Fabricating quantum point contact in monolayer WTe2

ORAL

Abstract

Quantum point contact (QPC), which explores one-dimensional electronic transport channel, has attracted a lot of interests for engineering quantum devices and exploring low-dimensional quantum physics. Exploring the effects of QPC in systems that combine superconductivity and topology is promising to reveal new phenomena in previously unexplored regime. In this talk, I will present our effort in creating QPC device in a topologically non-trivial 2D crystal, the monolayer tungsten ditelluride (WTe2), which has been established as a quantum spin hall insulator and a gate-induced superconductor in a single material. I will describe our fabrication process of a QPC device in WTe2 monolayer and the experimental data that paves the way for the further exploration.

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Presenters

  • Yue Tang

    • Princeton University

Authors

  • Yue Tang

    • Princeton University

  • Yanyu Jia

    • Princeton University

  • Tiancheng Song

    • Princeton University

  • Pengjie Wang

    • Princeton University

  • Guo Yu

    • Princeton University

  • Ratnadwip Singha

    • Princeton University

  • Xin Gui

    • Princeton University

  • Kenji Watanabe

    • National Institute for Materials Science
    • Research Center for Functional Materials, National Institute of Materials Science
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan

  • Takashi Taniguchi

    • National Institute for Materials Science
    • Kyoto Univ
    • International Center for Materials Nanoarchitectonics, National Institute of Materials Science
    • Kyoto University
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • National Institute For Materials Science
    • NIMS
    • National Institute for Material Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan

  • Robert Cava

    • Princeton University

  • Leslie M Schoop

    • Princeton University

  • Sanfeng Wu

    • Princeton University