Tunable surface plasmon polaritons in magnetized collision plasma and dielectric

Dispersion relations at the interface between magnetized plasma and a dielectric have been derived based on the effective dielectric function of anisotropic plasma. Results show that a new surface plasmon polariton (SPP) appears when an external magnetic field is introduced. The locations and transmission lengths of the two SPPs can be tuned by the external magnetic field. The collision frequency has little influence on their locations but affects the transmission length. Increasing the dielectric constant causes the two SPPs to shift to a lower frequency with the transmission lengths decreasing. These features are unique and can dynamically control the properties of SPPs. (C) 2019 The Japan Society of Applied Physics