Adsorption and manipulation of endohedral and higher fullerenes on (formula presented)

M. J. Butcher, J. W. Nolan, M. R.C. Hunt, P. H. Beton, L. Dunsch, P. Kuran, P. Georgi, T. J.S. Dennis

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The adsorption of the endohedral fullerene, (formula presented) and the higher fullerene, (formula presented) on (formula presented) is investigated using a scanning tunneling microscope (STM) operating in ultrahigh vacuum. Both molecules are found to adsorb directly above the dimer rows that are formed on the (formula presented) surface, as well as in trough sites midway between dimer rows. Adsorption above dimer rows, not observed for (formula presented) is attributed to the larger radius of curvature of these fullerene cages. The response of (formula presented) to manipulation by the tip of the STM is also investigated. Molecules in either adsorption site may be manipulated with a threshold gap impedance ∼1.0 GΩ. Owing to a near-commensurability between the molecular diameter of (formula presented) and the lattice constant of the Si(100) surface, close-packed arrangements of molecules may be formed.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number12
Publication statusPublished - 19 Mar 2003
Externally publishedYes


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