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O: Fachverband Oberflächenphysik
O 45: Poster Spins on Surfaces at the Atomic Scale
O 45.16: Poster
Dienstag, 18. März 2025, 18:00–20:00, P2
Multiplet calculations of magnetic atoms on a hexagonal insulator — •Julian Zeitler1, Johannes Schust1, Henrik Lichtl1, Lukas Arnhold1, Sebastian Loth1,2, and Susanne Baumann1 — 1University of Stuttgart, Institute for Functional Matter and Quantum Technologies, Stuttgart, Germany — 2Center for Integrated Quantum Science and Technology (IQST), University of Stuttgart, Stuttgart, Germany
Novel designs for computational devices may offer improvements in energy efficiency, especially if they include a combination of storing and processing parts in one unit. In such designs, the building blocks should enable slow and fast dynamics, and allow for precise control over the system. Atomic-scale frustrated spin systems combined with atom manipulation capabilities of a scanning tunneling microscope (STM) are a promising prospect in this field. Magnetic atoms placed on a thin hexagonal insulator, such as zinc oxide (ZnO), can potentially be used to realize such systems. As the magnetic atoms interact with their substrate, it is important to understand the substrate's influence on the atoms' characteristics. We use multiplet calculations to study the interactions of individual magnetic atoms with the ZnO substrate. With these calculations, we can make predictions about the magnetic characteristics of different atoms placed on top of this hexagonal substrate, in particular their orbital and spin moments. We are particularly interested in finding atomic-scale systems that, combined with atom manipulation capabilities of an STM, allow for further advancements in the field of atomic-scale frustrated spin systems.
Keywords: multiplet calculations; spins on surfaces; nanomagnets; scanning tunneling microscopy