{
  "id": "1612.08934",
  "version": "v1",
  "published": "2016-12-28T17:28:57.000Z",
  "updated": "2016-12-28T17:28:57.000Z",
  "title": "Photon-assisted transport in bilayer graphene flakes",
  "authors": [
    "D. Zambrano",
    "L. Rosales",
    "A. Latgé",
    "M. Pacheco",
    "P. A. Orellana"
  ],
  "comment": "7 pages and 9 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "The electronic conductance of graphene-based bilayer flake systems reveal different quantum interference effects, such as Fabry-P\\'erot resonances and sharp Fano antiresonances on account of competing electronic paths through the device. These properties may be exploited to obtain spin-polarized currents when the same nanostructure is deposited above a ferromagnetic insulator. Here we study how the spin-dependent conductance is affected when a time-dependent gate potential is applied to the bilayer flake. Following a Tien-Gordon formalism we explore how to modulate the transport properties of such systems via appropriate choices of the $ac$-field gate parameters. The presence of the oscillating field opens the possibility of tuning the original antiresonances for a large set of field parameters. We show that interference patterns can be partially or fully removed by the time-dependent gate voltage. The results are reflected in the corresponding weighted spin polarization which can reach maximum values for a given spin component. We found that differential conductance maps as functions of bias and gate potentials show interference patterns for different $ac$-field parameter configurations. The proposed bilayer graphene flake systems may be used as a frequency detector in the THz range.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-12-28T17:28:57.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "photon-assisted transport",
      "interference patterns",
      "gate potential",
      "bilayer graphene flake systems",
      "time-dependent gate"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}