SKM 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 35: Skyrmions III
MA 35.7: Vortrag
Donnerstag, 30. März 2023, 11:15–11:30, HSZ 04
Non-synthetic antiferromagnetic multi-meronic Néel spin-textures in thin films — •Amal Aldarawsheh1,2, Moritz Sallermann1,3,4, Muayad Abusaa5, and Samir Lounis1,2 — 1Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, D-52425 Jülich, Germany — 2Faculty of Physics, University of Duisburg-Essen and CENIDE, 47053 Duisburg, Germany — 3RWTH Aachen University, 52056 Aachen, Germany — 4Science Institute and Faculty of Physical Sciences, University of Iceland, VR-III, 107 Reykjavík, Iceland — 5Arab American University, Jenin, Palestine
The realization of topological antiferromagnetic (AFM) solitons in real materials is a major goal towards their use in information technology. In contrast to their ferromagnetic version, they are expected to be insensitive to the Hall effect and dipolar interactions. Here, based on density functional theory in conjunction with atomistic spin dynamics, we predict the emergence in a triangular lattice of complex Néel AFM vortex-antivortex structures in transition metallic thin films interfaced with Ir and Pd layers. These topological structures are intrinsic, i.e. they form in a single AFM material, but are different from the recently predicted intrinsic AFM skyrmions [1]. They can carry various topological charges and can combine in hexameronic or dodecameronic textures, which can show enhanced stability with respect to external magnetic field depending on the electronic nature of the interfaces. [1] A. Aldarawsheh et al., ArXiv:2202.12090 (2022). Work funded by the PGSB (BMBF-01DH16027) and DFG (SPP 2137; LO 1659/8-1).