Dresden 2017 – scientific programme

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MA: Fachverband Magnetismus

MA 22: Surface Magnetism (Joint Session with O)

MA 22.2: Talk

Tuesday, March 21, 2017, 10:15–10:30, HSZ 401

Measurement of a Nano-Skyrmionic lattice via Magnetic Exchange Force Microscopy — •Josef Grenz, Alexander Schwarz, and Roland Wiesendanger — Institute of Nanostructure and Solid State Physics, University of Hamburg, Jungiusstraße 11A, 20355 Hamburg, Germany

Skyrmions are complex spin textures, which occur in crystals without inversion symmetry due to the Dzyaloshinskii-Moriya interaction. Recently, the monolayer of Fe on a Ir(111) surface attracted a lot of interest, because it exhibits an interface induced Skyrmionic state with a lattice constant of 1 nm [1]. Here, we study the Fe/Ir(111) system utilizing magnetic exchange force microscopy (MExFM). This method has been employed previously to investigate antiferromagnetic structures with atomic resolution [2-4]. We demonstrate that MExFM is able to resolve the arrangement of atoms and the spin texture simultaneously on a non-collinear magnetic structure. Such image data allow to straightforwardly identify the (in-) commensurability between atomic and magnetic structure.

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R. Schmidt, et al., Nano Lett. 9, 200 (2009).
F. Pielmeier, et al., Phys. Rev. Lett. 110, 266101 (2013).