{
  "id": "0803.0568",
  "version": "v1",
  "published": "2008-03-05T15:06:14.000Z",
  "updated": "2008-03-05T15:06:14.000Z",
  "title": "Measurement of Aharonov-Bohm oscillations in mesoscopic metallic rings in the presence of high-frequency electromagnetic fields",
  "authors": [
    "Josef-Stefan Wenzler",
    "Pritiraj Mohanty"
  ],
  "comment": "5 pages, two figures, one table, two-column format.To be published in Phys. Rev. B (rapid comm.). Related papers can be found at http://nano.bu.edu/",
  "doi": "10.1103/PhysRevB.77.121102",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We report measurements of Aharonov-Bohm oscillations in normal metal rings in the presence of high frequency electromagnetic fields. The power dependence of the decoherence time scale tau_phi(P) agrees well with the anticipated power law tau_phi proportional to P^(-1/5) when the field-induced decoherence rate tau_ac^(-1) is large compared to the intrinsic decoherence rate tau_o^(-1), measured in the absence of external fields. As theoretically expected, we observe a decline in field-induced decoherence when tau_ac^(-1)<=tau_o^(-1). The frequency dependence of tau_phi shows a minimum in the oscillation amplitude at a characteristic frequency, omega_(ac)=1/tau_(o), where tau_(o) is evaluated from the oscillation amplitude using the standard mesoscopic theory. Both the suppression in the oscillation amplitude and the concomitant change in conductivity allow a direct measurement of the intrinsic decoherence time scale.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2008-03-05T15:06:14.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.-b",
      "03.65.Yz",
      "73.43.Qt"
    ],
    "keywords": [
      "high-frequency electromagnetic fields",
      "mesoscopic metallic rings",
      "aharonov-bohm oscillations",
      "oscillation amplitude",
      "measurement"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2008,
      "month": "Mar",
      "volume": 77,
      "number": 12,
      "pages": 121102
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008PhRvB..77l1102W"
    }
  }
}