{
  "id": "0909.5295",
  "version": "v1",
  "published": "2009-09-29T08:56:58.000Z",
  "updated": "2009-09-29T08:56:58.000Z",
  "title": "Observation of orientation- and $k$-dependent Zeeman spin-splitting in hole quantum wires on (100)-oriented AlGaAs/GaAs heterostructures",
  "authors": [
    "J. C. H. Chen",
    "O. Klochan",
    "A. P. Micolich",
    "A. R. Hamilton",
    "T. P. Martin",
    "L. H. Ho",
    "U. Zuelicke",
    "D. Reuter",
    "A. D. Wieck"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We study the Zeeman spin-splitting in hole quantum wires oriented along the $[011]$ and $[01\\bar{1}]$ crystallographic axes of a high mobility undoped (100)-oriented AlGaAs/GaAs heterostructure. Our data shows that the spin-splitting can be switched `on' (finite $g^{*}$) or `off' (zero $g^{*}$) by rotating the field from a parallel to a perpendicular orientation with respect to the wire, and the properties of the wire are identical for the two orientations with respect to the crystallographic axes. We also find that the $g$-factor in the parallel orientation decreases as the wire is narrowed. This is in contrast to electron quantum wires, where the $g$-factor is enhanced by exchange effects as the wire is narrowed. This is evidence for a $k$-dependent Zeeman splitting that arises from the spin-3/2 nature of holes.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-09-29T08:56:58.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "algaas/gaas heterostructure",
      "dependent zeeman spin-splitting",
      "crystallographic axes",
      "observation",
      "parallel orientation decreases"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/1367-2630/12/3/033043",
      "journal": "New Journal of Physics",
      "year": 2010,
      "month": "Mar",
      "volume": 12,
      "number": 3,
      "pages": "033043"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010NJPh...12c3043C"
    }
  }
}