{
  "id": "1705.06827",
  "version": "v1",
  "published": "2017-05-18T23:05:49.000Z",
  "updated": "2017-05-18T23:05:49.000Z",
  "title": "Spintronic signatures of Klein tunneling in topological insulators",
  "authors": [
    "Yunkun Xie",
    "Yaohua Tan",
    "Avik W. Ghosh"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Klein tunneling, the perfect transmission of normally incident Dirac electrons across a potential barrier, has been widely studied in graphene and explored to design switches, albeit indirectly. We show that Klein tunneling maybe easier to detect for spin-momentum locked electrons crossing a PN junction along a three-dimensional topological insulator surface. In these topological insulator PN junctions (TIPNJs), the spin texture and momentum distribution of transmitted electrons can be measured electrically using a ferromagnetic probe for varying gate voltages and angles of current injection. Based on transport models across a TIPNJ, we show that the asymmetry in the potentiometric signal between PP and PN junctions and its overall angular dependence serve as a direct signature of Klein tunneling.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-05-18T23:05:49.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "klein tunneling",
      "spintronic signatures",
      "overall angular dependence serve",
      "normally incident dirac electrons",
      "topological insulator pn junctions"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}