# Persistent current due to a screw dislocation in Weyl semimetals: Role of one-dimensional chiral states

## TL;DR

This paper demonstrates that screw dislocations in Weyl semimetals induce persistent charge currents via 1D chiral states, confirmed through numerical calculations and analysis of current distribution.

## Contribution

It provides the first numerical confirmation that screw dislocations generate persistent currents in Weyl semimetals through 1D chiral states.

## Key findings

- Significant charge current induced by 1D chiral states near dislocation
- Spatial distribution of current analyzed at system surfaces
- Conversion of dislocation-induced current to surface states explained

## Abstract

A Weyl semimetal pierced by a screw dislocation accommodates one-dimensional (1D) chiral states along the corresponding dislocation line. As these states propagate in a particular direction determined by their chirality, a persistent current (i.e., charge current in equilibrium) is expected to appear in the interior of the system. To confirm this expectation, we numerically calculate the charge current in a Weyl semimetal in the presence of a screw dislocation. It is shown that a significant charge current is induced by the 1D chiral states near the dislocation. We also analyze the spatial distribution of the charge current focusing on the top and bottom surfaces of the system, at which the screw dislocation is terminated, and give an overview of how the charge current due to the dislocation is converted to that carried by other states near the termination point of the dislocation.