{
  "id": "cond-mat/0201161",
  "version": "v1",
  "published": "2002-01-11T05:41:32.000Z",
  "updated": "2002-01-11T05:41:32.000Z",
  "title": "Thermopower of a single electron transistor in the regime of strong inelastic cotunneling",
  "authors": [
    "K. A. Matveev",
    "A. V. Andreev"
  ],
  "comment": "14 pages, 3 figures",
  "doi": "10.1103/PhysRevB.66.045301",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We study Coulomb blockade oscillations of thermoelectric coefficients of a single electron transistor based on a quantum dot strongly coupled to one of the leads by a quantum point contact. At temperatures below the charging energy E_C the transport of electrons is dominated by strong inelastic cotunneling. In this regime we find analytic expressions for the thermopower as a function of temperature T and the reflection amplitude $r$ in the contact. In the case when the electron spins are polarized by a strong external magnetic field, the thermopower shows sinusoidal oscillations as a function of the gate voltage with the amplitude of the order of $e^{-1}|r|\\frac{T}{E_C}$. We obtain qualitatively different results in the absence of the magnetic field. At temperatures between $E_C$ and $E_C|r|^2$ the thermopower oscillations are sinusoidal with the amplitude of order $e^{-1}|r|^2 \\ln \\frac{E_C}{T}$. On the other hand, at $T\\ll E_C|r|^2$ we find non-sinusoidal oscillations of the thermopower with the amplitude $\\sim e^{-1} |r| \\sqrt{T/E_C} \\ln(E_C/T)$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-01-11T05:41:32.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "single electron transistor",
      "strong inelastic cotunneling",
      "thermopower",
      "study coulomb blockade oscillations",
      "strong external magnetic field"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}