{
  "id": "2208.03414",
  "version": "v1",
  "published": "2022-08-06T00:28:23.000Z",
  "updated": "2022-08-06T00:28:23.000Z",
  "title": "Driving a pure spin current from nuclear-polarization gradients",
  "authors": [
    "Nicholas J. Harmon",
    "Michael E. Flatté"
  ],
  "comment": "5 pages, 3 figures. Accepted in Phys. Rev. B",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "A pure spin current is predicted to occur when an external magnetic field and a linearly inhomogeneous spin-only field are appropriately aligned. Under these conditions (such as originate from nuclear contact hyperfine fields that do not affect orbital motion) a linear, spin-dependent dispersion for free electrons emerges from the Landau Hamiltonian. The result is that spins of opposite orientation flow in opposite directions giving rise to a pure spin current. A classical model of the spin and charge dynamics reveals intuitive aspects of the full quantum mechanical solution. We propose optical orientation or electrical polarization experiments to demonstrate this outcome.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-08-06T00:28:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "pure spin current",
      "nuclear-polarization gradients",
      "nuclear contact hyperfine fields",
      "full quantum mechanical solution",
      "opposite directions giving rise"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}