{
  "id": "1311.6861",
  "version": "v2",
  "published": "2013-11-27T02:40:25.000Z",
  "updated": "2013-12-03T02:22:35.000Z",
  "title": "Klein tunneling and cone transport in AA-stacked bilayer graphene",
  "authors": [
    "Matthew Sanderson",
    "Yee Sin Ang",
    "Chao Zhang"
  ],
  "comment": "11 pages, 7 figures; corrected typo, final submitted version",
  "journal": "Phys. Rev. B 88, 245404 (2013)",
  "doi": "10.1103/PhysRevB.88.245404",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We investigate the quantum tunneling of electrons in an AA-stacked bilayer graphene (BLG) $n$-$p$ junction and $n$-$p$-$n$ junction. We show that Klein tunneling of an electron can occur in this system. The quasiparticles are not only chiral but are additionally described by a `cone index'. Due to the orthogonality of states with different cone indexes, electron transport across a potential barrier must strictly conserve the cone index and this leads to the protected cone transport which is unique in AA-stacked BLG. Together with the negative refraction of electrons, electrons residing in different cones can be spatially separated according to their cone index when transmitted across an $n$-$p$ junction. This suggests the possibility of `cone-tronic' devices based on AA-stacked BLG. Finally, we calculate the junction conductance of the system.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-12-03T02:22:35.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "71.70.Ej",
      "73.21.Fg",
      "79.40.+z"
    ],
    "keywords": [
      "aa-stacked bilayer graphene",
      "klein tunneling",
      "aa-stacked blg",
      "cone indexes",
      "electron transport"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2013,
      "month": "Dec",
      "volume": 88,
      "number": 24,
      "pages": 245404
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvB..88x5404S"
    }
  }
}