{
  "id": "1701.01660",
  "version": "v1",
  "published": "2017-01-06T15:20:29.000Z",
  "updated": "2017-01-06T15:20:29.000Z",
  "title": "Generic coexistence of Fermi arcs and Dirac cones on the surface of time-reversal invariant Weyl semimetals",
  "authors": [
    "Alexander Lau",
    "Jeroen van den Brink",
    "Carmine Ortix"
  ],
  "comment": "5 pages + Supplemental Material",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The hallmark of Weyl semimetals is the existence of open constant-energy contours on their surface -- the so-called Fermi arcs -- connecting Weyl points. Here, we show that for time-reversal symmetric realizations of Weyl semimetals these Fermi arcs generically coexist with closed Fermi pockets originating from surface Dirac cones pinned to time-reversal invariant momenta. The existence of Fermi pockets is required for certain Fermi-arc connectivities due to additional restrictions imposed by the six $\\mathbb{Z}_2$ topological invariants characterizing a generic time-reversal invariant Weyl semimetal. We show that a change of the Fermi-arc connectivity generally leads to a different topology of the surface Fermi surface, which is regulated by a Lifshitz transition. We further identify universal features of this coexistence in quasi-particle interference spectra that are experimentally accessible by scanning-tunneling spectroscopy.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-01-06T15:20:29.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dirac cones",
      "generic coexistence",
      "generic time-reversal invariant weyl semimetal",
      "fermi pockets",
      "fermi-arc connectivity"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}