Optical conductivity of graphene and its Drude-like approximation for FDTD

Askar E. Davletov, Zhaxylyk A. Kudyshev, A. Kissan

Physical Sciences and Technology, 2015

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DOI 10.26577/2409-6121-2015-2-2-28-32

Data confidence 70 medium

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Abstract

In this paper, the optical conductivity of a two-dimensional surface material of graphene is theoretically investigated. An effective method for interpolation of the surface conductivity of grapheme is proposed and worked out in the form of a polynomial expansion in Drude conductivities. The proposed expression will significantly facilitate further FDTD (Finite Difference Time Domain) numerical simulations of optical phenomena in the layered hyperbolic medium based on graphene-dielectric sandwich structure.