{
  "id": "1107.1903",
  "version": "v2",
  "published": "2011-07-10T21:39:40.000Z",
  "updated": "2011-09-17T11:43:03.000Z",
  "title": "Chiral superconductivity from repulsive interactions in doped graphene",
  "authors": [
    "Rahul Nandkishore",
    "Leonid Levitov",
    "Andrey Chubukov"
  ],
  "journal": "Nature Physics 8, 158-163 (2012)",
  "doi": "10.1038/nphys2208",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "We identify graphene as a system where chiral superconductivity can be realized. Chiral superconductivity involves a pairing gap that winds in phase around the Fermi surface, breaking time reversal symmetry. We consider a unique situation arising in graphene at a specific level of doping, where the density of states is singular, strongly enhancing the critical temperature T_c. At this doping level, the Fermi surface is nested, allowing superconductivity to emerge from repulsive electron-electron interactions. We show using a renormalization group method that superconductivity dominates over all competing orders for any choice of weak repulsive interactions. Superconductivity develops in a doubly degenerate, spin singlet channel, and a mean field calculation indicates that the superconductivity is of a chiral d+id type. We therefore predict that doped graphene can provide experimental realization of spin-singlet chiral superconductivity.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-09-17T11:43:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "repulsive interactions",
      "doped graphene",
      "fermi surface",
      "mean field calculation",
      "spin singlet channel"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Nature Physics",
      "year": 2012,
      "month": "Feb",
      "volume": 8,
      "number": 2,
      "pages": 158
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012NatPh...8..158N"
    }
  }
}