{
  "id": "cond-mat/0104091",
  "version": "v1",
  "published": "2001-04-05T11:59:43.000Z",
  "updated": "2001-04-05T11:59:43.000Z",
  "title": "Kondo effect in coupled quantum dots under magnetic fields",
  "authors": [
    "Tomosuke Aono",
    "Mikio Eto"
  ],
  "comment": "6 pages, 3 figures",
  "journal": "Phys. Rev. B 64, 073307 (2001)",
  "doi": "10.1103/PhysRevB.64.073307",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The Kondo effect in coupled quantum dots is investigated theoretically under magnetic fields. We show that the magnetoconductance (MC) illustrates peak structures of the Kondo resonant spectra. When the dot-dot tunneling coupling $V_C$ is smaller than the dot-lead coupling $\\Delta$ (level broadening), the Kondo resonant levels appear at the Fermi level ($E_F$). The Zeeman splitting of the levels weakens the Kondo effect, which results in a negative MC. When $V_{C}$ is larger than $\\Delta$, the Kondo resonances form bonding and anti-bonding levels, located below and above $E_F$, respectively. We observe a positive MC since the Zeeman splitting increases the overlap between the levels at $E_F$. In the presence of the antiferromagnetic spin coupling between the dots, the sign of MC can change as a function of the gate voltage.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2001-04-05T11:59:43.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "coupled quantum dots",
      "kondo effect",
      "magnetic fields",
      "kondo resonant levels appear",
      "illustrates peak structures"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}