Interband transitions in narrow-gap carbon nanotubes and graphene nanoribbons

• Main Authors: Hartmann, R. R., Saroka, V. A., Portnoi, M. E.
• Format: text
• Published: Animo Repository 2019
• Subjects: Carbon nanotubes; Energy gap (Physics); Graphene; Photons; Submillimeter waves; Physics
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/3743; https://animorepository.dlsu.edu.ph/context/faculty_research/article/4745/type/native/viewcontent/1.5080009
• Institution: De La Salle University

We use the robust nearest-neighbor tight-binding approximation to study the same footing interband dipole transitions in narrow-bandgap carbon nanotubes (CNTs) and graphene nanoribbons (GNRs). It is demonstrated that curvature effects in metallic single-walled CNTs and edge effects in gapless GNRs n...