Berlin 2024 – scientific programme
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MA: Fachverband Magnetismus
MA 37: Skyrmions III
MA 37.4: Talk
Thursday, March 21, 2024, 10:15–10:30, EB 301
Intrinsic and extrinsic skyrmion Hall deflections of intrinsic AFM skyrmions — •Amal aldarawsheh1,2, Moritz Salermann1,3,4, Muayad Abusaa5, and Samir Lounis1,2 — 1Peter Grünberg Institut and Institute for Advanced Simulations, Forschungszentrum Jülich & JARA, 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
Antiferromagnetic (AFM) skyrmions, comprised of two antiferromagnetically coupled ferromagnetic (FM) solitons, are promising for spintronic racetrack memories due to their predicted zero skyrmion Hall effect. Our ab-initio study explores the dynamic behavior of intrinsic single and interchained AFM skyrmions in the CrPdFe/Ir(111) system [1,2] driven by a spin torque, all based on atomistic spin dynamics simulations. Surprisingly, we unveil an intrinsic and extrinsic skyrmion Hall and uncover that FM skyrmions in the underlying Fe layer act as effective traps for AFM skyrmions, confining and reducing their velocity. These findings hold significant promise for spintronic applications, advancing our understanding of AFM and FM skyrmion interactions in heterostructures. [1] A. Aldarawsheh et al., Nat. Commun.13, 7369 (2022). [2] A. Aldarawsheh et al., Front. Physics. 11, 335 (2023). Work funded by the PGSB (BMBF-01DH16027)and DFG (SPP 2137; LO 1659/8-1)
Keywords: AFM Skyrmions; Spin torque; Skyrmion Hall effect