Characteristics of Plasmon Mode at Anisotropic Plasma–Black Phosphorene Interface

The behavior of plasmon mode at anisotropic plasma–black phosphorene (BP) planar interface has been studied in this work. The extended electromagnetic waves theory is used, and impedance boundary conditions are employed to obtain dispersion relation. The influence of plasma parameters such as cyclotron and plasma frequencies, and BP parameters such as carrier density and thickness on normalized phase constant versus incident waves frequency along armchair and zigzag conductivity are analyzed. It is concluded that plasma and BP parameters can be used to tune plasmonic frequencies for the proposed interface. It is demonstrated that armchair conductivity has higher normalized phase constant compared to the zigzag conductivity. Furthermore, normalized fields distribution for plasma medium are also studied to confirm electromagnetic surface waves condition. The presented results are being used to increase the efficiency of nanophotonic chips due to the anisotropic nature of BP over other plasmonic materials.