SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 47: Skyrmions IV
MA 47.9: Vortrag
Freitag, 31. März 2023, 11:45–12:00, HSZ 04
Modeling stray fields using Bi-axial anisotropy in in-inplane magnets — •Venkata Krishna Bharadwaj1, Karin Everschor-Sitte2, Jairo Sinova1,3, and Ricardo Zarzuela1 — 1Johannes Gutenberg-University, Mainz — 2Faculty of Physics, University of Duisburg-Essen, D-47057 Duisburg, Germany — 3Institute of Physics Academy of Sciences of the Czech Republic, Cukrovarnická 10, 162 00 Praha 6, Czech Republic
Recently [1,2], magnetic bimreons, skyrmion analogs in in-plane magnetized films have gained interest due to their stark difference in current-driven dynamics with respect to Neel skyrmions showing uni-directional motion with SOT-driven torques. The other technological advantage is that they can be densely stacked without worrying about stray fields between the layers. However, the stray fields need to be handled carefully as they are not trivial as in out-of-plane films. In this work, we study the bi-axial anisotropy to model the stray field in in-plane magnetized films. We provide the phase diagram and look at the deformations of spin spiral phases and the presence of titled fields. Finally, we study the shape deformation of skyrmions due to stary fields and the effects in current-driven dynamics. [1] R. Zarzuela et al., Physical Review B 101, 054405 (2020), [2] B. Göbel, et al., Phys. Rev. B 99, 060407(R) (2019).