MAGNETOPLASMON POLARITONS IN FINITE N-I-P-I SUPERLATTICES

We investigate the effects of an external magnetic field on plasmon polaritons propagating in truncated n-i-p-i superlattices, using a local theory with retardation. We use a transfer-matrix method to simplify the algebraic expressions, which are otherwise quite involved. The external magnetic field is taken to be parallel to the surface and perpendicular to the direction of propagation of the plasmon polaritons. We also present numerical results pointing out the differences of the spectra with and without the presence of the external magnetic field. Our results generalize previous work on this subject.