Universality of moiré physics in collapsed chiral carbon nanotubes



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Arroyo Gascón, Olga and Fernández Pera, Ricardo and Suárez Morell, Eric and Cabrillo, Carlos and Chico Gómez, Leonor (2023) Universality of moiré physics in collapsed chiral carbon nanotubes. Carbon, 205 . pp. 394-401. ISSN 0008-6223

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Official URL: http://dx.doi.org/10.1016/j.carbon.2023.01.052


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 moire 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.

Item Type:Article
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© 2023 The Author(s). Published by Elsevier Ltd.
We thank Gloria Platero for generously sharing her computational resources and Sergio Bravo for helpful discussions. We also thank the Centro de Supercomputación de Galicia, CESGA, (www.cesga.es, Santiago de Compostela, Spain) for providing access to their supercomputing facilities. This work was supported by grant PID2019-106820RB-C21 funded by MCIN/AEI/ 10.13039/501100011033/ and by ‘‘ERDF A way of making Europe’’, by grant TED2021-129457B-I0 funded by MCIN/AEI/10.13039/501100011033/ and by the ‘‘European Union NextGenerationEU/PRTR’’ and by grant PRE2019-088874 funded by MCIN/AEI/10.13039/501100011033 and by ‘‘ESF Investing in your future’’. ESM acknowledges financial support from FONDECYT Regular, Chile 1221301, and LC gratefully acknowledges the support from Comunidad de Madrid (Spain) under the Multiannual Agreement with Universidad Complutense de Madrid, Program of Excellence of University Professors, in the context of the V Plan Regional de Investigación Científica e Innovación Tecnológica (PRICIT).

Uncontrolled Keywords:Electronic-structure; Graphene; Diameter; Carbon nanotubes; Moiré; Magic angles; Twisted bilayer graphene
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:78094
Deposited On:16 May 2023 15:10
Last Modified:16 May 2023 15:10

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