Beg, Marijan, Pepper, Ryan A., Cortés-Ortuño, David, Atie, Bilal, Bisotti, Marc-Antonio, Downing, Gary Matthew, Kluyver, Thomas, Hovorka, Ondrej and Fangohr, Hans (2019) Stable and manipulable Bloch point. Scientific Reports, 9, 1-8, [7959]. (doi:10.1038/s41598-019-44462-2).
Abstract
The prediction of magnetic skyrmions being used to change the way we store and process data has led to materials with Dzyaloshinskii-Moriya interaction coming into the focus of intensive research. So far, studies have looked mostly at magnetic systems composed of materials with single chirality In a search for potential future spintronic devices, combination of materials with different chirality into a single system may represent an important new avenue for research. Using finite element micromagnetic simulations, we study an FeGe disk with two layers of different chirality. We show that for particular thicknesses of layers, a stable Bloch point emerges at the interface between two layers. In addition, we demonstrate that the system undergoes hysteretic behaviour and that two different types of Bloch point exist. These 'head-to-head' and 'tail-to-tail' Bloch point configurations can, with the application of an external magnetic field, be switched between. Finally, by investigating the time evolution of the magnetisation field, we reveal the creation mechanism of the Bloch point. Our results introduce a stable and manipulable Bloch point to the collection of particle-like state candidates for the development of future spintronic devices.
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- Faculties (pre 2018 reorg) > Faculty of Engineering and the Environment (pre 2018 reorg)
- Faculties (pre 2018 reorg) > Faculty of Engineering and the Environment (pre 2018 reorg) > Aeronautics, Astronautics & Comp. Eng (pre 2018 reorg) > Computational Engineering & Design Group (pre 2018 reorg)
Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Aeronautical and Astronautical Engineering > Aeronautics, Astronautics & Comp. Eng (pre 2018 reorg) > Computational Engineering & Design Group (pre 2018 reorg)
Aeronautical and Astronautical Engineering > Aeronautics, Astronautics & Comp. Eng (pre 2018 reorg) > Computational Engineering & Design Group (pre 2018 reorg) - Current Faculties > Faculty of Engineering and Physical Sciences
- Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Aeronautical and Astronautical Engineering > Computational Engineering and Design Group
Aeronautical and Astronautical Engineering > Computational Engineering and Design Group - Faculties (pre 2018 reorg) > Faculty of Natural and Environmental Sciences (pre 2018 reorg) > Institute for Life Sciences (pre 2018 reorg)
Current Faculties > Faculty of Environmental and Life Sciences > Institute for Life Sciences > Institute for Life Sciences (pre 2018 reorg)
Institute for Life Sciences > Institute for Life Sciences (pre 2018 reorg)
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