Nano Archive

Size-dependent changes in the electronic structure of metal clusters as investigated by scanning tunneling spectroscopy

Vinod, C. P. and Kulkarni, G. U. and Rao, C. N. R. (1998) Size-dependent changes in the electronic structure of metal clusters as investigated by scanning tunneling spectroscopy. Chemical Physics Letters, 289 (3-4). pp. 329-333.

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Abstract

Pd, Ag, Cd and Au clusters of varying sizes have been investigated by scanning tunneling spectroscopy under ultra-high vacuum. The conductance of the clusters decreases markedly when the cluster diameter is F1 nm. A plot of the density of states at the Fermi level against the cluster volume varies nearly linearly up to a cluster volume of 4 nm3diameter ;2 nm.. Below a cluster diameter of 1 nm, an energy gap occurs, the value of which increases with the decrease in cluster size, reaching values up to 70 meV at small sizes. Clearly, the very small clusters tend to become non-metallic. q1998 Published by Elsevier Science B.V. All rights reserved.

Item Type:Article
Subjects:Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:2565
Deposited By:JNCASR
Deposited On:20 Jan 2009 11:39
Last Modified:21 Apr 2009 06:00

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