Fig. 5: Excitation of transverse magnetic (TM) and transverse electric (TE) graphene plasmon polaritons (GPPs) in magnetized charge neutral graphene (MCNG) ribbon arrays. | Communications Physics

Fig. 5: Excitation of transverse magnetic (TM) and transverse electric (TE) graphene plasmon polaritons (GPPs) in magnetized charge neutral graphene (MCNG) ribbon arrays.

From: Interband plasmon polaritons in magnetized charge-neutral graphene

Fig. 5

a Schematics of the structure. A MCNG ribbon array with the ribbon period L and ribbon width W is encapsulated in the hBN layer shown by blue color. The red arrow shows schematically the direction of an incident plane wave. The thick blue and black arrows correspond to the electric field vector and wavevector of the incident plane wave. b Absorption spectra, A(v), of TM polarized light incident onto hBN-encapsulated (solid curves) and free-standing (dashed curves) MCNG ribbon arrays with different ribbon widths, W. The thickness of both top and bottom hBN layers is 10 nm The bottom panel shows the dispersion relation of TM GPP in MCNGs. c The same as in (b), but for TE polarized light. The inset in the upper panel shows a zoom of the resonance region. The periods of the ribbon arrays are L = 0.22 μm and L = 28 μm for the TM and TE polarizations, respectively. In both cases, the magnetic field is B = 1.3 T.

Back to article page