Dresden 2026 – scientific programme

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O: Fachverband Oberflächenphysik

O 83: Organic molecules on inorganic substrates: electronic, optical and other properties III

O 83.4: Talk

Thursday, March 12, 2026, 15:45–16:00, HSZ/0201

Coordination and Molecular Band Dispersion of a 2D Metal-Organic Network — •Martin Anstett¹, Lu Lyu², Jannis Leßmeister¹, Alexander Schmid², Ralf Hemm¹, Vitaliy Feyer³, Yan Yan Grisan Qiu³, Simone Mearini³, Martin Aeschlimann¹, and Benjamin Stadtmüller² — ¹Department of Physics and Research Center OPTIMAS, RPTU University Kaiserslautern-Landau, 67663 Kaiserslautern, Germany — ²Experimentalphysik II, Institute of Physics, University of Augsburg, 86135 Augsburg, Germany — ³Peter Grünberg Institute (PGI-6), Jülich Research Centre, 52428 Jülich, Germany

Two-dimensional metal-organic porous networks (2D-MOPNs) provide a versatile platform exploring emergent electronic and magnetic phenomena at designed surface nanoarchitectures. Here, we prepare a cobalt-coordinated hexaaza-triphenylene-hexacarbonitrile (HATCN) network on Ag(111) to fingerprint the role of metal centers in mediating electronic behaviour. Scanning tunnelling microscopy (STM) reveals an ordered network structure. Photoelectron momentum microscopy identifies a distinct hybrid interface state arising from the Co-mediated coupling with the molecules. These results reveal the microscopic mechanism underlying the role of metal centers in tailoring the electronic structures of 2D-MOPN systems.

Keywords: Momentum Microscopy; Photoemission Electron Microscopy; Scanning Tunneling Microscopy; 2D Metal-Organic Network; ARPES