The optical conductivity and electron energy loss of graphene under different hydrostatic pressures using first-principles

Abstract

The optical conductivity, refractive index and electron energy loss function og graphene have been studied under different pressures using first-principles. In this study the above mentioned optical parameters have been studied for the first time under 0 GPa, 20 GPa and 40 GPa external pressures. The calculated values agrees well with the published results earlier at zero pressure.