Probing the experimental phonon dispersion of graphene using C-12 and C-13 isotopes

Article

关键词: THERMAL-CONDUCTIVITY;    RAMAN-SPECTROSCOPY;    GRAPHITE;    FILMS;    SCATTERING;   

DOI  :  10.1103/PhysRevB.86.085409

来源: SCIE

【 摘 要 】

Using very uniform large-scale chemical vapor deposition grown graphene transferred onto silicon, we were able to identify 15 distinct Raman lines associated with graphene monolayers. This was possible thanks to a combination of different carbon isotopes and different Raman laser energies and extensive averaging without increasing the laser power. This allowed us to obtain a detailed experimental phonon dispersion relation for many points in the Brillouin zone. We further identified a D + D' peak corresponding to a double-phonon process involving both an inter- and intravalley phonon.

【 授权许可】

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