Regensburg 2019 – scientific programme

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MA: Fachverband Magnetismus

MA 7: Magnetic Textures: Statics and Imaging I

MA 7.4: Talk

Monday, April 1, 2019, 16:00–16:15, H37

Boundary-Driven Twist States in Systems with Broken Spatial Inversion Symmetry — •Karin Everschor-Sitte — Institute of Physics, Johannes Gutenberg-University Mainz

In the quest for miniaturising magnetic devices, the effects of boundaries and surfaces become increasingly important. Bulk properties are modified or even dominated by the properties of the surface of the sample. We derive the general micromagnetic boundary condition for ferromagnetic systems with broken inversion symmetry. Based on these we predict novel boundary-induced twist states in ferromagnetic systems with Dzyaloshinskii-Moriya interaction.[1] We show that these new spin structures can even be purely boundary-induced. Furthermore, they can significantly influence the ferromagnetic bulk state as well as magnetic textures such as domain walls and skyrmions in thin films[2] which might lead to observable effects in transport measurements.

[1] Hals, Everschor-Sitte, PRL 119, 127203 (2017)

[2] Mulkers et al., PRB 98, 064429 (2018)