Regensburg 2025 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 6: Skyrmions I
MA 6.9: Vortrag
Montag, 17. März 2025, 17:30–17:45, H16
Topological magnetism in diluted artificial adatom lattices — •Amal Aldarawsheh1,2 and Samir Lounis1,2 — 1Peter Grünberg Institut and Institute for Advanced Simulations, Forschungszentrum Jülich & JARA, 52425 Jülich, Germany — 2aculty of Physics, University of Duisburg-Essen and CENIDE, 47053 Duisburg, Germany
The ability to control matter at the atomic scale has revolutionized our understanding of the physical world, opening doors to unprecedented technological advancements. Quantum technology, which harnesses the unique principles of quantum mechanics, enables us to construct and manipulate atomic structures with extraordinary precision. Here[1], we propose a bottom-up approach to create topological magnetic textures in diluted adatom lattices on the Nb(110) surface. By fine-tuning adatom spacing, previously inaccessible magnetic phases can emerge. Our findings reveal that interactions between magnetic adatoms, mediated by the Nb substrate, foster the formation of unique topological spin textures, such as skyrmions and anti-skyrmions, both ferromagnetic and antiferromagnetic. Since Nb can be superconducting, our findings present a novel platform with valuable insights into the interplay between topological magnetism and superconductivity, paving the way for broader exploration of topological superconductivity in conjunction with spintronics applications.
[1] A. Aldarawsheh et al., In preparation. Work funded by the PGSB (BMBF-01DH16027)and DFG (SPP 2137; LO 1659/8-1)
Keywords: Ferromagnetic skyrmions; DFT, topological magnetism; Diluted lattices; Antiferromagnetic skyrmions; Magnetism