Implementation of complete Boolean logic functions in single spin-orbit torque device

All 16 Boolean logic functions in a single Ta/CoFeB/MgO device with perpendicular magnetic anisotropy were experimentally demonstrated based on the spin-orbit torque (SOT) effect. Furthermore, by combining with the voltage-controlled magnetic anisotropy (VCMA) effect, a novel SOT-MTJ (magnetic tunnel junction) prototype device with the assistance of the VCMA effect was further designed to perform magnetic field-independent logic operations. The numerical simulations were carried out, demonstrating the feasibility to realize all 16 Boolean logic functions in a single three-terminal device by applying the bias voltage and current injection as input variables. This approach provides a potential way toward the application of energy efficient spin-based logic, which is beyond the current von Neumann computing architecture.

Automated summary

This study demonstrated all 16 Boolean logic functions in a device with perpendicular magnetic anisotropy, and designed a new prototype device to perform magnetic field-independent logic operations. Numerical simulations validated the feasibility of achieving all 16 Boolean logic functions in a single three-terminal device, providing a potential pathway towards energy efficient spin-based logic beyond current von Neumann computing architecture.