{
  "id": "cond-mat/0011201",
  "version": "v1",
  "published": "2000-11-12T23:24:07.000Z",
  "updated": "2000-11-12T23:24:07.000Z",
  "title": "Josephson Coupling through a Quantum Dot",
  "authors": [
    "A. V. Rozhkov",
    "D. P. Arovas",
    "F. Guinea"
  ],
  "comment": "9 pages; 3 encapsulated PostScript figures",
  "doi": "10.1103/PhysRevB.64.233301",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "We derive, via fourth order perturbation theory, an expression for the Josephson current through a gated interacting quantum dot. We analyze our expression for two different models of the superconductor-dot-superconductor (SDS) system. When the matrix elements connecting dot and leads are featureless constants, we compute the Josephson coupling J_c as a function of the gate voltage and Coulomb interaction. In the diffusive dot limit, we compute the probability distribution P(J_c) of Josephson couplings. In both cases, pi junction behavior (J_c < 0) is possible, and is not simply dependent on the parity of the dot occupancy.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2000-11-12T23:24:07.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "josephson coupling",
      "fourth order perturbation theory",
      "matrix elements connecting dot",
      "pi junction behavior",
      "expression"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}