{
  "id": "cond-mat/9802231",
  "version": "v2",
  "published": "1998-02-21T17:13:39.000Z",
  "updated": "1998-03-04T15:30:46.000Z",
  "title": "Heating of a two-dimensional electron gas by the electric field of a surface acoustic wave",
  "authors": [
    "I. L. Drichko",
    "A. M. D'yakonov",
    "V. D. Kagan",
    "A. M. Kreshchuk",
    "T. A. Polyanskaya",
    "I. G. Savel'ev",
    "I. Yu. Smirnov",
    "A. V. Suslov"
  ],
  "comment": "some technical corrections for pictures were made",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The heating of a two-dimensional electron gas by an rf electric field generated by a surface acoustic wave, which can be described by an electron temperature $T_e$, has been investigated. It is shown that the energy balance of the electron gas is determined by electron scattering by the piezoelectric potential of the acoustic phonons with $T_e$ determined from measurements at frequencies $f$= 30 and 150 MHz. The experimental curves of the energy loss $Q$ versus $T_e$ at different SAW frequencies depend on the value of $\\omega \\bar{\\tau}_{\\epsilon}$, compared to 1, where $ \\bar {\\tau}_{\\epsilon}$ is the relaxation time of the average electron energy. Theoretical calculations of the heating of a two-dimensional electron gas by the electric field of the surface acoustic wave are presented for the case of thermal electrons ($\\Delta T \\ll T$). The calculations show that for the same energy losses $Q$ the degree of heating of the two-dimensional electrons (i.e., the ratio $T_e/T$) for $\\omega \\bar{\\tau}_{\\epsilon}>1$ ($f$= 150 MHz) is less than for $\\omega \\bar{\\tau}_{\\epsilon}<1$ ($f$=30 MHz). Experimental results confirming this calculation are presented.",
  "revisions": [
    {
      "version": "v2",
      "updated": "1998-03-04T15:30:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "two-dimensional electron gas",
      "surface acoustic wave",
      "saw frequencies depend",
      "rf electric field",
      "calculation"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "1998cond.mat..2231D"
    }
  }
}