Regensburg 2019 – scientific programme
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O: Fachverband Oberflächenphysik
O 38: Organic Molecules on Inorganic Substrates II: Electronic Properties and Charge Transfer
O 38.4: Talk
Tuesday, April 2, 2019, 14:45–15:00, H24
Spin- and angle-resolved photoemission study of heteromolecular bilayer films on ferromagnets — •Benito Arnoldi1, Stefan Lach1, Robert Ranecki1, Johannes Stöckl1, Mirko Cinchetti2, Benjamin Stadtmüller1, Christiane Ziegler1, and Martin Aeschlimann1 — 1Department of Physics, University of Kaiserslautern, Erwin-Schroedinger-Strasse 46, 67663 Kaiserslautern, Germany — 2Experimentelle Physik VI, Technische Universität Dortmund, Otto-Hahn-Str. 4, 44221 Dortmund, Germany
Heteromolecular bilayer films on ferromagnetic surfaces are highly intriguing molecular assembles to study and control the spin-dependent electronic properties of these so called spinterfaces. In these systems, the first molecular layer is strongly hybridized with the surface while the molecular character of the second layer molecules is largely preserved.
Here, we focus on such a heteromolecular bilayer film consisting of C60 grown on the CuPc/Co(001) interface. The spin dependent electronic structure of this adsorbate system is investigated by spin- and angle resolved photoemission. Using a dedicated data analysis scheme, we are able to distinguish the formation of hybrid interface states at the CuPc/Co interface as well as charge transfer induced interface states at the heteromolecular interfaces from elastic scattering effects of photoelectrons in the molecular stack. Our results will be discussed in the light of local scanning tunnel spectroscopy data recorded for the same material system. This allows a direct assignment of spectroscopic signals to the different parts of the heteromolecular bilayer film.