{
  "id": "0911.2042",
  "version": "v1",
  "published": "2009-11-11T03:21:16.000Z",
  "updated": "2009-11-11T03:21:16.000Z",
  "title": "Quantum transport in a mesoscopic ring: Evidence of an OR gate",
  "authors": [
    "Santanu K. Maiti"
  ],
  "comment": "7 pages, 5 figures",
  "journal": "Solid State Communications, Volume 149, Issues 39-40, October 2009, Pages 1684-1688",
  "doi": "10.1016/j.ssc.2009.06.018",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "We explore OR gate response in a mesoscopic ring threaded by a magnetic flux $\\phi$. The ring is symmetrically attached to two semi-infinite one-dimensional metallic electrodes and two gate voltages, viz, $V_a$ and $V_b$, are applied in one arm of the ring which are treated as the two inputs of the OR gate. All the calculations are based on the tight-binding model and the Green's function method, which numerically compute the conductance-energy and current-voltage characteristics as functions of the gate voltages, ring-to-electrodes coupling strengths and magnetic flux. Our theoretical study shows that, for $\\phi=\\phi_0/2$ ($\\phi_0=ch/e$, the elementary flux-quantum) a high output current (1) (in the logical sense) appears if one or both the inputs to the gate are high (1), while if neither input is high (1), a low output current (0) appears. It clearly demonstrates the OR gate behavior and this aspect may be utilized in designing the electronic logic gate.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-11-11T03:21:16.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "mesoscopic ring",
      "quantum transport",
      "semi-infinite one-dimensional metallic electrodes",
      "magnetic flux",
      "gate voltages"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Solid State Communications",
      "year": 2009,
      "month": "Oct",
      "volume": 149,
      "number": 39,
      "pages": 1684
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009SSCom.149.1684M"
    }
  }
}