• 文献标题:   Coulomb mechanism of Raman radiation in graphene
  • 文献类型:   Article
  • 作  者:   MELKONYAN SV
  • 作者关键词:   graphene, optical transition, photoluminescence, raman scattering
  • 出版物名称:   CARBON LETTERS
  • ISSN:   1976-4251 EI 2233-4998
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.1007/s42823-020-00220-3 EA JAN 2021
  • 出版年:   2021

▎ 摘  要

The phenomena of single-layer graphene resonant photoluminescence and Raman radiation are discussed taking into account the photo-generated electron-hole Coulomb interaction. On the base of general principles of a many-particle interactions and the interband resonance optical transitions a photon radiation new mechanism (Coulomb mechanism) is proposed. Through Stokes 2D'-mode particular case analysis has shown that the graphene photoluminescence and the resonant Raman radiation are characterized by the same frequency shifts. Probabilities of resonance photo-radiation processes have been presented where the electron-hole Coulomb attraction has been taken into account. The probabilities are the same fourth-order small values. The weak photo-radiation Coulomb mechanism has a common character. It is applicable to both zero and nonzero band gap crystals.