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