{
  "id": "1707.00172",
  "version": "v1",
  "published": "2017-07-01T16:13:08.000Z",
  "updated": "2017-07-01T16:13:08.000Z",
  "title": "Slow Dynamics of the Electron-Glasses; the Role of Disorder",
  "authors": [
    "Z. Ovadyahu"
  ],
  "comment": "10 figures",
  "journal": "Physical Review B 95, 134203 (2017)",
  "doi": "10.1103/PhysRevB.95.134203",
  "categories": [
    "cond-mat.dis-nn"
  ],
  "abstract": "We examine in this work the role of disorder in contributing to the sluggish relaxation observed in intrinsic electron-glasses. Our approach is guided by several empirical observations: First and foremost, Anderson localization is a pre-requisite for observing these nonequilibrium phenomena. Secondly, sluggish relaxation appears to favor Anderson-insulators with relatively large Fermi-energies (hence proportionally large disorder). These observations motivated us to consider a way to measure the underlying disorder in a realistic Anderson insulator. Optical study using a series of amorphous indium-oxide (In_{x}O) establish a simple connection between carrier-concentration and the disorder necessary to approach the metal-insulator transition from the insulating side. This is used to estimate the typical magnitude of the quenched potential-fluctuation in the electron-glass phase of this system. The implications of our findings on the slow dynamics of Anderson-insulators are discussed. In particular, the reason for the absence of a memory-dip and the accompanying electron-glass effects in lightly-doped semiconductors emerges as a natural consequence of their weak disorder.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-07-01T16:13:08.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "slow dynamics",
      "realistic anderson insulator",
      "intrinsic electron-glasses",
      "lightly-doped semiconductors emerges",
      "observations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}