A novel 3D three/five-input majority-based full adder in nanomagnetic logic

摘要

In recent decades, complementary metal-oxide-semiconductor (CMOS) downscaling has faced some serious challenges such as undesired leakage current densities and high power dissipation. One of the most attractive and promising alternative technologies to CMOS is nanomagnetic logic (NML), which is based on nonvolatile ferromagnetic computing states. In this paper, a novel full adder cell is suggested by providing a feedback loop to a special multilayer nanomagnetic majority voter, which switches between three- and five-input majorities periodically. This solution also represents an example revealing the potential of NML for circuit designs that are not accessible using other technologies such as CMOS or quantum-dot cellular automata (QCA). This capability comes from the combination of a clocking system and the nonvolatile behavior of NML. The correct operation of the new full adder cell is verified using the MQCA Verilog library. Comparisons with other state-of-the-art full adders show significant improvements in terms of density and simplicity.