Regensburg 2019 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 44: Poster Tuesday: Spins and Magnetism

O 44.4: Poster

Dienstag, 2. April 2019, 18:00–20:00, Poster D

Element-Specific Magnetism of Rare-Earth-Cyclooctatetraene Nanowires — •Alexander Herman1, Stefan Kraus2, Nico Rothenbach1, Katharina Ollefs1, Jan Dreiser3, Thomas Michely2, and Heiko Wende11Universität Duisburg-Essen and CENIDE, Lotharstr. 1, 47057 Duisburg — 2II. Physikalisches Institut, Universität zu Köln, Zülpicher Strasse 77, 50937 Köln — 3Swiss Light Source, Paul Scherrer Institut, Forschungsstrasse 111, CH-5232 Villigen

The analysis of the magnetic coupling and the magnetic anisotropy of localized 4f magnetic moments connected via organic ligands in molecular networks is a highly topical field of research owing to potential applications in organic spintronics. Our on-surface synthesis method allows us to synthesize sandwich-molecular nanowires that consist of alternating ring-like cyclooctatetraene (Cot) molecules and varying rare-earth ions as well as other phases of rare-earth-Cot compounds. The electronic and magnetic properties of these compounds were studied by XAS, XMCD and XLD accompanied by a theoretical approach based on multiplet calculations. The systems show, depending not only on the ligand, but also on the underlying substrate, varying magnetic coupling and magnetic anisotropies. We acknowledge financial support by DFG through the project WE 2623/17-1.

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