Universality of moiré physics in collapsed chiral carbon nanotubes

We report the existence of moiré patterns and magic angle physics in all families of chiral collapsed carbon nanotubes. A detailed study of the electronic structure of all types of chiral nanotubes, previously collapsed via molecular dynamics, has been performed. We find that each family possesses a...

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Bibliographic Details
Published in:arXiv.org 2023-04
Main Authors: Arroyo-Gascón, Olga, Fernández-Perea, Ricardo, Eric Suárez Morell, Cabrillo, Carlos, Chico, Leonor
Format: Article
Language:English
Subjects:
Angles (geometry)
Bilayers
Carbon nanotubes
Electronic structure
First principles
Graphene
Moire patterns
Molecular dynamics
Spatial distribution
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Summary:We report the existence of moiré patterns and magic angle physics in all families of chiral collapsed carbon nanotubes. A detailed study of the electronic structure of all types of chiral nanotubes, previously collapsed via molecular dynamics, has been performed. We find that each family possesses a unique geometry and moiré disposition, as well as a characteristic number of flat bands. Remarkably, all kinds of nanotubes behave the same with respect to magic angle tuning, showing a monotonic behavior that gives rise to magic angles in full agreement with those of twisted bilayer graphene. Therefore, magic angle behavior is universally found in chiral collapsed nanotubes with a small chiral angle, giving rise to moiré patterns. Our approach comprises first-principles and semi-empirical calculations of the band structure, density of states and spatial distribution of the localized states signaled by flat bands.
ISSN:2331-8422
DOI:10.48550/arxiv.2211.02599