SKM 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 23: Poster Magnetism I

MA 23.3: Poster

Dienstag, 28. März 2023, 17:00–19:00, P1

Time-Multiplexed Reservoir Computing with Skyrmions — •Grischa Beneke¹, Thomas Winkler¹, Maarten A. Brems¹, Klaus Raab¹, Fabian Kammerbauer¹, Johan H. Mentink², and Mathias Kläui¹ — ¹Institut für Physik, Johannes Gutenberg-Universität Mainz, Germany — ²Institute for Molecules and Materials, Radboud University, The Netherlands

Reservoir computing (RC) is a key method for significantly reducing the computational effort of complex tasks like pattern recognition [1]. Magnetic skyrmions, topological particle-like spin textures, are very promising candidates for RC systems given their non-linear interactions and a multitude of established mechanisms for skyrmion manipulation. By exploiting the thermally activated diffusive motion of skyrmions [2] and an automatic reset mechanism enabled by the repulsion of skyrmions form the boundaries of the magnetic materials, we have previously realized spatially multiplexed RC using a single skyrmion [3]. Here, we employ time-resolved inputs, exploiting the electrically gated skyrmion motion and use the time-dependent state of our device as an output mechanism [4]. We experimentally demonstrate that already a minimalistic device suffices to perform linearly non-separable logic operations. Increasing the complexity of the device using multiple skyrmions or an interplay of multiple devices, may pave the way for low-power and low-training classification of real-life data. [1] D. Gauthier et al., Nat. Comms. 12, 5564 (2021). [2] J. Zázvorka et al., Nat. Nanotechnol. 14, 658 (2019). [3] K. Raab et al., Nat. Comms. 13, 6982 (2022). [4] G. Beneke et al., in preparation (2022).