{
  "id": "0903.4085",
  "version": "v1",
  "published": "2009-03-24T15:16:48.000Z",
  "updated": "2009-03-24T15:16:48.000Z",
  "title": "Tuning non-linear charge transport between integer and fractional quantum Hall states",
  "authors": [
    "Stefano Roddaro",
    "Nicola Paradiso",
    "Vittorio Pellegrini",
    "Giorgio Biasiol",
    "Lucia Sorba",
    "Fabio Beltram"
  ],
  "comment": "4 pages, 3 figures, suppl.mat",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "Controllable point junctions between different quantum Hall phases are a necessary building block for the development of mesoscopic circuits based on fractionally-charged quasiparticles. We demonstrate how particle-hole duality can be exploited to realize such point-contact junctions. We show an implementation for the case filling factors $\\nu=1$ and $\\nu^*\\le1$ in which both the fractional filling $\\nu^*$ and the coupling strength can be finely and independently tuned. A peculiar crossover from insulating to conducting behavior as $\\nu^*$ goes from 1/3 to 1 is observed. These results highlight the key role played on inter-edge tunneling by local charge depletion at the point contact.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-03-24T15:16:48.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.43.Jn",
      "71.10.Pm",
      "73.21.Hb"
    ],
    "keywords": [
      "fractional quantum hall states",
      "tuning non-linear charge transport",
      "quantum hall phases",
      "local charge depletion",
      "point junctions"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevLett.103.016802",
      "journal": "Physical Review Letters",
      "year": 2009,
      "month": "Jul",
      "volume": 103,
      "number": 1,
      "pages": "016802"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvL.103a6802R"
    }
  }
}