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 inCarbon (New York) Vol. 205; pp. 394 - 401
Main Authors Arroyo-Gascón, Olga, Fernández-Perea, Ricardo, Morell, Eric Suárez, Cabrillo, Carlos, Chico, Leonor
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 05.03.2023
Subjects
Carbon nanotubes
Magic angles
Moiré
Twisted bilayer graphene
Carbon nanotubes
Twisted bilayer graphene
Magic angles
Moiré
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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. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2023.01.052