Dynamical conductivity in the topological nodal-line semimetal ZrSiS

Tetsuro Habe and Mikito Koshino
Phys. Rev. B 98, 125201 – Published 4 September 2018

Abstract

We investigate theoretically the dynamical conductivity in the nodal-line semimetal ZrSiS by using a multi-orbital tight-binding model based on a first-principles band calculation. We find that the dynamical conductivity in the clean limit is not frequency independent unlike the ideal Dirac model, while the nearly flat dependence on frequency is achieved by introducing the disorder-induced energy broadening. The result also applies to similar compounds such as ZrSiSe, ZrSiTe, and HfSiS.

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  • Received 11 June 2018

DOI:https://doi.org/10.1103/PhysRevB.98.125201

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Tetsuro Habe and Mikito Koshino

  • Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan

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Issue

Vol. 98, Iss. 12 — 15 September 2018

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