{
  "id": "2211.14597",
  "version": "v1",
  "published": "2022-11-26T15:48:42.000Z",
  "updated": "2022-11-26T15:48:42.000Z",
  "title": "Temperature dependence of the energy band gap in ZrTe$_5$: implications for the topological phase",
  "authors": [
    "I. Mohelsky",
    "J. Wyzula",
    "B. A. Piot",
    "G. D. Gu",
    "Q. Li",
    "A. Akrap",
    "M. Orlita"
  ],
  "comment": "6 pages, 2 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci"
  ],
  "abstract": "Using Landau level spectroscopy, we determine the temperature dependence of the energy band gap in zirconium pentatelluride (ZrTe$_5$). We find that the band gap reaches $E_g=(5 \\pm 1)$ meV at low temperatures and increases monotonously when the temperature is raised. This implies that ZrTe$_5$ is a weak topological insulator, with non-inverted ordering of electronic bands in the center of the Brillouin zone. Our magneto-transport experiments performed in parallel show that the resistivity anomaly in ZrTe$_5$ is not connected with the temperature dependence of the band gap.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-11-26T15:48:42.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "energy band gap",
      "temperature dependence",
      "topological phase",
      "implications",
      "landau level spectroscopy"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}