MTJ-based implication logic gates and circuit architecture for large-scale spintronic stateful logic systems

Because of the easy integration with CMOS, non-volatility, reconfiguration capability, and fast-switching speed of magnetic tunnel junctions (MTJs), this work proposes and investigates stateful IMP-based logic gates and circuit architecture for future reconfigurable and nonvolatile computing systems. Stateful logic uses the memory unit (MTJ device) as the main computing element (logic gate) unlike the previously proposed MTJ-based logic circuits, where MTJs are only ancillary devices in logical computations. Spintronic IMP logic gates are analyzed using a SPICE model for spin-transfer torque MTJs to demonstrate the reliability of the IMP operation. The realization of the spintronic stateful logic operations extends nonvolatile electronics from memory to logical computing applications and opens the door for more complex logic functions to be realized with MTJ-based devices.