2N+4-rule and an atlas of bulk optical resonances of zigzag graphene nanoribbons

Renebeth B. Payod, Davide Grassano, Gil Nonato C. Santos, Dmitry I. Levshov, Olivia Pulci and Vasil A. Saroka ()
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Renebeth B. Payod: De La Salle University
Davide Grassano: University of Rome Tor Vergata
Gil Nonato C. Santos: De La Salle University
Dmitry I. Levshov: Southern Federal University
Olivia Pulci: University of Rome Tor Vergata
Vasil A. Saroka: Norwegian University of Science and Technology

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Development of on-chip integrated carbon-based optoelectronic nanocircuits requires fast and non-invasive structural characterization of their building blocks. Recent advances in synthesis of single wall carbon nanotubes and graphene nanoribbons allow for their use as atomically precise building blocks. However, while cataloged experimental data are available for the structural characterization of carbon nanotubes, such an atlas is absent for graphene nanoribbons. Here we theoretically investigate the optical absorption resonances of armchair carbon nanotubes and zigzag graphene nanoribbons continuously spanning the tube (ribbon) transverse sizes from 0.5(0.4) nm to 8.1(12.8) nm. We show that the linear mapping is guaranteed between the tube and ribbon bulk resonance when the number of atoms in the tube unit cell is $$2N+4$$2N+4, where $$N$$N is the number of atoms in the ribbon unit cell. Thus, an atlas of carbon nanotubes optical transitions can be mapped to an atlas of zigzag graphene nanoribbons.

Date: 2020
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DOI: 10.1038/s41467-019-13728-8

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