Coupled gyration modes and propagation in one-dimensional periodic skyrmion arrays as reliable information carrier

TL;DR

This study uses micromagnetic simulations to analyze coupled skyrmion gyration modes in nanostrips, demonstrating their potential as reliable, low-power information carriers controllable by magnetic fields.

Contribution

It reveals how perpendicular magnetic fields can tune the dispersion of coupled skyrmion gyration modes, advancing skyrmion-based information transmission technology.

Findings

Coupled skyrmion gyration modes exhibit tunable dispersion properties.

Magnetic fields enable control over mode propagation characteristics.

Skyrmion arrays can serve as efficient, low-power information carriers.

Abstract

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.