SFB 1238 | February 25, 14:30
Topological magnetism in 2D materials
The discovery of two-dimensional (2D) van der Waals (vdW) magnetic materials and their heterostructures has revolutionized the exploration of emergent phenomena at the intersection of magnetism, spintronics, and topology, with significant implications for information technology. In this talk, I will show how the stackability of vdW layers enables the creation and electrical control of novel topological magnetic states, such as antiferromagnetic meronic textures and ferromagnetic skyrmions in CrTe2-based heterostructures [1,2,3]. Additionally, I introduce 'kagomerization,' a transformative process that generates 2D kagome lattices within transition metal monolayers via hexagonal boron nitride (h-BN) overlayers [4], dramatically altering magnetic properties and stabilizing topological solitons like skyrmions and bimerons. Lastly, I explore the interaction of 2D excitons—critical for photonic and optoelectronic applications—with topological magnetism, unveiling new possibilities for excitons transport and stabilization.
References
[1] N. Abuawwad, M. dos Santos Dias, H. Abusara, S. Lounis, J. Phys.; Cond. Matt. 34, 454001 (2022)
[2] N. Abuawwad, M. dos Santos Dias, H. Abusara, S. Lounis, Phys. Rev. B 108, 094409 (2023)
[3] N. Abuawwad, M. dos Santos Dias, H. Abusara, S. Lounis, npj Spintronics 2, 10 (2024)
[4] H. Zhou, M. dos Santos Dias, Y. Zhang, W. Zhao, S. Lounis, Nature Communications 15, 4854 (2024)
Martin-Luther-Universität Halle-Wittenberg
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Contact: Jeison Fischer / Matteo