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MA: Fachverband Magnetismus
MA 19: POSTER Ia
MA 19.13: Poster
Tuesday, March 17, 2015, 09:30–13:00, Poster A
Observation of Binary Vortex Core States in Magnetic Mutlilayers — •Sebastian Wintz1,2, Mi-Young Im2, Anja Banholzer2, Tobias Schneider2, Markus Weigand3, Jörg Raabe4, Roland Mattheis5, Peter Fischer2, Artur Erbe1, and Jürgen Fassbender1 — 1Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — 2Lawrence Berkeley National Laboratory, Berkeley, USA — 3Max-Planck-Institut für Intelligente Systeme, Stuttgart, Germany — 4Paul Scherrer Institut, Villigen, Switzerland — 5Leibniz Institut für Photonische Technologien, Jena, Germany
Topological spin textures such as skyrmions or vortices are attracting significant attention because of their fundamentally interesting magnetostatic and dynamic properties. In particular, magnetic vortices have been studied intensively during the past decade. Such a spin vortex consists of a planar, flux-closing magnetization curl that tilts out of the plane in the central core. Although being relatively small, the core is of crucial importance for the overall vortex structure. For a stacked trilayer geometry, two basic vortex core configurations can be expected, namely parallel (PL) and antiparallel (AP) cores. In the present contribution, we address the direct observation of both PL and AP core configurations in trilayer vortex pairs. Transmission x-ray microscopy is used to directly image the congruent cores in a Co(48)/Ru(0.8)/Ni81Fe19(43) (nm) trilayer stack. Moreover, switching between both configurations in the same vortex pair was achieved by applying high frequency in-plane magnetic fields.