{
  "id": "2007.04752",
  "version": "v1",
  "published": "2020-07-09T12:52:33.000Z",
  "updated": "2020-07-09T12:52:33.000Z",
  "title": "Flat band superconductivity in type-II Weyl-semimetal WTe2 induced by a normal metal contact",
  "authors": [
    "Artem Kononov",
    "Martin Endres",
    "Gulibusitan Abulizi",
    "Kejian Qu",
    "Jiaqiang Yan",
    "David G. Mandrus",
    "Kenji Watanabe",
    "Takashi Taniguchi",
    "Christian Schönenberger"
  ],
  "comment": "5 pages, 4 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "WTe$_2$ is a material with rich topological properties: it is a 2D topological insulator as a monolayer and a Weyl-semimetal and higher-order topological insulator (HOTI) in the bulk form. Inducing superconductivity in topological materials is a way to obtain topological superconductivity, which lays at the foundation for many proposals of fault tolerant quantum computing. Here, we demonstrate the emergence of superconductivity at the interface between WTe$_2$ and the normal metal palladium. The superconductivity has a critical temperature of about 1.2 K. By studying the superconductivity in perpendicular magnetic field, we obtain the coherence length and the London penetration depth. These parameters hint to a possible origin of superconductivity due to the formation of flat bands. Furthermore, the critical in-plane magnetic field exceeds the Pauli limit, suggesting a non-trivial nature of the superconducting state.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-07-09T12:52:33.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "normal metal contact",
      "flat band superconductivity",
      "type-ii weyl-semimetal wte2",
      "critical in-plane magnetic field exceeds"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}