorption spectra in the UV-visible range (1.5 eV < E < 6 eV) for mass selected neutral gold clusters Au n ( n = 1-5 and 7-9) embedded in solid Ne at 7 K. The experimental spectra are compared with time-dependent density functional calculations. Electronic transitions are d...

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Bibliographic Details
Published in:The Journal of chemical physics 2011-02, Vol.134 (7), p.074302-074302-8
Main Authors: Lecoultre, S., Rydlo, A., Félix, C., Buttet, J., Gilb, S., Harbich, W.
Format: Article
Language:English
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Summary:We present optical absorption spectra in the UV-visible range (1.5 eV < E < 6 eV) for mass selected neutral gold clusters Au n ( n = 1-5 and 7-9) embedded in solid Ne at 7 K. The experimental spectra are compared with time-dependent density functional calculations. Electronic transitions are distributed over the whole energy range without any concentration of the oscillator strength in a small energy window, characteristic for the more s -like metals such as the alkalis or silver. Contrary to the case of silver and partly copper clusters, transitions issued from mainly d -type states are significantly involved in low energy transitions. The measured integrated cross section is smaller (
ISSN:0021-9606
1089-7690
DOI:10.1063/1.3537739