{
  "id": "cond-mat/0109145",
  "version": "v1",
  "published": "2001-09-07T14:09:30.000Z",
  "updated": "2001-09-07T14:09:30.000Z",
  "title": "Double quantum dots: interdot interactions, co-tunneling, and Kondo resonances without spin",
  "authors": [
    "Qing-feng Sun",
    "Hong Guo"
  ],
  "comment": "12 pages, 3 figures, LaTex",
  "journal": "Phys. Rev. B 66, 155308 (2002).",
  "doi": "10.1103/PhysRevB.66.155308",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.str-el"
  ],
  "abstract": "We show that through an interdot off-site electron correlation in a double quantum-dot (DQD) device, Kondo resonances emerge in the local density of states without the electron spin-degree of freedom. We identify the physical mechanism behind this phenomenon: rather than forming a spin singlet in the device as required in the conventional Kondo physics, we found that exchange of electron position between the two quantum dots, together with the off-site Coulomb interaction, are sufficient to induce the Kondo resonance. Due to peculiar co-tunneling events, the Kondo resonance in one dot may be pinned at the chemical potential of the other one.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2001-09-07T14:09:30.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "double quantum dots",
      "interdot interactions",
      "interdot off-site electron correlation",
      "off-site coulomb interaction",
      "conventional kondo physics"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "LaTeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}