{
  "id": "1104.0314",
  "version": "v2",
  "published": "2011-04-02T13:49:17.000Z",
  "updated": "2011-12-08T19:55:15.000Z",
  "title": "Gap opening in graphene by simple periodic inhomogeneous strain",
  "authors": [
    "I. I. Naumov",
    "A. M. Bratkovsky"
  ],
  "comment": "6 pages, 6 figures; (v2) added figures illustrating opening gap in Graphene mesh on BN, expanded analysis illustrating absence of pseudo-magnetic fields in deformed Graphene",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Using ab-initio methods, we show that the uniform deformation either leaves graphene (semi)metallic or opens up a small gap yet only beyond the mechanical breaking point of the graphene, contrary to claims in the literature based on tight-binding (TB) calculations. It is possible, however, to open up a global gap by a sine-like one-dimensional inhomogeneous deformation applied along any direction but the armchair one, with the largest gap for the corrugation along the zigzag direction (~0.5 eV) without any electrostatic gating. The gap opening has a threshold character with very sharp rise when the ratio of the amplitude A and the period of the sine wave deformation lambda exceeds (A/lambda)_c ~0.1 and the inversion symmetry is preserved, while it is threshold-less when the symmetry is broken, in contrast with TB-derived pseudo-magnetic field models.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-12-08T19:55:15.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.22.Pr",
      "62.25.-g",
      "81.05.ue"
    ],
    "keywords": [
      "simple periodic inhomogeneous strain",
      "gap opening",
      "one-dimensional inhomogeneous deformation",
      "sine wave deformation lambda exceeds"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.84.245444",
      "journal": "Physical Review B",
      "year": 2011,
      "month": "Dec",
      "volume": 84,
      "number": 24,
      "pages": 245444
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..84x5444N"
    }
  }
}