# Photoinduced interfacial chiral modes in threefold topological semimetal

## TL;DR

This paper explores how circularly polarized light induces chiral electronic modes at the interface of a threefold topological semimetal, revealing phase-dependent chirality and anomalous Hall effects through Floquet theory analysis.

## Contribution

It introduces a novel analysis of photoinduced chiral interface modes in topological semimetals, highlighting phase-dependent chirality and associated Hall responses.

## Key findings

- Two distinct chiral interface modes identified
- Chirality depends on the phase of incident light
- Anomalous Hall response linked to band transitions

## Abstract

We investigate the chiral electronic modes at the interface between two regions of a threefold topological semimetal, which is illuminated by left and right handed elliptically polarized waves. The radiation effects on the band structure of semimetal is analyzed by using Floquet theory. Two distinct solutions of the interface modes are found with the chirality depending on the phase of the irradiation. We also consider the anomalous Hall response which is attributed to the transition between dispersionless flat band and conic bands.