{
  "id": "1210.7241",
  "version": "v2",
  "published": "2012-10-26T20:00:05.000Z",
  "updated": "2013-02-04T22:31:27.000Z",
  "title": "2D compressibility of surface states on 3D topological insulators",
  "authors": [
    "D. S. L. Abergel",
    "S. Das Sarma"
  ],
  "comment": "5 pages, 5 figures, RevTeX",
  "journal": "Phys. Rev. B 87, 041407(R) (2013)",
  "doi": "10.1103/PhysRevB.87.041407",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We develop a theory for the compressibility of the surface states of 3D topological insulators and propose that surface probes of the compressibility via scanning single electron transistor microscopy will be a straightforward way to access the topological states without interference from the bulk states. We describe the single-particle nature of the surface states taking into account an accurate Hamiltonian for the bands and then include the contribution from electron--electron interactions and discuss the implications of the ultra-violet cutoff, including the universality of the exchange contribution when expressed in dimensionless units. We also compare the theory with experimentally obtained d{\\mu}/dn as extracted from angle-resolved photoemission spectroscopy measurements. Finally, we point out that interaction-driven renormalization of the Fermi velocity may be discernible via this technique.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-02-04T22:31:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "3d topological insulators",
      "surface states",
      "2d compressibility",
      "scanning single electron transistor microscopy",
      "angle-resolved photoemission spectroscopy measurements"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012arXiv1210.7241A"
    }
  }
}