Berlin 2018 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 42: Poster: Organic-Inorganic Hybrid Systems and Organic Films

O 42.7: Poster

Dienstag, 13. März 2018, 18:15–20:30, Poster A

STM investigation of organic molecules on a Dy-Ag surface alloy — •Sina Mousavion, Johannes Seidel, Lu Lyu, Benjamin Stadtmüller, and Martin Aeschlimann — Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany

One of the great goals in the field of molecular adsorbates is to control the electronic and geometric structure at metal-organic interfaces. While most studies so far focused on modifications of the organic film to tune the interfacial properties, we have started to tailor metal-organic interfaces by surface alloying [1].

Here, we extend this approach to new surface alloy consisting of silver and lanthanide metal, Dysprosium grown on a silver crystal . The lateral order of the bare Dy1Ag2 surface alloy is characterized by LEED and STM and reveals a reveals a Sqrt(3)xSqrt(3) structure with an additional Moiré pattern. Subsequently, the structure formation and lateral order of PTCDA and the single molecular magnet Sc3N@C80 are investigated. We find a clear correlation between the local arrangement of the molecular adsorbates and the Moiré pattern of the surface alloy.

[1] Phys. Rev. Lett. 117 096805 (2016)