Optical conductivity renormalization of graphene on SrTiO${}_3$ due to resonant excitonic effects mediated by Ti 3\textit{d} orbitals

Pranjal Kumar Gogoi, Paolo E. Trevisanutto, Ming Yang +10

We present evidence of a drastic renormalization of the optical conductivity of graphene on SrTiO${}_3$ resulting in almost full transparency in the ultraviolet region. These finding…