Fermi arc engineering at the interface between two Weyl semimetals

H. Ishida and A. Liebsch
Phys. Rev. B 98, 195426 – Published 19 November 2018

Abstract

We study localized electronic states at the interface between two semi-infinite Weyl semimetals by using a two-band model Hamiltonian. Specifically, we consider cases in which the surface projections of the Weyl nodes of the left system do not coincide with those on the right. We demonstrate that, depending on the position and chirality of the Weyl nodes of both semimetals, the Fermi arcs of the localized interface states can be formed between the surface projection of a Weyl node of the left crystal and the corresponding one of the right crystal, instead of connecting two surface-projected Weyl nodes of the same crystal. Because the resultant interface band disperses toward bulk states of both crystals, this mechanism may provide an efficient transport channel between the two Weyl semimetals comprising the interface.

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  • Received 14 September 2018

DOI:https://doi.org/10.1103/PhysRevB.98.195426

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

H. Ishida1 and A. Liebsch2

  • 1College of Humanities and Sciences, Nihon University, Tokyo 156-8550, Japan
  • 2Peter Grünberg Institut and Institute for Advanced Simulations, Forschungszentrum Jülich, 52425 Jülich, Germany

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Issue

Vol. 98, Iss. 19 — 15 November 2018

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