Implementation of skyrmion cellular automaton using Brownian motion and magnetic dipole interaction
Ryo Ishikawa, Minori Goto, Hikaru Nomura, Yoshishige Suzuki
Abstract
In this study, we investigated the interaction between skyrmions in Brownian motion at room-temperature. Cells containing two skyrmions were implemented by controlling the magnetic anisotropy in the Ta/CoFeB/Ta/MgO/SiO2 structure. The interaction between skyrmions was investigated by fabricating a circuit with two cells in close proximity to each other. It was found that the minimum value of the correlation coefficient was −0.234. These results show that the Brownian motion of skyrmions can potentially realize unconventional computing such as stochastic calculations and ultra-low power computing.
Topics & Concepts
SkyrmionBrownian motionCondensed matter physicsAnisotropyDipolePhysicsCellular automatonMotion (physics)Magnetic anisotropyMagnetic fieldClassical mechanicsMagnetizationQuantum mechanicsComputer scienceAlgorithmMagnetic properties of thin filmsCellular Automata and ApplicationsQuantum-Dot Cellular Automata