{
  "id": "1310.7118",
  "version": "v2",
  "published": "2013-10-26T14:38:03.000Z",
  "updated": "2014-04-15T17:09:30.000Z",
  "title": "Phase-sensitive transport at a normal metal-superconductor interface close to a Josephson junction",
  "authors": [
    "David Gosselin",
    "Gaston Hornecker",
    "Régis Mélin",
    "Denis Feinberg"
  ],
  "comment": "8 pages, 10 figures, 1 table",
  "journal": "Phys. Rev. B 89, 075415 (2014)",
  "doi": "10.1103/PhysRevB.89.075415",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "Phase- and voltage bias-sensitive quasiparticle transport at a double $NIS_1IS_2$ interface is considered. The barriers $I$ range from tunnel to transparent, and the intermediate region $S_1$ has a width comparable to the superconducting coherence length. A phase difference $\\varphi$ is applied to the Josephson junction $S_1IS_2$. The normal and Andreev reflections at the $NIS_1$ interface become $\\varphi$-sensitive, and transport is governed by interferences within the narrow $S_1$ region, both in the normal and anomalous channels. The subgap conductance is separately (energy $E$)- and (phase $\\varphi$)- symmetric. Above the superconducting gap, the conductance is in general not symmetric even if $(E,\\varphi)$ is changed in $(-E,-\\varphi)$, but the symmetry is restored by averaging Fermi oscillations. The Tomasch oscillations are amplified by the phase difference. The subgap conductance exhibits a resonant structure at the energy of the Andreev bound states (ABS) of the $S_1IS_2$ junction, providing a side-spectroscopy of such states. Depending on the relative transparencies of the junctions, the resonance can increase or reduce the conductance, and it can even vanish for $\\varphi=\\pi$, featuring total reflection of quasiparticles at $NS_1$ by the ABS at $S_1S_2$.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2014-04-15T17:09:30.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "74.78.Na",
      "74.45.+c"
    ],
    "keywords": [
      "normal metal-superconductor interface close",
      "josephson junction",
      "phase-sensitive transport",
      "subgap conductance",
      "phase difference"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2014,
      "month": "Feb",
      "volume": 89,
      "number": 7,
      "pages": "075415"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvB..89g5415G"
    }
  }
}