Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 51: Poster Wednesday: Atomic-Scale Studies of Spins on Surfaces with Scanning Tunneling Microscopy
O 51.6: Poster
Mittwoch, 7. September 2022, 18:00–20:00, P4
Electronic Properties of Dysprosium-based Fe-Porphyrins Metal-Organic Coordination networks on Au(111) and Ag(100) Substrates — •Serim Jeon1,3, Lukas Spree1,2, Corina Urdaniz1,2, Caroline Hommel1,2, Andreas Heinrich1,2, Christoph Wolf1,2, and Luciano Colazzo1,2 — 1Center for Quantum Nanoscience, Institute for Basic Science, Seoul, Republic of Korea — 2Ewha Womans University, Seoul, Republic of Korea — 3Department of Physics, Ewha Womans University
Dy has become the cornerstone for many investigations on lanthanide-directed molecular-magnetism, thanks to its strong magnetic anisotropy. Iron Tetrapyrrole complexes, on the other hand, have shown promise as materials for quantum information processing. Creating a platform that incorporates both might have a way for the realization of multiqubit architectures. The presented study describes electronic properties within a metal-organic network MOF consisting of Iron-Tetrakis-(4-Cyanophenyl) Porphyrin Fe-TCPP and Dysprosium. Fe-TCPP was deposited on Au(111), Ag(100), and MgO/Ag(100). The deposition of Dy induces coordination between the cyano groups and the lanthanide atoms and gives rise to ordering and the formation of large islands of 2D MOF. The lanthanide-based organic network was examined by scanning tunneling microscopy STM on the substrates. Significant shifts in the energy of LUMO of the MOFs were observed via scanning tunneling spectroscopy STS after deposition of Dy. The results were combined with ab initio calculation to further elucidate the electronic structure of the deposited materials.