Quantum interference engineering of nanoporous graphene for carbon nanocircuitry

Abstract

Bottom-up prepared carbon nanostructures appear as promising platforms for future carbon-based nanoelectronics, due to their atomically precise and versatile structure. An important breakthrough is the recent preparation of nanoporous graphene (NPG) as an ordered covalent array of graphene nanoribbons (GNRs). Within NPG, the GNRs may be thought of as 1D electronic nanochannels through which electrons preferentially move, highlighting NPG's potential for carbon nanocircuitry. However, the π-conjugated bonds bridging the GNRs give rise to electronic cross-talk between the individual 1D channels, leading to spatially dispersing electronic currents. Here, we propose a chemical design of the bridges resulting in destructive quantum interference, which blocks the cross-talk between GNRs in NPG, electronically isolating them. Our multiscale calculations reveal that injected currents can remain confined within a single, 0.7 nm wide, GNR channel for distances as long as 100 nm. The concepts developed in this work thus provide an important ingredient for the quantum design of future carbon nanocircuitry.

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Cited by in corpus (8)

• Interplay between destructive quantum interference and symmetry-breaking phenomena in graphene quantum junctions
• Stability of destructive interference antiresonances in electron transport through graphene nanostructures
• All-carbon approach to inducing electrical and optical anisotropy in graphene
• Electrode effects on the observability of destructive quantum interference in single-molecule junctions
• Tailoring giant quantum transport anisotropy in disordered nanoporous graphenes
• Robust quantum engineering of current flow in carbon nanostructures at room temperature
• Quantum transport in nitrogen-doped nanoporous graphenes
• Real-Time Out-of-Equilibrium Quantum Dynamics in Disordered Materials