Nanostructuring surfaces: Deconstruction of thePt(110)−(1×2)surface byC60

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Abstract
When deposited on metal surfaces, C60 creates nanoholes. Grazing incidence x-ray diffraction reveals a c(4\ifmmode\times\else\texttimes\fi{}4) reconstruction induced by C60 on Pt(110)-(1\ifmmode\times\else\texttimes\fi{}2). While the initial (1\ifmmode\times\else\texttimes\fi{}2) missing row is partially deconstructed, under each fullerene we find double atomic vacancy involving two Pt layers. The resulting interface is deeply modified with a 75% Pt occupancy and regularly distributed double vacancy. The orientation of the molecule is compatible with local surface cm symmetry with a pentagonal ring almost parallel to the surface while hexagonal rings are almost parallel to the (111) facets of the nanohole. The short nearest-neighbor C60 distances increase the van der Waals repulsion forces that are minimized by a charge transfer between molecule and substrate involving a large number of C-Pt bonds and a reduction of 6% of the apparent diameter of the C60 molecule.

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