Regensburg 2019 – scientific programme
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MA: Fachverband Magnetismus
MA 34: Magnetic textures: Transport and dynamics II
MA 34.6: Talk
Wednesday, April 3, 2019, 16:30–16:45, H37
Skyrmions for non-conventional computing — •Klaus Raab1, Nico Kerber1,4, Jakub Zázvorka1, Florian Jakobs2, Daniel Heinze1, Niklas Keil1, Sascha Kromin1, Samridh Jaiswal1,3, Kai Litzius1,4, Gerhard Jakob1, Peter Virnau1, Daniele Pinna1, Karin Everschor-Sitte1, Andreas Donges2, Ulrich Novak2, and Mathias Kläui1,4 — 1Institut für Physik, Johannes Gutenberg Universität Mainz, DE-55099 Mainz, Germany — 2Fachbereich Physik, Universität Konstanz, Universitätsstraße 10, DE-78457 Konstanz, Germany — 3Singulus Technologies AG, DE-63796 Kahl, Germany — 4Graduate School of Excellence Materials Science in Mainz, DE-55128 Mainz, Germany
In cascading logic gates for probabilistic computing [1], undesired correlations can occur that thus impede the functionality as a logic device. To decorrelate an information stream, a reshuffler device based on skyrmoins has been proposed [1], that we realize using skyrmions in a multilayer stack [2-3] : In a Ta-based material we are able to not only stabilize and controllably nucleate the skyrmions, but also displace them by current injection due to spin-orbit torques [4]. To eliminate correlations in a skyrmion data stream, we show that we can decorrelate the signals using a device with leads for skyrmion transport and a chamber where this reshuffling occurs [4]. We study the different skyrmion transport possibilities and properties to gauge the device performance. The low reshuffler footprint and low power usage compared to e.g. CMOS [3,4] might enable more energy efficient computing.