Berlin 2024 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 15: Organic Molecules on Inorganic Substrates II: Electronic, Optical and other Properties
O 15.1: Vortrag
Montag, 18. März 2024, 15:00–15:15, MA 043
Investigation of the electronic structure of solvent based multispin bearing metallacrown CuCu4 molecules on a Au(111) surface — •Benedikt Baumann1, Robert Ranecki1, Lukas Bolz1, Ellen Brennfleck1, Stefan Hornig1, Yves Kurek1, Frederik Pütz1, Philip Schreyer1, Paul Steuernagel1, Dominic Stephan1, Robert Wendels1, Stefan Lach1, Eva Rentschler2, and Christiane Ziegler1 — 1RPTU Kaiserslautern - Landau and Research Center OPTIMAS, Erwin-Schrödinger-Str. 56, 67663 Kaiserslautern, Germany — 2Inst. of Inorganic and Analytical Chemistry, Johannes Gutenberg University Mainz, Germany
Transition metal complexes with exchange-coupled open-shell metal ions have attracted attention in the last decade. In such systems, spin relaxation time enhancement can provide a route to nanoscale spintronic devices. Because of their mostly low thermal stability, such molecules must be prepared by solvent based methods to investigate the electronic structure on metallic substrates,. We will demonstrate different UHV compatible preparation setups to prepare ultra-thin layers of the solvent based metallacrown complex CuCu4 [1] on a Au(111) surface. Furthermore, we show how a multi-method approach of vibrational spectroscopy and complete photoelectron spectroscopy (X-ray, UV, and inverse photoemission) can be used to demonstrate the integrity of the molecules during the adsorption process as well as the evolution of the electronic structure of this molecule in comparison with theoretical single molecule calculations.
[1] P. Happ et al. Phys. Rev. B 93, 174404 (2016)
Keywords: Electrospray Deposition; Liquid Jet Deposition; Hybrid interface states; Metallacrowns; UPS/IPES