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Interaction of C-60 molecules on Si(100)
journal contribution
posted on 2013-02-01, 11:15 authored by David J. King, Paul C. Frangou, Steven KennySteven KennyThe interactions between pairs of C60 molecules adsorbed upon the Si(1 0 0) surface have been studied via a series of DFT calculations. Configurations which have the fullerene cage located within the dimer trench bonded to four dimers (t4) have been investigated, as these have previously been found to be among the most stable for the C60 molecule. These t4 configurations are explored with all possible pairs of fullerene configuration combinations considered. We have looked at two distinct groups of separation distances between the two C60 molecules. These have the fullerene bonding sites as either adjacent to one another or separated by one Si surface dimer. Comparisons between the two groups confirm the trend of the combinations becoming more favourable at a greater fullerene separation. In the systems with adjacent bonding sites the combined pair of fullerenes were in general less favourable than the two isolated cases. At the longer fullerene separation distance this trend was reversed. The longer fullerene separation distance reflects the experimental separation observed by Moriarty et al. [P. Moriarty, Y.R. Ma, M.D. Upward, P.H. Beton, Surf. Sci. 407 (1998) 27].
History
School
- Science
Department
- Mathematical Sciences
Citation
KING, D.J., FRANGOU, P.C. and KENNY, S.D., 2009. Interaction of C-60 molecules on Si(100). Surface Science, 603 (4), pp. 676 - 682.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publication date
2009Notes
This article was published in the journal, Surface Science [© Elsevier] and the definitive version is available at: http://dx.doi.org/10.1016/j.susc.2008.12.035ISSN
0039-6028Publisher version
Language
- en