{
  "id": "cond-mat/0006497",
  "version": "v1",
  "published": "2000-06-30T16:13:54.000Z",
  "updated": "2000-06-30T16:13:54.000Z",
  "title": "Spin-splitting in GaAs 2D holes",
  "authors": [
    "S. J. Papadakis",
    "E. P. De Poortere",
    "M. Shayegan",
    "R. Winkler"
  ],
  "comment": "To be published in Physica E, as part of the proceedings of the 11th International Winterschool on New Developments in Solid State Physics held in Mauterndorf, Austria, February, 2000",
  "journal": "Physica E 9, 31 (2001)",
  "doi": "10.1016/S1386-9477(00)00174-0",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We present quantitative measurements and calculations of the spin-orbit induced zero-magnetic-field spin-splitting in two-dimensional (2D) hole systems in modulation-doped GaAs (311)A quantum wells. The results show that the splitting is large and tunable. In particular, via a combination of back- and front-gate biases, we can tune the splitting while keeping the 2D hole density constant. The data also reveal a surprising result regarding the magnetoresistance (Shubnikov-de Haas) oscillations in a 2D system with spin-split energy bands: the frequencies of the oscillations are {\\it not} simply related to the population of the spin-subbands. Next we concentrate on the metallic-like behavior observed in these 2D holes and its relation to spin-splitting. The data indicate that the metallic behavior is more pronounced when two spin-subbands with unequal populations are occupied. Our measurements of the magnetoresistance of these 2D hole systems with an in-plane magnetic field corroborate this conclusion: while the system is metallic at zero magnetic field, it turns insulating when one of the spin-subbands is depopulated at high magnetic field.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2000-06-30T16:13:54.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gaas 2d holes",
      "in-plane magnetic field corroborate",
      "2d hole density constant",
      "spin-subbands",
      "spin-split energy bands"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}