Nonreciprocal magnetoplasmons in imperfect layered structures

Abstract

Nonreciprocal properties of magnetoplasmons in the imperfect magnetised semiconductor films sandwiched between the dielectric layers have been explored. It is demonstrated that losses qualitatively alter the eigenwave spectrum and the properties of magnetoplasmons. The effect of the structure parameters is analysed, and it is shown that strongly nonreciprocal attenuation of the eigenmodes in asymmetric structures may result in the unidirectional propagation of magnetoplasmonic modes. The competing effects of the reciprocal and nonreciprocal field displacement, and the impact of the field and power flux distributions on the mechanisms of nonreciprocal and unidirectional magnetoplasmon propagation in the imperfect semiconductor films are discussed.

One-way surface states due to nonreciprocal light-line crossing

“…Several approaches have been proposed recently for passive and active control over the propagation of electromagnetic waves at the nanoscale, including pump-probe techniques [13], nonlinear self-tuning [14], spatio-temporal waveguide modulation [15], as well as electric and magnetic field control over interaction of fields and matter [16,17]. In particular, magnetooptical (MO) material response has been exploited recently for tuning the light propagation in plasmonic and metamaterial structures [18][19][20][21][22][23]. Furthermore, magneto-active materials may break the time reversal symmetry of Maxwell's equations, which may also imply the nonreciprocal wave propagation, i.e.…”