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

References in corpus (3)

• Topological response in Weyl semimetals and the chiral anomaly
• Berry Curvature, Triangle Anomalies, and the Chiral Magnetic Effect in Fermi Liquids
• Consequences of a condensed matter realization of Lorentz violating QED in Weyl semi-metals

Cited by in corpus (8)

• Anomalous Hall Effect in Weyl Metals
• Chiral anomaly and transport in Weyl metals
• Chiral Anomaly and Diffusive Magnetotransport in Weyl Metals
• Thermoelectric properties of Weyl and Dirac semimetals
• Plasmon mode as a detection of the chiral anomaly in Weyl semimetals
• Plasmon signature in Dirac-Weyl liquids
• Interacting Weyl semimetals: characterization via the topological Hamiltonian and its breakdown
• Quantum oscillations as a probe of interaction effects in Weyl semimetals in a magnetic field