Chiral anomaly induced magnetoconductances in an irradiated Type-I Weyl Semimetal

TL;DR

This paper investigates how circularly polarized light irradiation influences magnetoconductance in a Type-I Weyl semimetal, revealing time-dependent fluctuations and tunable transport behaviors due to chiral anomaly effects.

Contribution

It introduces a novel analysis of irradiation effects on Weyl semimetals using Boltzmann transport equations, highlighting dynamic magneto-transport phenomena under time-varying fields.

Findings

Chiral anomaly affects both longitudinal and planar Hall conductivities.

Magnetoconductance can be positive or negative depending on field strength and time.

Temporal tuning of fields induces fluctuating magneto-transport behavior.

Abstract

Magneto conductivities in Weyl semimetals (WSM) in presence of small fields are studied using quasi-classical Boltzmann transport equations (BTE). Following such formalism here we consider irradiation via circularly polarized light on a two-node time reversal breaking WSM already under a dc/static electric field and study the magneto-transport properties due to the presence of chiral anomaly. Chiral anomaly affects both longitudinal magnetoconductivity as well as planar Hall conductivity. {As our field set-up causes continuous time variation in the relative orientation between the fields, one naturally expects interesting magneto-transport behavior for different field strengths and tilting.} The type-I tilting that we study here displays both positive and negative magnetoconductances depending on the field strengths and time. Furthermore, we find that a direct temporal tuning of the irradiated field strengths can {lead to fluctuating} magneto-transport behavior which can be easily improvised and checked in the laboratories.