Rotation dynamics of C{sub 60} molecules in a monolayer fullerene film on the WO{sub 2}/W(110) surface near the rotational phase transition

Journal Article · Fri May 15 00:00:00 EDT 2015 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776115040032· OSTI ID:22472261

Levchenko, E. A. ^[1]; Semenov, V. N. ^[2]; Bulatov, M. F. ^[3]; Shvets, I. V. ^[4]

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1. Astrakhan’ State University (Russian Federation)
2. Russian Academy of Sciences, Institute of Solid State Physics (Russian Federation)
3. State Scientific-Research and Design Institute of Rare-Metal Industry (Russian Federation)
4. Trinity College Dublin, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), School of Physics (Ireland)

The rotation dynamics of C{sub 60} molecules in monolayer fullerene films grown on the WO{sub 2}/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 C{sub 60} 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.

• OSTI ID: 22472261
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 120, Issue 5; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL STRUCTURE
FILMS
FULLERENES
MEAN-FIELD THEORY
MEV RANGE
MOLECULES
ORIENTATION
PHASE TRANSFORMATIONS
POTENTIALS
ROTATION
SCANNING TUNNELING MICROSCOPY
SURFACES
TRANSITION TEMPERATURE
TUNGSTEN
TUNGSTEN OXIDES