{
  "id": "0812.1577",
  "version": "v1",
  "published": "2008-12-08T21:45:43.000Z",
  "updated": "2008-12-08T21:45:43.000Z",
  "title": "Model for the magnetoresistance and Hall coefficient of inhomogeneous graphene",
  "authors": [
    "Rakesh P. Tiwari",
    "D. Stroud"
  ],
  "comment": "5 pages, 4 figures",
  "journal": "PhysRevB.79.165408 (2009)",
  "doi": "10.1103/PhysRevB.79.165408",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We show that when bulk graphene breaks into n-type and p-type puddles, the in-plane resistivity becomes strongly field dependent in the presence of a perpendicular magnetic field, even if homoge- neous graphene has a field-independent resistivity. We calculate the longitudinal resistivity \\rho_{xx} and Hall resistivity \\rho_{xy} as a function of field for this system, using the effective-medium approximation. The conductivity tensors of the individual puddles are calculated using a Boltzmann approach suit- able for the band structure of graphene near the Dirac points. The resulting resistivity agrees well with experiment, provided that the relaxation time is weakly field-dependent. The calculated Hall resistivity has the sign of the majority carrier and vanishes when there are equal number of n and p type puddles.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2008-12-08T21:45:43.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.20.My",
      "75.47.-m",
      "73.50.Jt",
      "72.80.Ng"
    ],
    "keywords": [
      "hall coefficient",
      "inhomogeneous graphene",
      "magnetoresistance",
      "perpendicular magnetic field",
      "bulk graphene breaks"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2009,
      "month": "Apr",
      "volume": 79,
      "number": 16,
      "pages": 165408
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvB..79p5408T"
    }
  }
}