# Oriented propagation of magnetization due to chiral edge modes in Kitaev-type models

## TL;DR

This paper theoretically investigates the dynamics of chiral edge modes in Kitaev-type models, revealing oriented edge magnetization propagation and providing insights into spin and charge transport in topological materials.

## Contribution

It introduces a method to analyze chiral edge mode dynamics in exactly solvable Kitaev models, highlighting oriented magnetization propagation without relying on conserved quantities.

## Key findings

- Edge magnetization propagates along the edge in a chiral manner.
- The approach applies to both spin transport in magnets and charge transport in superconductors.
- The method does not depend on conserved quantities, broadening its applicability.

## Abstract

Detecting chiral edge modes in topological materials has been intensively pursued in experiments. However, the phenomena caused by the modes are not yet elucidated theoretically. We study the dynamics of chiral spinon wave packets at the edge in Kitaev-type magnets. More precisely, by relying on the exact solvability of the models, we construct a spinon wave packet, localized edge magnetization, which shows oriented propagation along the edge, whose behavior is expected from the chiral character of the dispersion relation of the chiral edge modes. In general, this approach enables us to study not only spin transport in anisotropic magnets but also charge transport in Bogoliubov-de Gennes-type superconductors because it does not rely on a conserved quantity.