Electric field tunable hybridization in MoSe2 bilayers

POSTER

Abstract



Transition metal chalcogenide (TMD) monolayers and twisted bilayers have been extensively investigated with most studies focusing on unique exciton resonances and correlated insulator states. Many effects observed in twisted bilayers are also present in natural bilayers, which is a much simpler system less susceptible to inhomogeneity introduced by a variety of factors. Here, we study a dual-gated MoSe2 natural bilayer using optical reflectivity measurement and discover the distinct properties of polarons (bound electron-hole pairs).The attractive polaron signal shows strong layer hybridization, which is tunable by electric field.

*We gratefully acknowledge funding from NSF DMR-1720595, NSF ECCS-2130552, and WelchFoundation F-1662. The work was partly done at the Texas Nanofabrication Facility supported by NSF grant NNCI-2025227.

Presenters

  • Xiaohui Liu

    • University of Texas at Austin
    • University of texas at asutin

Authors

  • Xiaohui Liu

    • University of Texas at Austin
    • University of texas at asutin

  • Zhida Liu

    • University of Texas at austin

  • Yue Ni

    • University of Texas at Austin

  • Di Huang

    • University of Texas at Austin
    • Tongji University

  • Jiamin Quan

    • University of Texas at Austin

  • Hyunsue Kim

    • University of Texas at Austin

  • Yanxing Li

    • The University of Texas at Austin

  • danfu liang

    • University of Texas at Austin

  • Frank Y Gao

    • University of Texas at Austin

  • Yongxin Zeng

    • University of Texas at Austin

  • Nemin Wei

    • University of Texas at Austin

  • 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

  • Chih-Kang Shih

    • University of Texas at Austin

  • Allan H MacDonald

    • University of Texas at Austin

  • Xiaoqin Elaine Li

    • University of Texas at Austin