{
  "id": "1708.00467",
  "version": "v1",
  "published": "2017-08-01T18:31:31.000Z",
  "updated": "2017-08-01T18:31:31.000Z",
  "title": "Strain manipulation of Majorana fermions in graphene armchair nanoribbons",
  "authors": [
    "Zhen-Hua Wang",
    "Eduardo V. Castro",
    "Hai-Qing Lin"
  ],
  "comment": "5 pages, 5 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.supr-con"
  ],
  "abstract": "Graphene nanoribbons with armchair edges are studied for externally enhanced, but realistic parameter values: enhanced Rashba spin-orbit coupling due to proximity to a transition metal dichalcogenide like WS$_{2}$, and enhanced Zeeman field due to exchange coupling with a magnetic insulator like EuS under applied magnetic field. The presence of s--wave superconductivity, induced either by proximity or by decoration with alkali metal atoms like Ca or Li, leads to a topological superconducting phase with Majorana end modes. The topological phase is highly sensitive to the application of uniaxial strain, with a transition to the trivial state above a critical strain well below $0.1\\%$. This sensitivity allows for real space manipulation of Majorana fermions by applying non-uniform strain profiles. Similar manipulation is also possible by applying inhomogeneous Zeeman field or chemical potential.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-08-01T18:31:31.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "graphene armchair nanoribbons",
      "majorana fermions",
      "strain manipulation",
      "real space manipulation",
      "realistic parameter values"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}