Figure 4.

Simulated spectra of reflection (R), transmission (T), absorption (A) as well as absorption in the absorptive layer ($A^{\prime }$) for linearly polarized light. (a) For TM (x-polarized) mode at normal incidence, there is a resonance at around $12.93\mathsf{\mu }$m; (b) For TE (y-polarized) mode at normal incidence, there is a resonance at around $14.08\mathsf{\mu }$m. The enhancement of absorption in the absorptive layer and the magnetic field in the z-direction is also shown. The insets in (a,b) show the magnetic fields in the z-direction that are plotted in the x–y plane that is 5 nm above the graphene cross at the resonances. The Fermi energy here is $E_F=0.6$ eV.