{
  "id": "1407.5717",
  "version": "v2",
  "published": "2014-07-22T02:58:35.000Z",
  "updated": "2014-11-03T04:49:51.000Z",
  "title": "Electrical transport through a quantum dot side-coupled to a topological superconductor",
  "authors": [
    "Yu-Li Lee"
  ],
  "comment": "7 pages, 8 figures",
  "journal": "J. Phys: Condens. Matter 26, 455702 (2014)",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "We propose to measure the differential conductance $G$ as a function of the bias $V$ for a quantum dot side-coupled to a topological superconductor to detect the existence of the chiral Majorana edge states. It turns out that $G$ for the spinless dot is an oscillatory (but not periodic) function of $eV$ due to the coupling to the chiral Majorana edge states, where $-e$ is the charge carried by the electron. The behavior of $G$ versus $eV$ is distinguished from the one for a multi-level dot in three respects. First of all, due to the coupling to the topological superconductor, the value of $G$ will shift upon adding or removing a vortex in the topological superconductor. Next, for an off-resonance dot, the conductance peak in the present case takes a universal value $e^2/(2h)$ when the two leads are symmetrically coupled to the dot. Finally, for a symmetric setup and an on-resonance dot, the conductance peak will approach the same universal value $e^2/(2h)$ at large bias.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-07-22T02:58:35.000Z",
      "comment": "6 pages, 8 figures",
      "journal": null,
      "doi": null
    },
    {
      "version": "v2",
      "updated": "2014-11-03T04:49:51.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "topological superconductor",
      "quantum dot",
      "chiral majorana edge states",
      "electrical transport",
      "universal value"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0953-8984/26/45/455702",
      "journal": "Journal of Physics Condensed Matter",
      "year": 2014,
      "month": "Nov",
      "volume": 26,
      "number": 45,
      "pages": 455702
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014JPCM...26S5702L"
    }
  }
}