Nonreciprocal Weyl semimetal waveguide

Abstract

We study a cylindrical plasmonic waveguide consisting of a magnetic Weyl semimetal embedded in a dielectric medium. We determine the dispersion relation of the surface plasmon polaritons and show how it depends on the plasma frequency, the radius of the semimetal and the separation between the nodes. We show that the band structure, which modifies the electrodynamics in the medium, manifests itself through a pronounced asymmetry in the dispersion curves and a giant splitting in the group velocity, with the orbital angular momentum as a control parameter for the direction of propagation.

12 pages, 4 figures. v2: typos corrected, discussion expanded. Accepted version

References in corpus (16)

• First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe
• Topological response in Weyl semimetals and the chiral anomaly
• Chiral plasmonics
• Anomalous Hall Effect in Weyl Metals
• Consequences of a condensed matter realization of Lorentz violating QED in Weyl semi-metals
• Axion Electrodynamics in Topological Materials
• Light control with Weyl semimetals
• Plasmon mode as a detection of the chiral anomaly in Weyl semimetals
• A Single Pair of Weyl Fermions in Half-metallic EuCd2As2 Semimetal
• Optical properties and electromagnetic modes of Weyl semimetals
• EuCd${}_2$As${}_2$: a magnetic semiconductor
• Phonon-limited Transport and Fermi Arc Lifetime in Weyl Semimetals
• Exploring self-consistency of the equations of axion electrodynamics in Weyl semimetals
• Phonon-induced magnetoresistivity of Weyl semimetal nanowires
• Intrinsic ferromagnetic axion states and a single pair of Weyl fermions in the stable-state Mn\emph{X}${}_2$\emph{B}${}_2$\emph{T}${}_6$-family materials
• Anomalous Electromagnetic Field Penetration in a Weyl or Dirac Semimetal