Electrodynamics on Fermi Cyclides in Nodal Line Semimetals

ORAL

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. [Phys. Rev. Lett. 119, 147402 (2017)]

*This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education under Grant No. 2015R1D1A1A01058071. E. J. M.’s work on this project was supported by the U.S. Department of Energy, Office of Basic Energy Science

–

Presenters

  • Seongjin Ahn

    • Department of Physics and Astronomy, Seoul Natl Univ

Authors

  • Seongjin Ahn

    • Department of Physics and Astronomy, Seoul Natl Univ

  • Eugene Mele

    • Physics & Astronomy, University of Pennsylvania
    • Physics and Astronomy, University of Pennsylvania
    • Department of Physics and Astronomy, University of Pennsylvania
    • Univ of Pennsylvania
    • University of Pennsylvania

  • Hongki Min

    • Department of Physics and Astronomy, Seoul Natl Univ