Response function and transfer matrix for a perfect sheet
The perfect sheet model which treats layered 2D materials as an infinitesimally thin sheet is gaining acceptance in the science community. In regards to this, a response function ϒ for a polarizable and conducting perfect sheet is introduced. This response function ϒ is considered in the matrix formalism on reflection, transmission and absorption of light for optical systems that involve 2D materials. Examples on how to use the matrix formalism are shown in this paper.