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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/60589

Title: Rotational transitions in a C60 monolayer on the WO2/W(110) surface
Author: KRASNIKOV, SERGEY
SHVETS, IGOR
MURPHY, BARRY
LUBBEN, OLAF
BULFIN, BRENDAN
WU, HAN-CHUN
Sponsor: 
Name Grant Number
00/PI.1/C042

Author's Homepage: http://people.tcd.ie/ivchvets
http://people.tcd.ie/krasniks
http://people.tcd.ie/wuh2
Keywords: Condensed matter physics
thin films
Issue Date: 2011
Publisher: American Physical Society
Citation: Sergey I. Bozhko, Sergey A. Krasnikov, Olaf Lübben, Barry E. Murphy, Kevin Radican, Valery N. Semenov, Han Chun Wu, Brendan Bulfin, and Igor V. Shvets, Rotational transitions in a C60 monolayer on the WO2/W(110) surface, Physical Review B, 84, 19, 2011, 8
Series/Report no.: Physical Review B;
84;
19;
Abstract: Variable-temperature scanning tunneling microscopy (STM) is shown to be an effective technique to study two-dimensional phase transitions. Observations show that a monolayer of C60 deposited on an ultrathin WO2 layer grown on the W(110) surface undergoes a structural phase transition at 259 K, similar in temperature to that of bulk C60. In turn, a kinetic transition has been observed at 220 K, which is significantly higher than that of the bulk C60 crystal (90 K). This difference is attributed to interactions between the molecular overlayer and the substrate, as well as correlation effects within the C60 film. Different types of molecular nanomotion, such as rotation, spinning, and switching between different orientations, have been observed. STM measurements are supported by density functional theory calculations, which provide confirmation of different orientations of C60 on the WO2 thin film.
Description: PUBLISHED
URI: http://hdl.handle.net/2262/60589
Related links: http://link.aps.org/doi/10.1103/PhysRevB.84.195412
Appears in Collections:Physics (Scholarly Publications)

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