Scattering theory of the chiral magnetic effect in a Weyl semimetal: interplay of bulk Weyl cones and surface Fermi arcs

@article{Baireuther2015ScatteringTO,
  title={Scattering theory of the chiral magnetic effect in a Weyl semimetal: interplay of bulk Weyl cones and surface Fermi arcs},
  author={Paul Baireuther and Jimmy A. Hutasoit and Jakub Tworzydło and C. W. J. Beenakker},
  journal={New Journal of Physics},
  year={2015},
  volume={18}
}
We formulate a linear response theory of the chiral magnetic effect in a finite Weyl semimetal, expressing the electrical current density j induced by a slowly oscillating magnetic field B or chiral chemical potential μ in terms of the scattering matrix of Weyl fermions at the Fermi level. Surface conduction can be neglected in the infinite-system limit for δ j / δ μ , but not for δ j / δ B : the chirally circulating surface Fermi arcs give a comparable contribution to the bulk Weyl cones no… 

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