Direct imaging of 13-Ã…-diam Au clusters using scanning tunneling microscopy

Baró, A. M.; Bartolome, A.; Vazquez, L.; García, N.; Reifenberger, R.; Choi, E.; Andres, R. P.
November 1987
Applied Physics Letters;11/16/1987, Vol. 51 Issue 20, p1594
Academic Journal
Controlled size clusters of Au with a diameter of 13 Ã…, prepared using a multiple expansion cluster source, have been supported on highly oriented pyrolytic graphite and observed with a scanning tunneling microscope. A reliable constant-current signature for a metallic cluster supported on a graphite substrate is identified. Images of the supported Au clusters are found to exhibit a narrow size distribution and a diameter which is in close agreement with the diameter predicted from conditions in the multiple expansion cluster source.


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