# Tunable spin dynamics in chiral soliton lattice

## TL;DR

This paper investigates how the period of a chiral soliton lattice affects its spin dynamics and velocity, revealing a slowdown with increased period and linking it to magnetic resistance, using collective coordinate and gauge methods.

## Contribution

It introduces a detailed analysis of CSL dynamics dependence on its period, employing novel collective coordinate and SU(2) gauge techniques.

## Key findings

- CSL velocity decreases as its period increases
- A relation between CSL velocity and magnetic resistance is established
- The analysis uses collective coordinate and SU(2) gauge methods

## Abstract

We study dynamics of a chiral soliton lattice (CSL) in a classical one-dimensional spin chain coupled to the conduction electrons under an electric field. The CSL has attracted much interest because its period can be easily controlled by an external magnetic field. We clarify the dependence of the CSL dynamics on its period. A collective coordinate and an SU(2) gauge method are used for the analysis. It turns out that the velocity of the CSL becomes slower as the period becomes longer. We also mention a relation between the velocity and the magnetic resistance.