Fabrication and Measurement of Electron Interferometers in vdW Hetrostructures

ORAL

Abstract

Fabry-Perot interferometry has been proposed as an experimental tool to detect the effective charge of quasiparticles and the anyonic statistics in the FQH regime. The electronic interferometers are defined by two quantum point contacts (QPCs) which induce controllable backscattering and partitioning, by bringing the forward propagating edge channel in proximity with the backward propagating edge channel. Recently, clean Van der Waals heterostructures has emerged as a new platform for interferometry experiments due to their gate tunability and control over confinement potentials. In this talk I will discuss different approaches to fabricate electron interferometers by utilizing vdW technique and AFM based nanolithography. I will also present transport measurements of these confined geometries in QH regime where coherent phenomena can be observed.

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Presenters

  • Robert W Rienstra

    • George Mason University

Authors

  • Robert W Rienstra

    • George Mason University

  • Nishat Sultana

    • George Mason University

  • Akhil Chauhan

    • George Mason University

  • 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

  • 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

  • Nikolai Zhitenev

    • National Institute of Standards and Technology

  • Joseph A Stroscio

    • National Institute of Standards and Technology
    • National Institute of Standards and Tech

  • Fereshte Ghahari

    • George Mason University