Role of Intermolecular Separation in Nanoscale Patterning C 60 Films by Local Injection of Electrons from Scanning Tunneling Microscope Tip

A systematic study on the polymerization and decomposition of C 60 molecules induced by electron injection from scanning tunneling microscope (STM) tips has revealed that increasing intermolecular separation in the lateral directions with respect to the surface reduces both polymerization and decomp...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2005-10, Vol.44 (10L), p.L1373
Main Authors: Nakamura, Yoshiaki, Mera, Yutaka, Maeda, Koji
Format: Article
Language:English
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Summary:A systematic study on the polymerization and decomposition of C 60 molecules induced by electron injection from scanning tunneling microscope (STM) tips has revealed that increasing intermolecular separation in the lateral directions with respect to the surface reduces both polymerization and decomposition reaction efficiencies and suppresses the spreading effect of polymerization from the electron injection point, down to ∼2 nm under a good condition. This is understood by considering that the wider lateral intermolecular separation and hence the smaller intermolecular spacing vertical to the surface lead to a suppression of electron spreading parallel to the surface but its enhancement normal to the surface, resulting in the small localization of molecular reactions on the surface.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.44.L1373