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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