Dresden 2020 – scientific programme
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MA: Fachverband Magnetismus
MA 56: Surface Magnetism I (joint session O/MA)
MA 56.5: Talk
Thursday, March 19, 2020, 16:00–16:15, WIL A317
Emergence of on-surface molecular magnetism by non-magnetic impurity doping — •Roberto Robles1, We-Hyo Soe2, Carlos Manzano3, Nicolás Lorente1,4, and Christian Joachim2 — 1Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), San Sebastián, Spain — 2Centre d’Elaboration de Matériaux et d’Études Structurales (CEMES), CNRS, Université de Toulouse, Toulouse, France — 3Institute of Material Research and Engineering (IMRE), Agency for Science, Technology and Engineering (A*STAR), Singapore — 4Donostia International Physics Center (DIPC), San Sebastián, Spain
Using a low-temperature scanning tunneling microscope (LT-STM) combined with density functional theory (DFT) calculations we show how non-magnetic organic molecules on a metallic surface can become magnetic by doping them with light metal atoms. By single atom/molecule manipulation we construct a complex formed by two aluminum atoms doping a phenanthrazine molecule on an Au(111) surface. We use the Kondo effect to characterize the magnetic moment and confirm the emergence of a localized magnetic moment in the 2(Al)-phenanthrazine complex. DFT calculations allow us to describe the electronic and magnetic properties of the new system. This procedure opens a new way to design light magnetic molecular complexes without the need of transition metal atoms.