{
  "id": "1707.04575",
  "version": "v1",
  "published": "2017-07-14T17:53:53.000Z",
  "updated": "2017-07-14T17:53:53.000Z",
  "title": "Direct observation of exchange-driven spin interactions in one-dimensional system",
  "authors": [
    "Chengyu Yan",
    "Sanjeev Kumar",
    "Kalarikad Thomas",
    "Michael Pepper",
    "Patrick See",
    "Ian Farrer",
    "David Ritchie",
    "J. P. Griffiths",
    "G. A. C. Jones"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We present experimental results of transverse electron focusing measurements performed on an n-type GaAs based mesoscopic device consisting of one-dimensional (1D) quantum wires as injector and detector. We show that non-adiabatic injection of 1D electrons at a conductance of e$^2$/h results in a single first focusing peak, which on gradually increasing the injector conductance up to 2e$^2$/h , produces asymmetric two sub-peaks in the first focusing peak, each sub-peak representing the population of spin-state arising from the spatially separated spins in the injector. Further increasing the conductance flips the spin-states in the 1D channel thus reversing the asymmetry in the sub-peaks. On applying a source-drain bias, the spin-gap, so obtained, can be resolved thus providing evidence of exchange interaction induced spin polarisation in the 1D systems.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-07-14T17:53:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "exchange-driven spin interactions",
      "direct observation",
      "one-dimensional system",
      "electron focusing measurements",
      "first focusing peak"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}