One-dimensional moiré superlattices and flat bands in collapsed chiral carbon nanotubes

Abstract

We demonstrate that one-dimensional moiré patterns, analogous to those found in twisted bilayer graphene, can arise in collapsed chiral carbon nanotubes. Resorting to a combination of approaches, namely, molecular dynamics to obtain the relaxed geometries and tight-binding calculations validated against ab initio modeling, we find that magic angle physics occur in collapsed carbon nanotubes. Velocity reduction, flat bands and localization in AA regions with diminishing moiré angle are revealed, showing a magic angle close to 1${}^{\mathrm{o}}$. From the spatial extension of the AA regions and the width of the flat bands, we estimate that many-body interactions in these systems are stronger than in twisted bilayer graphene. Chiral collapsed carbon nanotubes stand out as promising candidates to explore many-body effects and superconductivity in low dimensions, emerging as the one-dimensional analogues of twisted bilayer graphene.

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Cited by in corpus (6)

• Universality of moiré physics in collapsed chiral carbon nanotubes
• One-Dimensional Moiré Physics and Chemistry in Heterostrained Bilayer Graphene
• The carbon nanotube gatemon qubit
• Impact of vacancies on twisted bilayer graphene quantum point contacts
• Emergent electronic insulating states in a one-dimensional moiré superlattice
• One-dimensional moiré engineering in zigzag graphene nanoribbons on hBN