1. Near-Landauer Reversible Skyrmion Logic with Voltage-Based Propagation
- Author
-
Walker, Benjamin W., Edwards, Alexander J., Hu, Xuan, Frank, Michael P., Garcia-Sanchez, Felipe, and Friedman, Joseph S.
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics ,Computer Science - Emerging Technologies ,Physics - Applied Physics - 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., Comment: 4 pages, 6 figures
- Published
- 2023