{
  "id": "1307.7992",
  "version": "v2",
  "published": "2013-07-30T14:18:43.000Z",
  "updated": "2013-11-09T15:48:41.000Z",
  "title": "Spin filtering and entanglement detection due to spin-orbit interaction in carbon nanotube cross-junctions",
  "authors": [
    "Francesco Mazza",
    "Bernd Braunecker",
    "Patrik Recher",
    "Alfredo Levy Yeyati"
  ],
  "comment": "14 pages, 8 figures. Final version",
  "journal": "Physical Review B 88, 195403 (2013)",
  "doi": "10.1103/PhysRevB.88.195403",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We demonstrate that due to their spin-orbit interaction carbon nanotube cross-junctions have attractive spin projective properties for transport. First, we show that the junction can be used as a versatile spin filter as a function of a backgate and a static external magnetic field. Switching between opposite spin filter directions can be achieved by small changes of the backgate potential, and a full polarization is generically obtained in an energy range close to the Dirac points. Second, we discuss how the spin filtering properties affect the noise correlators of entangled electron pairs, which allows us to obtain signatures of the type of entanglement that are different from the signatures in conventional semiconductor cross-junctions.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-11-09T15:48:41.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.63.Fg",
      "75.70.Tj",
      "72.25.-b",
      "72.70.+m"
    ],
    "keywords": [
      "entanglement detection",
      "spin-orbit interaction carbon nanotube cross-junctions",
      "static external magnetic field",
      "opposite spin filter directions",
      "spin filtering properties affect"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2013,
      "month": "Nov",
      "volume": 88,
      "number": 19,
      "pages": 195403
    },
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvB..88s5403M"
    }
  }
}