{
  "id": "2404.17887",
  "version": "v1",
  "published": "2024-04-27T12:49:16.000Z",
  "updated": "2024-04-27T12:49:16.000Z",
  "title": "Spin-dependent $π$$π^{\\ast}$ gap in graphene on a magnetic substrate",
  "authors": [
    "P. M. Sheverdyaeva",
    "G. Bihlmayer",
    "E. Cappelluti",
    "D. Pacilé",
    "F. Mazzola",
    "N. Atodiresei",
    "M. Jugovac",
    "I. Grimaldi",
    "G. Contini",
    "A. K. Kundu",
    "I. Vobornik",
    "J. Fujii",
    "P. Moras",
    "C. Carbone",
    "L. Ferrari"
  ],
  "comment": "6 pages, 4 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.other"
  ],
  "abstract": "We present a detailed analysis of the electronic properties of graphene/Eu/Ni(111). By using angle and spin-resolved photoemission spectroscopy and ab initio calculations, we show that the Eu-intercalation of graphene/Ni(111) restores the nearly freestanding dispersion of the $\\pi\\pi^\\ast$ Dirac cones at the K point with an additional lifting of the spin degeneracy due to the mixing of graphene and Eu states. The interaction with the magnetic substrate results in a large spin-dependent gap in the Dirac cones with a topological nature characterized by a large Berry curvature, and a spin-polarized van Hove singularity, whose closeness to the Fermi level gives rise to a polaronic band.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-04-27T12:49:16.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dirac cones",
      "large berry curvature",
      "ab initio calculations",
      "large spin-dependent gap",
      "magnetic substrate results"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}