Tunable point nodes from line node semimetals via application of light

TL;DR

This paper demonstrates how shining light on line node semimetals can create tunable point node semimetals with controllable positions, affecting their electronic properties and transport behavior.

Contribution

It introduces a method to convert line node semimetals into tunable point node semimetals using light, with adjustable node positions.

Findings

Light can induce point nodes in line node semimetals.

The position of the point nodes can be controlled by rotating the incident light.

Topological and transport properties are affected by this transformation.

Abstract

We propose that illumination with light provides a useful platform for creating tunable semimetals. We show that by shining light on semimetals with a line degeneracy, one can convert them to a point node semimetal. These point nodes are adjustable and their position can be controlled by simply rotating the incident light beam. We also discuss the implications of this change in Fermi surface topology, as manifested in transport observables.