Density response in Weyl metals

Abstract

We report on a study of the density response in doped Weyl semimetals or Weyl metals in the presence of an external magnetic field. We show that the applied field leads to a contribution to the density response, which is topological in nature and is closely related to the phenomenon of chiral anomaly. This contribution manifests in a nonanalytic nonclassical correction to the electronic compressibility and the plasmon frequency, proportional to the magnitude of the magnetic field. Such a nonanalytic correction to the electronic compressibility is a smoking-gun feature of Weyl metals, which clearly distinguishes them from ordinary ferromagnetic metals.

7+ pages, 1 figure, published version

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• Predicted Unusual Magnetoresponse in Type-II Weyl Semimetals
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• Giant tunable nonreciprocity of light in Weyl semimetals
• Magneto-transport phenomena related to the chiral anomaly in Weyl semimetals
• Plasmon mode as a detection of the chiral anomaly in Weyl semimetals
• Chirality Hall Effect in Weyl Semimetals
• Plasmon signature in Dirac-Weyl liquids
• Interacting Weyl semimetals: characterization via the topological Hamiltonian and its breakdown
• Circumventing the no-go theorem: A single Weyl point surrounded by nodal walls
• Detecting Chiral Magnetic Effect by Lattice Dynamics
• Fermi arc plasmons in Weyl semimetals
• Breakdown of the Chiral Anomaly in Weyl Semimetals in a Strong Magnetic Field
• Electronic Cooling in Weyl and Dirac Semimetals
• Hear the Sound of Weyl Fermions
• Double Weyl points and Fermi arcs of topological semimetals in non-Abelian gauge potentials
• Dynamical polarizability, screening, and plasmons in one, two, and three dimensional massive Dirac systems
• Influence of Landau levels in the phonon dispersion of Weyl semimetals
• Effects of anisotropy and disorder on the conductivity of Weyl semimetals
• Complete optical valley polarization in Weyl semimetals in strong magnetic fields
• Unconventional electromagnetic mode in neutral Weyl Semimetals
• Quantum oscillations as a probe of interaction effects in Weyl semimetals in a magnetic field
• Spin-orbit interaction driven collective electron-hole excitations in a noncentrosymmetric nodal loop Weyl semimetal
• Optical Signatures of the Chiral Anomaly in Mirror-Symmetric Weyl Semimetals
• Surface plasmonics of Weyl semimetals
• Dynamical density response and optical conductivity in topological metals
• Resonant Plasmon-Axion Excitations Induced by Charge Density Wave Order in Weyl Semimetal
• 3D Topological Plasmons in Weyl Semimetals
• Quantum oscillations in Dirac magnetoplasmons
• Large anomalous magnetic moment in three-dimensional Dirac and Weyl semimetals
• Collective modes in imbalanced nodal line semimetal
• Dynamical spin-spin susceptibility of Silicene
• Doping Topological Dirac Semimetal with magnetic impurities: electronic structure of Mn-doped Cd${}_3$As${}_2$
• Irreducible momentum-space spin structure of Weyl semimetals and its signatures in Friedel oscillations
• Global phase diagram of Coulomb-interacting anisotropic Weyl semimetals with disorder