Regensburg 2019 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 54: Magnetic textures: Transport and dynamics III
MA 54.9: Vortrag
Freitag, 5. April 2019, 11:45–12:00, H37
Characterization of MnGe thin films and nanostructures — •David Schroeter1, Nico Steinki1, Thomas Kimmel1, Alexander Fernández Scarioni2, Hans Werner Schumacher2, Stefan Süllow1, and Dirk Menzel1 — 1Institut für Physik der Kondensierten Materie, TU Braunschweig, Germany — 2Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
In the recent years thin films of the B20 compound like MnSi and MnGe became subject of great interest, since the magnetic properties of bulk material are modified due to the dimensional reduction and the uniaxial anisotropy with a proposed stabilized skyrmionic phase [1,2]. Additionally, bulk material MnGe is known for its short periodicity of the magnetic spin structure of roughly 3 nm [2], making MnGe thin films an ideal candidate for the investigation of thin films exhibiting high-skyrmion density.
In this situation, we have set out to investigate the (magneto-)resistivity, Hall effect and magnetization in MnGe thin films and nanostructures. We have analyzed the electronic transport properties in Hall geometries of various sizes to determine the intrinsic behavior and potential finite size effects. We compare the thin film and nanostructure data to experiments performed on nanostructured MnSi thin films and discuss our results in terms of the structural and morphologic characterization of the samples.
[1] A. B. Butenko et al., Phys. Rev. B 82, 052403 (2010). [2] N. Kanazawa et al., Phys Rev. Lett. 106, 156603 (2011).