ISSN:
1434-6079
Keywords:
36.40
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Structural fluctuation of Au55 and Au147 clusters with and without the substrate interaction are examined using model potentials and the transition state theory. It is shown that, for Au55 both with and without the substrate interaction, the cuboctahedral structure (COCT) has a lifetime too short to be observed with an electron microscope while the icosahedral structure (IC) has a lifetime long enough. On the other hand, for Au147 without the substrate interaction, both COCT and IC have lifetimes long enough but the lifetime of IC is too long for both of them to be observed in an observation period, say in several minutes. However, the lifetime is so much reduced by the substrate interaction that both the structures can be observed in an observation period. These results are compared with the experimental facts.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01426687
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