Berlin 2024 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
MA: Fachverband Magnetismus
MA 30: Skyrmions II
MA 30.5: Talk
Wednesday, March 20, 2024, 16:15–16:30, EB 301
Stability of nonlocal magnetic solitons in an all-magnetic van der Waals heterostructure — •Moritz A. Goerzen1, Dongzhe Li2, Soumyajyoti Haldar1, Tim Drevelow1, and Stefan Heinze1,3 — 1ITAP, University of Kiel, Germany — 2CEMES, Université de Toulouse, CNRS, France — 3KiNSIS, University of Kiel, Germany
Stabilizing and controlling multiple topological spin states in atomically thin van der Waals (vdW) materials gained tremendous attention due to high tunability, enhanced functionality, and miniaturization. Here, using first-principles and atomistic spin simulations [1], we investigate the existence of multiple topological spin textures in an all-magnetic vdW heterostructure Fe3GeTe2/Cr2Ge2Te6 (FGT/CGT). These states obey opposite rotational senses at the two sides of the FGT/CGT interface, which is in agreement with recent experimental measurements [2].
Magnetic skyrmions at the FGT layer and bimerons at the CGT layer persist in the heterostructure with zero magnetic field while the later undergo bimeron-skyrmion transformation if a field is applied. Furthermore, we show evidence of nonlocal spatial expanse, which makes them subject to finite-size effects. We analyze how this affects the stability of states in confined materials.
[1] Li et al., Phys. Nano Lett. 22, 7706-7713 (2022)
[2] Wu et al., Adv. Mater. 34, 2110583 (2022)
Keywords: bimeron; 2d magnet; spin dynamic simulation; GNEB