Second-order correlation measurements of electrically generated interlayer excitons in atomically thin semiconductor heterostructures

ORAL

Abstract

Two-dimensional type-II heterostructures, such as MoSe2/WSe2, provide an atomically thin platform for studying the interactions of strongly interacting excitons and free charges. By applying a forward bias, we electrically inject electrons and holes that recombine as interlayer excitons (IEs) and emit electroluminescence. We can further tune the relative electron-hole imbalance with electrostatic gates to study the formation of IEs interacting with an underlying Fermi sea. We combine electroluminescence experiments, photoluminescence spectroscopy, and second-order correlation measurements to study the nature of these strongly driven non-equilibrium states.

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Presenters

  • Andres M Mier Valdivia

    • Harvard University

Authors

  • Andres M Mier Valdivia

    • Harvard University

  • Nadine Leisgang

    • Harvard University

  • Andrew Joe

    • University of California Berkeley
    • University of California Riverside

  • Pavel Dolgirev

    • Harvard University

  • Dapeng Ding

    • Harvard University

  • Jue Wang

    • Harvard University

  • Daniel Rhodes

    • University of Wisconsin - Madison

  • Bumho Kim

    • University of Pennsylvania

  • Song Liu

    • Kansas State University
    • Columbia University

  • Kenji Watanabe

    • National Institute for Materials Science
    • NIMS
    • Research Center for Electronic and Optical Materials, National Institute for Materials Science
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science

  • Takashi Taniguchi

    • Kyoto Univ
    • National Institute for Materials Science
    • Research Center for Materials Nanoarchitectonics
    • Research Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Sciences
    • NIMS
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science
    • International Center for Materials Nanoarchitectonics, NIMS, Japan
    • International Center for Materials Nanoarchitectonics, Tsukuba
    • National Institue for Materials Science
    • Kyoto University
    • National Institute of Materials Science
    • International Center for Materials Nanoarchitectonics and National Institute for Materials Science

  • James C Hone

    • Columbia University

  • Mikhail D Lukin

    • Harvard University

  • Hongkun Park

    • Harvard University

  • Philip Kim

    • Harvard University