Regensburg 2019 – scientific programme
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MA: Fachverband Magnetismus
MA 34: Magnetic textures: Transport and dynamics II
MA 34.14: Talk
Wednesday, April 3, 2019, 18:45–19:00, H37
Magnetotransport Fingerprints of Bloch Points in Thin Films — •Matthias Redies1, Fabian Lux1, Jan-Phillipp Hanke2, Patrick Buhl1, Gideon Müller1,3, Nikolai Kiselev1, Stefan Blügel1, and Yuriy Mokrousov1,2 — 1Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany — 2Institute of Physics, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany — 3Science Institute of the University of Iceland, VR-III, 107 Reykjavik, Iceland
While chiral magnetic skyrmions have attracted much attention in recent years, a new type of thin-film chiral particle − of a chiral bobber − has recently been theoretically predicted and experimentally observed [1]. On the basis of theoretical arguments, here we present a clear way to use chiral bobbers for the purposes of future spintronics by revealing that these novel chiral states have inherent transport fingerprints that allow their unique electrical detection in systems of different types of chiral states [2]. We show that bobbers’ unique transport and orbital features are rooted in the non-trivial magnetization distribution near the Bloch points, and show that the fine-tuning of the Bloch point topology can be used to drastically increase the emergent response properties of chiral bobbers to external fields, which holds great potential for the development of chiral dynamics and cognitive computing.
[1] Filipp N Rybakov et al, 2016 New J. Phys. 18 045002
[2] Matthias Redies et al, arXiv:1811.01584