Electrodynamics on Fermi Cyclides in Nodal Line Semimetals

Seongjin Ahn, E. J. Mele, and Hongki Min
Phys. Rev. Lett. 119, 147402 – Published 5 October 2017
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Abstract

We study the frequency-dependent conductivity of nodal line semimetals (NLSMs), focusing on the effects of carrier density and energy dispersion on the nodal line. We find that the low-frequency conductivity has a rich spectral structure which can be understood using scaling rules derived from the geometry of their Dupin cyclide Fermi surfaces. We identify different frequency regimes, find scaling rules for the optical conductivity in each, and demonstrate them with numerical calculations of the inter- and intraband contributions to the optical conductivity using a low-energy model for a generic NLSM.

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  • Received 3 March 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.147402

© 2017 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Seongjin Ahn1, E. J. Mele2,*, and Hongki Min1,2,†

  • 1Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
  • 2Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA

  • *mele@physics.upenn.edu
  • hmin@snu.ac.kr

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Issue

Vol. 119, Iss. 14 — 6 October 2017

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