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Issue 14, 2005
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Solid C58 films

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A new solid material has been created in ultra high vacuum by utilizing the aggregation process of C58 molecules deposited onto highly oriented pyrolytic graphite from a mass selected low-energy ion beam comprising C58+. Cluster fluxes of up to 3 × 1011 ions s−1 cm−2 with impinging kinetic energies of 6 ± 0.5 eV were typically applied. Growth of the solid C58 phase proceeds according to the cluster-aggregation-based Volmer–Weber scenario where initially ramified 2D islands transform into 3D pyramid-like structures at higher coverages. The C58 films created exhibit much higher thermal stability than the C60 solid phase. Sublimation of C58 sets in at a temperature of 700 K. Ultraviolet photoionization spectra (He I, 21.2 eV) yield a molecular ionization potential in the range between 6.6 and 7 eV. Density functional and Hartree–Fock theories suggest that the formation of C58 dimers and higher multimers upon deposition/aggregation gives rise to the high thermal stability and unique electronic properties of this material.

Graphical abstract: Solid C58 films

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Article information

11 Mar 2005
07 Jun 2005
First published
16 Jun 2005

Phys. Chem. Chem. Phys., 2005,7, 2816-2820
Article type

Solid C58 films

A. Böttcher, P. Weis, Stefan-S. Jester, D. Löffler, A. Bihlmeier, W. Klopper and M. M. Kappes, Phys. Chem. Chem. Phys., 2005, 7, 2816
DOI: 10.1039/B505703E

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