Nonlocal response in thin-film waveguides: Loss versus nonlocality and breaking of complementarity
Nonlocal response in thin-film waveguides: Loss versus nonlocality and breaking of complementarity
We investigate the effects of nonlocal response on the surface-plasmon polariton guiding properties of the metal-insulator (MI), metal-insulator-metal (MIM), and insulator-metal-insulator (IMI) waveguides. The nonlocal effects are described by a linearized hydrodynamic model, which includes the Thomas-Fermi internal kinetic energy of the free electrons in the metal. We derive the …