Topological magnetism in diluted artificial adatom lattices

Aldarawsheh, Amal; Lounis, Samir

doi:10.1038/s44306-025-00090-3

Journal Article

FZJ-2025-03159

Topological magnetism in diluted artificial adatom lattices

Aldarawsheh, A. (Corresponding author)FZJ* ; Lounis, S. (Corresponding author)FZJ*

2025
[Nature Publishing Group UK] [London]

npj spintronics 3(1), 30 (2025) [10.1038/s44306-025-00090-3]

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Please use a persistent id in citations: doi:10.1038/s44306-025-00090-3 doi:10.34734/FZJ-2025-03159

Abstract: 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, 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. This work, therefore, paves the way for broader exploration of topological superconductivity in conjunction with spintronics applications.

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