Magneto-optical conductivity of double Weyl semimetals

Abstract

We investigate the magneto-optical response of double Weyl semimetals whose energy dispersion is intrinsically anisotropic. We find that in the presence of a magnetic field, the most salient feature of the optical conductivity is a series of resonant peaks with the corresponding frequencies scaling linearly with the strength of the magnetic field. In addition, the optical conductivity is found to be anisotropic, with two of the three longitudinal components residing at a linear background and the remaining one at a constant background. The effects of chemical potential, temperature, impurity scattering, and particle-hole symmetry breaking on the optical conductivity are also studied.

7 pages, 5 figures

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• Magneto-optical conductivity in the type-I and type-II phases of Weyl/multi-Weyl semimetals
• Dynamical conductivity of the Fermi arc and the Volkov-Pankratov states on the surface of Weyl semimetals
• Magneto-transport signatures in periodically-driven Weyl and multi-Weyl semimetals
• Breakdown of Fermi liquid theory in topological multi-Weyl semimetals
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• Linear scaling relation between two-dimensional massless Dirac fermion Fermi velocity and Fe-As bond length in iron arsenide superconductor systems