Building programable integrated circuits through disordered Chern insulators

We study the construction of programable integrated circuits with the help of disordered Chern insulators (CIs) in this letter. Specifically, the schemes for low dissipation logic devices and connecting wires are proposed. We use the external-gate-induced step voltage to construct spatially adjustable channels, where these channels take the place of the conventional wires. Our numerical calculation manifests that the external gates can be adopted to program the arbitrary number of wires ($n$-to-$m$ connections). We find that their electron transport is dissipationless and robust against gate voltage fluctuation and disorder strength. Furthermore, seven basic logic gates distinct from the conventional structures are proposed. Our proposal has potential applications in low power integrated circuits and enlightens the building of integrated circuits in topological materials.