SKM 2023 – scientific programme
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MA: Fachverband Magnetismus
MA 12: Skyrmions II
MA 12.2: Talk
Tuesday, March 28, 2023, 09:45–10:00, HSZ 02
Magnetic Néel Domain Walls and Skyrmions in La0.7Sr0.3Mn1-xRuxO3 Multilayers — •Arsha Thampi1, Jörg Schöpf2, Daniel Wolf1, Ionela Lindfors-Vrejoiu2, and Axel Lubk1,3 — 1Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstraße 20, 01069 Dresden, Germany — 2Physics Institute, University of Cologne, 50937 Cologne, Germany — 3Institute of Solid State and Materials Physics, TU Dresden, 01069 Dresden, Germany
Magnetic domain walls (DWs) in ferromagnetic thin films exhibit a rich variety of configurations and corresponding dynamic properties depending on parameters like film thickness, defect density, magnetocrystalline anisotropy, exchange stiffness, and Dzyaloshinskii*Moriya interaction (DMI). Here, we study epitaxial ferromagnetic multilayer devices of La0.7Sr0.3Mn1-xRuxO3, consisting 8 nm thick manganite layers with varying Ru/Mn content, in order to engineer symmetric and antisymmetric exchange interaction and magnetic anisotropy across the multilayer stack. We particularly map the DW states as a function of temperature and external out-of-plane magnetic fields employing high-resolution magnetic imaging in the Transmission Electron Microscopy (TEM). Lorentz TEM and transport of intensity phase reconstruction is used to characterize the magnetic domains and DWs formed as a function of temperature and perpendicular magnetic field strength. High-resolution magnetic field mapping of La0.7Sr0.3Mn1-xRuxO3 multilayer system demonstrates the possibility to engineer chiral Néel domain walls and skyrmions.