Journal Article

FZJ-2024-05471

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electrical engineering of topological magnetism in two-dimensional heterobilayers

Abuawwad, N. (Corresponding author)FZJ* ; dos Santos Dias, M.FZJ* ; Abusara, H. ; 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/s44306-024-00015-6  doi:10.34734/FZJ-2024-05471

Abstract: The emergence of topological magnetism in two-dimensional (2D) van der Waals (vdW) magnetic materials and their heterostructures is an essential ingredient for next-generation information technology devices. Here, we demonstrate the all-electric switching of the topological nature of individual magnetic objects emerging in 2D vdW heterobilayers. We show from the first principles that an external electric field modifies the vdW gap between CrTe2 and (Rh, Ti)Te2 layers and alters the underlying magnetic interactions. This enables switching between ferromagnetic skyrmions and meron pairs in the CrTe2/RhTe2 heterobilayer while it enhances the stability of frustrated antiferromagnetic merons in the CrTe2/TiTe2 heterobilayer. We envision that the electrical engineering of distinct topological magnetic solitons in a single device could pave the way for novel energy-efficient mechanisms to store and transmit information with applications in spintronics.

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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. Pilotprojekt zur Entwicklung eines palästinensisch-deutschen Forschungs- und Promotionsprogramms 'Palestinian-German Science Bridge' (01DH16027) (01DH16027)
3. DFG project G:(GEPRIS)443405092 - Konstruktion von 2D van der Waals Magnetismus auf der Nanoskala (443405092) (443405092)
4. 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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