Magnetic soliton transport over topological spin texture in chiral helimagnet with strong easy-plane anisotropy

TL;DR

This paper demonstrates the existence of stable magnetic solitons in a chiral helimagnet with strong easy-plane anisotropy, showing their potential for magnon-based transport in topological spin textures.

Contribution

The study introduces a new soliton solution in chiral helimagnets using Bäcklund transformation, highlighting its stability and transport properties.

Findings

Stable magnetic solitons exist over topological ground states.

Magnetic field stabilizes kink crystal states as topological protectors.

Traveling solitons carry magnon density, enabling magnetic transport.

Abstract

We show the existence of an isolated soliton excitation over the topological ground state configuration in chiral helimagnet with the Dzyaloshinskii-Moryia exchange and the strong easy-plane anisotropy. The magnetic field perpendicular to the helical axis stabilizes the kink crystal state which plays a role of "topological protectorate" for the traveling soliton with a definite handedness. To find new soliton solution, we use the B\"{a}cklund transformation technique. It is pointed out that the traveling soliton carries the magnon density and a magnetic solition transport may be realized.