Clocking scheme for nanomagnet QCA

Quantum-dot Cellular Automata (QCA) was previously demonstrated using aluminum tunnel junction single-electron transistor technology at mK temperatures, and molecular QCA is under development for operation at room temperature (RT). All of the basic building blocks needed for QCA have been experimentally demonstrated. Our work on nanomagnet-based QCA (NMQCA) holds the most promise for achieving viable RT operation in the near term. One requirement of the QCA architecture is a low-power clock structure. In this paper, we demonstrate the design and simulation of an on-chip low-power clock circuit that can facilitate the realization of the nanomagnet-based fully functional logic circuit on a single chip.