Berlin 2024 – scientific programme
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MA: Fachverband Magnetismus
MA 20: Poster I
MA 20.33: Poster
Tuesday, March 19, 2024, 16:30–19:00, Poster A
Friedel oscillations induced by three-dimensional topological spin-textures — •Moritz Winterott1,2 and Samir Lounis1,2 — 1Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich & JARA, D-52425 Jülich, Germany — 2Faculty of Physics, University of Duisburg-Essen and CENIDE, 47053 Duisburg, Germany
Far-reaching progress was made in the field of three-dimensional spin-textures, especially their potential application in upcomming information storage devices is moving efficient identification and interaction between them further into the focus.
We examine these exciting questions from a new perspective, inspired by new findings for the two-dimensional skyrmion [1], we find that three-dimensional spin-textures also carry an electric charge that causes Friedel oscillations. These ripples in the charge density trigger exciting questions, for instance all-electrical interaction and identification of these three-dimensional spin-textures.
The non-collinearity of a spin-texture induces a redistribution of the charge density with respect to the collinear ferromagnetic background, which we address by employing a tight-binding model, together with multiple scattering theory. We investigate the impact of spin-orbit coupling, exchange splitting, hopping and position of the d-state with respect to the Fermi energy for different three-dimensional spin-textures of different sizes.
– Project funded by DFG (SPP 2137: LO 1659/8-1).
–[1] M. Bouhassoune & S. Lounis, Nanomaterials 11, 194 (2021).
Keywords: Three-dimensional spin-textures; Friedel oscillations; Hopfion; Chiral bobber; Skyrmion-tube