Photonic modes in twisted graphene nanoribbons

Güvendi A., Gürtaş Doğan S., Mustafa O., Hasanırokh K.

PHYSICA E: LOW-DIMENSIONAL SYSTEMS AND NANOSTRUCTURES, ss.1, 2024 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.physe.2024.116146
  • Dergi Adı: PHYSICA E: LOW-DIMENSIONAL SYSTEMS AND NANOSTRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Applied Science & Technology Source, Compendex, Computer & Applied Sciences, INSPEC
  • Sayfa Sayıları: ss.1
  • Hakkari Üniversitesi Adresli: Evet

Özet

This study investigates the behavior of photonic modes in twisted graphene nanoribbons (TGNRs) using an analytical approach based on solving the fully covariant vector boson equation. We present a model that demonstrates how helical twisting in TGNRs significantly affects the evolution of photonic modes. Our ana lytical solutions yield detailed expressions for mode profiles, en ergy spectra, and decay characteristics. We find that increasing the twist parameter shortens the decay times (τns) for damped modes, indicating enhanced photonic coupling due to the twisted geometry. Conversely, longer nanoribbons (NRs) exhibit in creased decay times, showing a length (L)-dependent effect, where τns ∝ L/c, with c representing the speed of light. These f indings mayenhancetheunderstanding of light control in nanos tructures and suggest potential applications in tunable photonic devices, topological photonics, and quantum optical systems.