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The Development of Metallic Behaviour in Clusters on Surfaces
M. R. C. Hunt and R. E. Palmer
Philosophical Transactions: Mathematical, Physical and Engineering Sciences
Vol. 356, No. 1735, The Metal-Non-Metal Transition in Macroscopic and Microscopic Systems (Jan. 15, 1998), pp. 231-247
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/54964
Page Count: 17
You can always find the topics here!Topics: Material films, Alkali metals, Graphite, Electronic structure, Molecules, Photoelectric emission, Atoms, Adsorption, Materials, Oxidation
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The transition between metallic and insulating behaviour in three prototype nanometre scale systems, alkali metal monolayers adsorbed on graphite, C60 monolayers adsorbed on metal surfaces and small metal clusters on surfaces, are examined. The transition between metallic and non-metallic behaviour is shown to be governed by fundamentally different physical phenomena in each system, indicating the need to consider the precise details of individual systems. The power of the surface science techniques of electron energy loss spectroscopy (EELS) and photoemission spectroscopy (PES) for investigating metallic and insulating behaviour in nm scale systems is demonstrated via measurements made on the model systems. We also review the state-of-the-art in cluster beam deposition and show that it is now possible to create monodisperse supported cluster films, the electronic structure of which may be interrogated by EELS and PES.
Philosophical Transactions: Mathematical, Physical and Engineering Sciences © 1998 Royal Society