{
  "id": "cond-mat/0002050",
  "version": "v1",
  "published": "2000-02-03T09:39:21.000Z",
  "updated": "2000-02-03T09:39:21.000Z",
  "title": "Fermi's golden rule in a mesoscopic metal ring",
  "authors": [
    "Peter Kopietz",
    "Axel Voelker"
  ],
  "comment": "this is an expanded and completely revised version of our withdrawn manuscript cond-mat/9712303",
  "journal": "Superlattices and Microstructures 26, 368 (1999)",
  "doi": "10.1006/spmi.1999.0790",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.dis-nn"
  ],
  "abstract": "We examine the time-dependent non-equilibrium current in a mesoscopic metal ring threaded by a static magnetic flux phi that is generated by a time-dependent electric field oscillating with frequency omega. We show that in quadratic order in the field there are three fundamentally different contributions to the current. (a) A time-independent contribution which can be obtained from a thermodynamic derivative. (b) A term increasing linearly in time that can be understood in terms of Fermi's golden rule. The derivation of this term requires a careful treatment of the infinitesimal imaginary parts that are added to the real frequency omega when the electric field is adiabatically switched on. (c) Finally, there is also a time-dependent current oscillating with frequency 2 omega. We suggest an experiment to test our results.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2000-02-03T09:39:21.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "fermis golden rule",
      "mesoscopic metal ring",
      "static magnetic flux phi",
      "frequency omega",
      "infinitesimal imaginary parts"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}