Berlin 2018 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 6: Graphene: Electronic properties, structure and substrate interaction I (joint session O/TT)
O 6.11: Vortrag
Montag, 12. März 2018, 13:00–13:15, MA 043
Electronic and geometric structure of PTCDA films adsorbed on Graphene passivated Ni(111) — •Dominik Jungkenn1, Johannes Seidel1, Florian Haag1,2, Leah L. Kelly1, Mirko Cinchetti3, Benjamin Stadtmüller1,2, and Martin Aeschlimann1 — 1Department of Physics and Research Center OPTIMAS, Erwin-Schrödinger-Str 46, 67663 Kaiserslautern — 2Graduate School of Excellence Materials Science in Mainz, Erwin Schroedinger Straße 46, 67663 Kaiserslautern — 3Experimentelle Physik VI, Technische Universität Dortmund, 44221 Dortmund
Organic molecules are highly intriguing materials for spintronics due to their wide range of functionalities. However, to take full advantage of these functionalities, ferromagnetic surfaces have to be passivated , either by an organic buffer layer or by an inert 2D material [1]. Along these lines, we have investigated the geometric and electronic structure as well as the hot electron dynamics of a PTCDA monolayer on a Graphene (Gr) passivated Ni(111) surface. We find the formation of long-range ordered PTCDA monolayer films on Gr/Ni(111) resembling the herringbone structure of PTCDA/Ag(111). The frontier molecular states reveal the orbital emission pattern of unperturbed PTCDA molecules suggesting, as expected, a weak coupling of the molecular layer to the Graphene sheet. [1] Cinchetti et al. Nat. Mater. 16, 507 (2017)