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arXiv · 2301.10700

Near-Landauer Reversible Skyrmion Logic with Voltage-Based Propagation

Benjamin W. Walker·Alexander J. Edwards·Xuan Hu·Michael P. Frank·Felipe Garcia-Sanchez·Joseph S. Friedman
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Abstract

Magnetic skyrmions are topological quasiparticles whose non-volatility, detectability, and mobility make them exciting candidates for low-energy computing. Previous works have demonstrated the feasibility and efficiency of current-driven skyrmions in cascaded logic structures inspired by reversible computing. As skyrmions can be propelled through the voltage-controlled magnetic anisotropy (VCMA) effect with much greater efficiency, this work proposes a VCMA-based skyrmion propagation mechanism that drastically reduces energy dissipation. Additionally, we demonstrate the functionality of skyrmion logic gates enabled by our novel voltage-based propagation and estimate its energy efficiency relative to other logic schemes. The minimum dissipation of this VCMA-driven magnetic skyrmion logic at 0 K is found to be $\sim$6$\times$ the room-temperature Landauer limit, indicating the potential for sub-Landauer dissipation through further engineering.

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Benjamin W. Walker, Alexander J. Edwards, Xuan Hu, Michael P. Frank, Felipe Garcia-Sanchez, Joseph S. Friedman. 2023-01-25. Near-Landauer Reversible Skyrmion Logic with Voltage-Based Propagation. https://arxiv.org/abs/2301.10700

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