Regensburg 2019 – scientific programme
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MA: Fachverband Magnetismus
MA 15: Magnetism Poster A
MA 15.7: Poster
Tuesday, April 2, 2019, 10:00–13:00, Poster E
Production of Inplane Skyrmion — •Venkata Krishna Bharadwaj1, Kyoung-Whan Kim2, and Karin Everschor- Sitte1 — 1Johannes Gutenberg-University, Mainz — 2Center for Spintronics, Korea Institute of Science and Technology, South Korea
Magnetic skyrmions are topological magnetic whirls with a trivial magnetization configuration at their boundary. In thin films, most studies consider skyrmions with an out-of-plane easy axis anisotropy, where the magnetization at both the skyrmion centre and boundary is pointing perpendicular to the plane. In this work we analyze skyrmions in inplane magnets, [1] which have recently been observed [2,3]. We do a comparative study of their existence, stability and their properties to those of out-of-plane skyrmions. While in the absence of stray fields a global spin rotation maps an inplane skyrmion to its out-of-plane counterpart exactly, the presence of magnetostatic interactions changes the size and profile of the skyrmion. Furthermore, as the rotational symmetry around the axis perpendicular to the plane is broken, we study the skyrmion dynamics as a function of the relative angle between current and inplane magnetization direction. We also show by means of micromagnetic simulations that the 'blowing bubbles' technique, i.e. the creation of skyrmions due to current flow through constricted geometries, works for inplane skyrmions similar to their out-of-plane analogues [4]. [1] G. Chen et al., Nat. Commun. 8, 15302 (2017), [2] S. A. Meynell, et al., Physical Review B 96, 054402 (2017), [3] T. Yokouchi, et al., Journal of the Physical Society of Japan 84, 104708 (2015) [4] W.Jiang et al., Science 349, 283 (2015)