Abstract
The rotation dynamics of C60 molecules in monolayer fullerene films grown on the WO2/W(110) surface is studied by scanning tunneling microscopy. The formation of molecule clusters, which have a high libron vibration amplitude, is detected near the rotational phase transition temperature. The energy parameters that determine a change in the molecule orientation, namely, the energy difference between the nearest minima of the C60 molecule energy (30 meV) as a function of the molecule orientation and the potential barrier between them (610 meV), are determined. The results are discussed in terms of the mean-field approximation.
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Original Russian Text © S.I. Bozhko, E.A. Levchenko, V.N. Semenov, M.F. Bulatov, I.V. Shvets, 2015, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2015, Vol. 147, No. 5, pp. 962–969.
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Bozhko, S.I., Levchenko, E.A., Semenov, V.N. et al. Rotation dynamics of C60 molecules in a monolayer fullerene film on the WO2/W(110) surface near the rotational phase transition. J. Exp. Theor. Phys. 120, 831–837 (2015). https://doi.org/10.1134/S1063776115040032
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DOI: https://doi.org/10.1134/S1063776115040032