Charge Transport in Weyl Semimetals

Pavan Hosur, S. A. Parameswaran, and Ashvin Vishwanath
Phys. Rev. Lett. 108, 046602 – Published 24 January 2012; Erratum Phys. Rev. Lett. 123, 079901 (2019)
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Abstract

We study transport in Weyl semimetals with N isotropic Weyl nodes in the presence of Coulomb interactions or disorder at temperature T. In the interacting clean limit, we determine the conductivity σ(ω,T) by solving a quantum Boltzmann equation within a “leading log” approximation and find it to be proportional to T, up to logarithmic factors arising from the flow of couplings. In the noninteracting disordered case, we compute the Kubo conductivity and show that it behaves differently for ωT and ωT: in the former regime we recover a previous result, of a finite dc conductivity and a Drude width vanishing as NT2; in the latter, we find that σ(ω,T) vanishes linearly with ω with a leading term as T0 equal to the clean, free-fermion result: σ0(N)(ω,T=0)=Ne212h|ω|vF. We compare our results to transport data on Y2Ir2O7 and comment on the possible relevance to recent experiments on Eu2Ir2O7.

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  • Received 18 October 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.046602

© 2012 American Physical Society

Erratum

Erratum: Charge Transport in Weyl Semimetals [Phys. Rev. Lett. 108, 046602 (2012)]

Pavan Hosur, Siddharth A. Parameswaran, and Ashvin Vishwanath
Phys. Rev. Lett. 123, 079901 (2019)

Authors & Affiliations

Pavan Hosur1, S. A. Parameswaran1, and Ashvin Vishwanath1,2

  • 1Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA
  • 2Materials Science Division, Lawrence Berkeley National Laboratories, Berkeley, California 94720, USA

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Issue

Vol. 108, Iss. 4 — 27 January 2012

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