Nanomagnetic logic design approach for area and speed efficient adder using ferromagnetically coupled fixed input majority gate

摘要

In this letter, we introduce the magnetic quantum-dot cellular automata (MQCA) based area and speed efficient design approach for nanomagnetic full adder implementation. We exploited the physical properties of three input MQCA majority gate (MG), where the fixed input of the MG is coupled ferromagnetically to one of the primary input operands. Subsequently we propose a design methodology, mapping logic and micromagnetic software implementation, validation of the binary full adder architecture built using two-three inputs MQCA MGs. In addition, we also analyzed our proposed design for switching errors to ensure bit stability and reliability. Our proposed design leads to similar to 36%-69% reduction in the number of nanomagnets, similar to 50%-75% reduction in the number of clock cycles and similar to 33%-50% reduction in the number of MG operations required for the binary full adder implementation compared to the state of art designs.