Journal Article

FZJ-2024-05466

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Kagomerization of transition metal monolayers induced by two-dimensional hexagonal boron nitride

Zhou, H. (Corresponding author)FZJ* ; dos Santos Dias, M.FZJ* ; Zhang, Y. ; Zhao, W. (Corresponding author) ; Lounis, S. (Corresponding author)FZJ*

2024
Nature Publishing Group UK [London]

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Please use a persistent id in citations: doi:10.1038/s41467-024-48973-z  doi:10.34734/FZJ-2024-05466

Abstract: The kagome lattice is an exciting solid state physics platform for the emergence of nontrivial quantum states driven by electronic correlations: topological effects, unconventional superconductivity, charge and spin density waves, and unusual magnetic states such as quantum spin liquids. While kagome lattices have been realized in complex multi-atomic bulk compounds, here we demonstrate from first-principles a process that we dub kagomerization, in which we fabricate a two-dimensional kagome lattice in monolayers of transition metals utilizing an hexagonal boron nitride (h-BN) overlayer. Surprisingly, h-BN induces a large rearrangement of the transition metal atoms supported on a fcc(111) heavy-metal surface. This reconstruction is found to be rather generic for this type of heterostructures and has a profound impact on the underlying magnetic properties, ultimately stabilizing various topological magnetic solitons such as skyrmions and bimerons. Our findings call for a reconsideration of h-BN as merely a passive capping layer, showing its potential for not only reconstructing the atomic structure of the underlying material, e.g. through the kagomerization of magnetic films, but also enabling electronic and magnetic phases that are highly sought for the next generation of device technologies.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)
2. DFG project G:(GEPRIS)443405092 - Konstruktion von 2D van der Waals Magnetismus auf der Nanoskala (443405092) (443405092)
3. DFG project G:(GEPRIS)462676712 - iAFMskyrmionen- Intrinsische antiferromagnetische Skyrmionen aus ersten Prinzipien: Von der Stabilisierung, der Interaktion mit Defekten bis zum effizienten Nachweis (462676712) (462676712)

Appears in the scientific report 2024

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