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Silvia Karthäuser   Dr.  Other 
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Silvia Karthäuser published an article in January 2019.
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M. Paßens

1 shared publications

Peter Grünberg Institut (PGI-7) and JARA-FIT, Forschungszentrum Jülich GmbH, Jülich 52425, Germany

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Distribution of Articles published per year 

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Publications
Article 0 Reads 1 Citation Rotational switches in the two-dimensional fullerene quasicrystal M. Paßens, S. Karthäuser Published: 01 January 2019
Acta Crystallographica Section A Foundations and Advances, doi: 10.1107/S2053273318015681
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
Local potential differences between the 36 and 32.4.3.4 vertex configurations are identified within a two-dimensional dodecagonal fullerene monolayer. In a local area of the 8/3 approximant, rotational switching fullerenes on 36 vertex sites are revealed by scanning tunneling microscopy.
Article 2 Reads 3 Citations Enhanced fullerene–Au(111) coupling in (2√3 × 2√3)R30° superstructures with intermolecular interactions Michael Paßens, Rainer Waser, Silvia Karthäuser, Fabian Paul... Published: 29 June 2015
Beilstein Journal of Nanotechnology, doi: 10.3762/bjnano.6.147
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
Disordered and uniform (2√3 × 2√3)R30° superstructures of fullerenes on the Au(111) surface have been studied using scanning tunneling microscopy and spectroscopy. It is shown that the deposition and growth process of a fullerene monolayer on the Au(111) surface determine the resulting superstructure. The supply of thermal energy is of importance for the activation of a Au vacancy forming process and thus, one criterion for the selection of the respective superstructure. However, here it is depicted that a vacancy–adatom pair can be formed even at room temperature. This latter process results in C60 molecules that appear slightly more bright in scanning tunnelling microscopy images and are identified in disordered (2√3 x 2√3)R30° superstructures based on a detailed structure analysis. In addition, these slightly more bright C60 molecules form uniform (2√3 x 2√3)R30° superstructures, which exhibit intermolecular interactions, likely mediated by Au adatoms. Thus, vacancy–adatom pairs forming at room temperature directly affect the resulting C60 superstructure. Differential conductivity spectra reveal a lifting of the degeneracy of the LUMO and LUMO+1 orbitals in the uniform (2√3 x 2√3)R30° superstructure and in addition, hybrid fullerene–Au(111) surface states suggest partly covalent interactions.
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