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Phys. Rev. B 63, 085417 (2001) [5 pages]

Orientational configurations of the C60 molecules in the (2×2) superlattice on a solid C60 (111) surface at low temperature

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Haiqian Wang, Changgan Zeng, Bing Wang, and J. G. Hou *
Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China

Qunxiang Li and Jinlong Yang
Open Laboratory of Bond Selective Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China

Received 17 July 2000; published 7 February 2001

The orientational configurations of C60 molecules on the surface of a multilayer C60 island with a (111)-terminating plane were studied at 78 K by using a scanning tunneling microscope. A 2×2 superlattice, which resulted from the orientational ordering of the C60 molecules, was observed. In each unit cell of the superlattice, one C60 molecule with a three-lobe intramolecular pattern, and three C60 molecules with dumbbell-like intramolecular patterns, were clearly resolved. In combination with the theoretical analysis and simulation, the orientational configurations of the C60 molecules were determined.


©2001 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.63.085417
DOI: 10.1103/PhysRevB.63.085417
PACS: 61.48.+c, 68.65.-k, 73.61.Wp

* Author to whom the correspondence should be addressed.

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