{
  "id": "cond-mat/0311283",
  "version": "v2",
  "published": "2003-11-12T16:22:00.000Z",
  "updated": "2004-01-15T16:42:07.000Z",
  "title": "Quantum-to-classical crossover of mesoscopic conductance fluctuations",
  "authors": [
    "J. Tworzydlo",
    "A. Tajic",
    "C. W. J. Beenakker"
  ],
  "comment": "5 pages, 5 figures: one figure added, references updated",
  "journal": "Phys. Rev. B 69, 165318 (2004)",
  "doi": "10.1103/PhysRevB.69.165318",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We calculate the system-size-over-wave-length ($M$) dependence of sample-to-sample conductance fluctuations, using the open kicked rotator to model chaotic scattering in a ballistic quantum dot coupled by two $N$-mode point contacts to electron reservoirs. Both a fully quantum mechanical and a semiclassical calculation are presented, and found to be in good agreement. The mean squared conductance fluctuations reach the universal quantum limit of random-matrix-theory for small systems. For large systems they increase $\\propto M^2$ at fixed mean dwell time $\\tau_D \\propto M/N$. The universal quantum fluctuations dominate over the nonuniversal classical fluctuations if $N < \\sqrt{M}$. When expressed as a ratio of time scales, the quantum-to-classical crossover is governed by the ratio of Ehrenfest time and ergodic time.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2004-01-15T16:42:07.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "mesoscopic conductance fluctuations",
      "quantum-to-classical crossover",
      "mean squared conductance fluctuations reach",
      "universal quantum fluctuations dominate",
      "ballistic quantum dot"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}