{
  "id": "1311.0659",
  "version": "v1",
  "published": "2013-11-04T12:03:25.000Z",
  "updated": "2013-11-04T12:03:25.000Z",
  "title": "Non-local spectroscopy of Andreev bound states",
  "authors": [
    "Jens Schindele",
    "Andreas Baumgartner",
    "Romain Maurand",
    "Markus Weiss",
    "Christian Schönenberger"
  ],
  "journal": "Phys. Rev. B, 89, 045422 (2014)",
  "doi": "10.1103/PhysRevB.89.045422",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We experimentally investigate Andreev bound states (ABSs) in a carbon nanotube quantum dot (QD) connected to a superconducting Nb lead (S). A weakly coupled normal metal contact acts as a tunnel probe that measures the energy dispersion of the ABSs. Moreover we study the response of the ABS to non-local transport processes, namely Cooper pair splitting and elastic co-tunnelling, that are enabled by a second QD fabricated on the same nanotube on the opposite side of S. We find an appreciable non-local conductance with a rich structure, including a sign reversal at the ground state transition from the ABS singlet to a degenerate magnetic doublet. We describe our device by a simple rate equation model that captures the key features of our observations and demonstrates that the sign of the non-local conductance is a measure for the charge distribution of the ABS, given by the respective Bogoliubov-de Gennes amplitudes $u$ and $v$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-11-04T12:03:25.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "74.45.+c",
      "73.23.-b",
      "73.21.La",
      "73.63.Nm"
    ],
    "keywords": [
      "andreev bound states",
      "non-local spectroscopy",
      "coupled normal metal contact acts",
      "non-local conductance",
      "carbon nanotube quantum dot"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2014,
      "month": "Jan",
      "volume": 89,
      "number": 4,
      "pages": "045422"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvB..89d5422S"
    }
  }
}