Mott insulator states in twisted MoSe2 homobilayer

ORAL

Abstract

Moirè superlattices formed by twisted transitional metal dichalcogenide (TMD) layers have been proven an ideal system to study strongly correlated states. Twisted homobilayers exhibit unique properties when the twisted layers are near either R or H stacking as their electronic bands are distinct. Here, we report optical spectroscopy studies of excitons in twisted MoSe2 homobilayers in a device with dual gating. In doping dependent photoluminescence and absorption measurements, we found signatures of Mott insulator states. Such correlated states are high tunable in moirè superlattices.

*We gratefully acknowledge funding from NSF DMR-1720595, NSF ECCS-2130552, and Welch Foundation F-1662.

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Publication: no

Presenters

  • Zhida Liu

    • University of Texas at austin

Authors

  • Zhida Liu

    • University of Texas at austin

  • Xiaohui Liu

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

  • Di Huang

    • University of Texas at Austin

  • Yue Ni

    • University of Texas at Austin

  • Jiamin Quan

    • University of Texas at Austin

  • Chih-Kang Shih

    • University of Texas at Austin

  • Yongxin Zeng

    • University of Texas at Austin

  • Allan H MacDonald

    • 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

  • Xiaoqin Elaine Li

    • University of Texas at Austin