{
  "id": "cond-mat/0610709",
  "version": "v1",
  "published": "2006-10-25T22:13:32.000Z",
  "updated": "2006-10-25T22:13:32.000Z",
  "title": "Radiation-induced current in quantum wires with side-coupled nano-rings",
  "authors": [
    "Yuriy V. Pershin",
    "Carlo Piermarocchi"
  ],
  "comment": "7 pages, 6 figures",
  "doi": "10.1103/PhysRevB.75.035326",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Photocurrent generation is studied in a system composed of a quantum wire with side-coupled quantum rings. The current generation results from the interplay of the particular geometry of the system and the use of circularly polarized radiation. We study the energy-momentum conservation for optical transitions involving electrons moving forwards and backwards in the wire. Due to the lack of time-reversal symmetry in the radiation, the optical transitions depend on the direction of motion of the electrons, leading to a current at zero bias voltage. The photocurrent increases with the number of rings within a wide range of physical parameters. A weak non-linear dependence of the current in the number of rings, related to quantum interference effects, is also predicted. This geometry suggests a scalable method for the generation of sizeable photocurrents based on nanoscale components.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-10-25T22:13:32.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum wire",
      "side-coupled nano-rings",
      "radiation-induced current",
      "quantum interference effects",
      "current generation results"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}