Electromagnetic waves reflection, transmission and absorption by graphene–magnetic semiconductor–graphene sandwich-structure in magnetic field: Faraday geometry

Abstract

Electrodynamic properties of the graphene -magnetic semiconductor -graphene sandwich-structure have been investigated theoretically with taking into account the dissipation processes. Influence of graphene layers on electromagnetic waves propagation in graphene -semi-infinte magnetic semiconductor and graphene -magnetic semiconductor -graphene sandwich-structure has been analyzed. Frequency and field dependences of the reflectance, transmittance and absorbtance of electromagnetic waves by such structure have been calculated. The size effects associated with the thickness of the structure have been analyzed. The possibility of efficient control of electrodynamic properties of graphene -magnetic semiconductor -graphene sandwich structure by an external magnetic field has been shown. (Dmitry A. Kuzmin), bychkov@csu.ru (Igor V. Bychkov)

The Amplification and Polarization Control of Transmitted Radiation by a Graphene-Containing Photonic Cell

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“…where plasma and cyclotron frequencies are introduced ω p = 4πe 2 n 0 /m * ε l and ω c = eH 0 /m * c. For numerical modeling, we will use the parameters of the above p-type magnetic semiconductor: ε l 17.8 is the lattice part of the permittivity, n 0 and m * is the concentration of carriers n 0 = 6 • 10 14 cm −3 , their effective mass m * = 0.1 m e , ω ν = ω + iν, collision frequency ν = 10 11 s −1 [26,28]. The effective permittivity is ε ⊥ = ε − ε 2 a /ε taking into account the transverse orientation of the external magnetic field with respect to the wave vector (k ⊥ H 0 ).…”

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