{
  "id": "1602.06519",
  "version": "v1",
  "published": "2016-02-21T11:30:57.000Z",
  "updated": "2016-02-21T11:30:57.000Z",
  "title": "Electrical control of intervalley scattering in graphene via the charge state of defects",
  "authors": [
    "Baoming Yan",
    "Qi Han",
    "Zhenzhao Jia",
    "Jingjing Niu",
    "Tuocheng Cai",
    "Dapeng Yu",
    "Xiaosong Wu"
  ],
  "comment": "13 pages, 4 figures",
  "journal": "Phys. Rev. B 93, R041407(2016)",
  "doi": "10.1103/PhysRevB.93.041407",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We study the intervalley scattering in defected graphene by low-temperature transport measurements. The scattering rate is strongly suppressed when defects are charged. This finding highlights \"screening\" of the short-range part of a potential by the long-range part. Experiments on calcium-adsorbed graphene confirm the role of a long-range Coulomb potential. This effect is applicable to other multivalley systems, provided that the charge state of a defect can be electrically tuned. Our result provides a means to electrically control valley relaxation and has important implications in valley dynamics in valleytronic materials.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-02-21T11:30:57.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "charge state",
      "intervalley scattering",
      "electrical control",
      "electrically control valley relaxation",
      "long-range coulomb potential"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}