SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 21: Spin-Dependent Phenomena in 2D

MA 21.1: Vortrag

Dienstag, 28. März 2023, 15:00–15:15, HSZ 403

Material design of topological magnetism in 2D heterostructures — •Nihad AbuAwwad^1,2, Manuel dos Santos Dias³, and Samir Lounis^1,2 — ¹Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich & JARA, 52425 Jülich, Germany — ²Faculty of Physics, University of Duisburg-Essen, 47053 Duisburg, Germany — ³Scientific Computing Department, STFC Daresbury Laboratory, Warrington WA4 4AD, United Kingdom

The discovery of two-dimensional (2D) van der Waals magnetic materials and their heterostructures provided an exciting platform for emerging phenomena with intriguing implications in information technology. CrTe₂ is a particular example that hosts complex magnetism strongly intertwined with its crystal structures [1,2]. Here, based on a multiscale modelling approach that combines first-principles calculations and a Heisenberg model, we demonstrate that interfacing this 2D layer with various Te-based layers hosting heavy or light elements enables the control of the Dzyaloshinskii-Moriya interaction and magnetic anisotropy energy of the whole heterostructure, and thereby the emergence of new magnetic phases of matter, which are of topological nature such as skyrmions and merons.

–Work funded by the Palestinian-German Science Bridge (BMBF–01DH16027) and Priority Programme SPP 2244 2D Materials Physics of van der Waals Heterostructures of the DFG (project LO 1659/7-1). [1] AbuAwwad et al., J. Phys.: Condens. Matter 34, 454001(2022). [2] Xian et al., Nat. Commun. 13, 257 (2022).