  We report on a micromagnetic numerical simulation study of dynamic couplings
between neighboring skyrmions in narrow-width nanostrips. We explored the
coupled gyration modes and their characteristic dispersions in terms of the
interdistance between the neighboring skyrmions. The application of
perpendicular magnetic fields, importantly, allows for control/modification of
the dispersion of the coupled modes. Coupled skyrmion gyration modes provide a
new type of efficient, reliable, fast, low-power-consumption information-signal
propagation in narrow-width straight and curved nanostrips, as driven
predominantly by the exchange interaction between individual nano-scale
skyrmions.
