Kerr effect in tilted nodal loop semimetals

Abstract

We investigate the optical activity of tilted nodal loop semimetals. We calculate the full conductivity matrix for a band structure containing a nodal loop with possible tilt in the $x-y$ plane, which allows us to study the Kerr rotation and ellipticity both for a thin film and a bulk material. We find signatures in the Kerr signal that give direct information about the tilt velocity and direction, the radius of the nodal loop and the internal chemical potential of the system. These findings should serve as guide to understanding optical measurements of nodal loop semimetals and as an additional tool to characterize them.

arXiv comment9 pages, 8 figures

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Cited by in corpus (4)

• Electrochemical transport in Dirac nodal-line semimetals
• Collective excitations and screening in two-dimensional tilted nodal-line semimetals
• Quantum Hall effect and optical magneto-conductivity of two-dimensional topological nodal-line semimetals
• Kerr and Faraday rotations in topological flat and dispersive band structures