Plasmon spectrum of graphene monolayer on substrate

Askerzade İ., Askerbeyli R. T.

MODERN PHYSICS LETTERS B, cilt.33, sa.9, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 9
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1142/s0217984919501021
  • Dergi Adı: MODERN PHYSICS LETTERS B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Plasmon spectrum, graphene, substrate, Coulomb potential, superlattice, CRITICAL-TEMPERATURE, SUPERCONDUCTORS, MODES, FIELD
  • Ankara Üniversitesi Adresli: Evet

Özet

Plasmon modes in monolayer graphene on substrate are analyzed taking into account the thickness of graphene and substrate material layer in the evaluation of Coulomb potential. It is shown that plasmon mode in graphene monolayer has linear dispersion in contrast to multilayer graphene in long-wavelength limit. The slope of plasmon spectrum is determined by the thickness and dielectric constant of substrate. Obtained results are in good agreement with experimental data and other theoretical considerations.