{
  "id": "1908.07629",
  "version": "v1",
  "published": "2019-08-20T22:09:07.000Z",
  "updated": "2019-08-20T22:09:07.000Z",
  "title": "Spin-polarized currents in corrugated graphene nanoribbons",
  "authors": [
    "Hernán Santos",
    "A. Latgé",
    "L. Brey",
    "Leonor Chico"
  ],
  "comment": "9 pages, 9 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We investigate the production of spin-polarized currents in corrugated graphene nanoribbons. We model the corrugation as multiple regions with Rashba spin-orbit interactions. Concave and convex curvatures are modeled as Rashba regions with opposite signs. Numerical examples for different separated Rashba-zone geometries calculated within the tight-binding approximation are provided. Remarkably, the spin-polarized current in a system with several Rashba areas can be enhanced with respect to the case with a single Rashba part of the same total area. The enhancement is larger for configurations with multiple regions with the same Rashba sign. Additionally, we relate the appearance of the spin-polarized currents to novel symmetry relations between the spin-dependent conductances. These symmetries turn out to be a combination of different symmetry operations in real and spin spaces, as those occurring in non-planar systems like carbon nanotubes. Our results show that two-dimensional devices with Rashba spin-orbit interaction can be used as excellent spintronic devices in an all-electrical or mechanical setup.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-08-20T22:09:07.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "corrugated graphene nanoribbons",
      "spin-polarized current",
      "rashba spin-orbit interaction",
      "multiple regions",
      "single rashba part"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}