{
  "id": "1605.08673",
  "version": "v1",
  "published": "2016-05-27T14:43:34.000Z",
  "updated": "2016-05-27T14:43:34.000Z",
  "title": "Selective transmission of quantum Hall edge channels in graphene",
  "authors": [
    "Katrin Zimmermann",
    "Anna Jordan",
    "Frédéric Gay",
    "Kenji Watanabe",
    "Takashi Taniguchi",
    "Zheng Han",
    "Vincent Bouchiat",
    "Hermann Sellier",
    "Benjamin Sacépé"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Charge carriers in the quantum Hall regime propagate via one-dimensional conducting channels that form along the edge of a two-dimensional electron gas. Controlling their transmission through a gate-tunable constriction that spatially confines electron transport is key for many coherent transport experiments. However, in graphene, tailoring constrictions with electrostatic gates remains challenging due to the formation of p-n junctions below gate electrodes along which electron and hole edge channels co-propagate and mix. Here we report the demonstration of confinement and gate-tunable transmission of quantum Hall edge channels in a split-gate defined quantum point contact in high mobility graphene. We identify the exact gate configurations necessary for quantum point contact operation without electron-hole mixing, and for realizing full channel pinch-off. Our work opens the door to a wealth of electron quantum optics experiments in the quantum Hall regime of graphene.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-05-27T14:43:34.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum hall edge channels",
      "selective transmission",
      "exact gate configurations necessary",
      "electron quantum optics experiments",
      "hole edge channels co-propagate"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}