{
  "id": "0707.3626",
  "version": "v3",
  "published": "2007-07-24T19:03:56.000Z",
  "updated": "2007-09-08T11:28:24.000Z",
  "title": "Intrinsic spin-Hall accumulation in honeycomb lattices: Band structure effects",
  "authors": [
    "Ming-Hao Liu",
    "Gustav Bihlmayer",
    "Stefan Blügel",
    "Ching-Ray Chang"
  ],
  "comment": "4 pages, 4 figures",
  "journal": "Phys. Rev. B 76, 121301(R) (2007)",
  "doi": "10.1103/PhysRevB.76.121301",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Local spin and charge densities on a two-dimensional honeycomb lattice are calculated by the Landauer-Keldysh formalism (LKF). Through the empirical tight-binding method, we show how the realistic band structure can be brought into the LKF. Taking the Bi(111) surface, on which strong surface states and Rashba spin-orbit coupling are present [Phys. Rev. Lett. 93, 046403 (2004)], as a numeric example, we show typical intrinsic spin-Hall accumulation (ISHA) patterns thereon. The Fermi-energy-dependence of the spin and charge transport in two-terminal nanostructure samples is subsequently analyzed. By changing E_{F}, we show that the ISHA pattern is nearly isotropic (free-electron-like) only when E_{F} is close to the band bottom, and is sensitive/insensitive to E_{F} for the low/high bias regime with such E_{F}. With E_{F} far from the band bottom, band structure effects thus enter the ISHA patterns and the transport direction becomes significant.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2007-09-08T11:28:24.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.-b",
      "72.25.-b",
      "71.70.Ej"
    ],
    "keywords": [
      "band structure effects",
      "two-dimensional honeycomb lattice",
      "two-terminal nanostructure samples",
      "realistic band structure",
      "strong surface states"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2007,
      "month": "Sep",
      "volume": 76,
      "number": 12,
      "pages": 121301
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2007PhRvB..76l1301L"
    }
  }
}