Berlin 2024 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
O: Fachverband Oberflächenphysik
O 15: Organic Molecules on Inorganic Substrates II: Electronic, Optical and other Properties
O 15.9: Talk
Monday, March 18, 2024, 17:00–17:15, MA 043
Momentum-sensitive characterization of hybrid states in metal-organic coordination networks — •Simone Mearini1, Daniel Baranowski1, Dominik Brandstetter2, Andreas Windischbacher2, Iulia Cojocariu3, Luca Schio4, Luca Floreano4, Pierluigi Gargiani5, Manuel Valvidares5, Peter Puschnig2, Vitaliy Feyer1,6, and Claus M. Schneider1,6 — 1Forschungszentrum Jülich, Germany — 2University of Graz, Austria — 3University of Trieste, Italy — 4CNR-IOM, Trieste, Italy — 5ALBA Synchrotron, Barcelona, Spain — 6Universität Duisburg-Essen, Germany
The electronic and magnetic properties of metal-organic coordination networks (MOCN) are to a great extent defined by the nature of the metal core and the coordinating organic ligand. To probe the new electronic states emerging due to the metal-organic bond formation, we fabricate MOCNs via co-deposition of transition metals (TMs) and benzene derivatives onto metallic substrates and apply a multi-technique approach supported by theoretical calculations to comprehensively study the local electronic structure of MOCNs. Using ARPES, we observed the appearance of energy-dispersive electronic states, attributed to the interaction between the 3d states of the TM and the ligand π molecular orbitals. This interaction stabilizes specific electronic and spin configurations of the TM ion, as determined by XPS and XMCD experiments. Finally, experimental and theoretical evidences fully support the crucial role held by the choice of the TM in the control of MOCNs properties.
Keywords: metal-organic; electron spectroscopy; self-assembly