Detection of quantum confined states in au nanoclusters by alkali ion scattering

Charge state-resolved time-of-flight spectra were collected for 2.0 keV 23Na+ scattered from Au nanoclusters deposited on TiO2(110). The neutral fraction of Na scattered from metallic Au is low ( approximately 3%), but it is surprisingly high (up to 50%) for small clusters. The results demonstrate t...

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Bibliographic Details
Published in:Physical review letters 2004-05, Vol.92 (21), p.216801-216801, Article 216801
Main Authors: Liu, G F, Sroubek, Z, Yarmoff, J A
Format: Article
Language:English
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Summary:Charge state-resolved time-of-flight spectra were collected for 2.0 keV 23Na+ scattered from Au nanoclusters deposited on TiO2(110). The neutral fraction of Na scattered from metallic Au is low ( approximately 3%), but it is surprisingly high (up to 50%) for small clusters. The results demonstrate that alkali ions couple to electronic states specific to the nanoclusters, and that the energy of the states is a function of the nanocluster size. This technique provides a new method for the spectroscopy of nanomaterials.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.92.216801