Chiral anomaly induced magnetoconductances in an irradiated type-I Weyl semimetal.

J Phys Condens Matter

AKPC Mahavidyalaya, Bengai, West Bengal 712611, India.

Published: September 2022

AI Article Synopsis

  • The study investigates the magneto conductivities in Weyl semimetals (WSMs) under small electric and magnetic fields, using quasi-classical Boltzmann transport equations.
  • It focuses on the effects of circularly polarized light on a specific type of WSM that breaks time-reversal symmetry, exploring how the chiral anomaly impacts both longitudinal magnetoconductivity and planar Hall conductivity.
  • The findings show that the orientation and strength of the fields can create varying magneto-transport behaviors, including both positive and negative magnetoconductances, which can be adjusted in real-time for experimental validation.

Article Abstract

Magneto conductivities in Weyl semimetals (WSMs) in presence of small fields are studied using quasi-classical Boltzmann transport equations. 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.

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http://dx.doi.org/10.1088/1361-648X/ac916fDOI Listing

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