SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 26: Non-Skyrmionic Magnetic Textures II
MA 26.3: Vortrag
Mittwoch, 29. März 2023, 10:15–10:30, HSZ 401
Helitronics for unconventional computing — •Nicolai Timon Bechler1 and Jan Masell1,2 — 1Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany — 2RIKEN CEMS, Wako, Japan
Non-trivial magnetic structures have been proposed to be a promising route to unconventional computing. The interplay between magnetic stiffness and Dzyaloshinskii-Moriya interaction can stabilize a helical order of the magnetisation which is often discarded as trivial. However, recent studies have shown that the orientation of these helical magnetisation structures can be manipulated by strong enough magnetic fields [1] and spin currents [2] which revealed their unexpectedly complex dynamics. Using micromagnetic simulations, we investigate novel magnetic memory devices such as MRAM-cells and memristors which use the orientation of the helical phase as an order parameter, dubbed helitronics. We propose a way to read-out said devices using the anisotropic magneto resistance and point out their use for unconventional computing purposes.
[1] A. Bauer, A. Chacon, M. Wagner, M. Halder, R. Georgii, A. Rosch, C. Pfleiderer, and M. Garst, Phys. Rev. B 95, 024429 (2017). [2] J. Masell, X. Z. Yu, N. Kanazawa, Y. Tokura, and N. Nagaosa, Phys. Rev. B 102, 180402(R) (2020).