Disclinations in C60 molecular layers on WO2/ W(110) surfaces
Citation:
Bozhko, S.I. Taupin, V. Lebyodkin, M. Fressengeas, C. Levchenko, E.A. Radikan, K. Lübben, O. Semenov, V.N. Shvets, I.V., Disclinations in C60 molecular layers on WO2/ W(110) surfaces, Physical Review B, 90, 21, 2014, 214106 -Download Item:
Abstract:
A scanning tunneling microscopy study of a planar close-packed C
60
hexagonal molecular layer on a
WO
2
/
W(110) substrate reveals the existence of C
60
domains exhibiting two preferred orientations at an angle
with an underlying periodic groove structure in the substrate. An analysis of the van der Waals interactions
between substrate and layer retrieves the observed misorientations as those corresponding to minima in the
interaction energy of the substrate-layer system. The misorientation between two C
60
domains is accommodated
in a tilt boundary by a linear array of molecular structural units identified as disclination dipoles, i.e., rotational
defects in the hexagonal structure of the layer. A field theory of disclinations and dislocations is used to construct
maps of the elastic energy, strains, curvatures, and stresses induced by the lattice defects over the layer. The
predicted regions of high compression are found to overlap with those where the fullerene molecules do not
undergo rotation.
Author's Homepage:
http://people.tcd.ie/ivchvetsDescription:
PUBLISHED
Author: SHVETS, IGOR
Type of material:
Journal ArticleCollections
Series/Report no:
Physical Review B90
21
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Full text availableKeywords:
planar close-packed CDOI:
http://dx.doi.org/10.1103/PhysRevB.90.214106Metadata
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