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Evolution of interlayer coupling in twisted molybdenum disulfide bilayers

Author

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  • Kaihui Liu

    (University of California at Berkeley
    State Key Laboratory for Mesoscopic Physics, School of Physics and Collaborative Innovation Center of Quantum Matter, Peking University)

  • Liming Zhang

    (University of California at Berkeley)

  • Ting Cao

    (University of California at Berkeley
    Lawrence Berkeley National Laboratory)

  • Chenhao Jin

    (University of California at Berkeley)

  • Diana Qiu

    (University of California at Berkeley
    Lawrence Berkeley National Laboratory)

  • Qin Zhou

    (Lawrence Berkeley National Laboratory)

  • Alex Zettl

    (University of California at Berkeley
    Lawrence Berkeley National Laboratory
    Kavli Energy NanoSciences Institute at the University of California, Berkeley and the Lawrence Berkeley National Laboratory)

  • Peidong Yang

    (University of California at Berkeley
    Kavli Energy NanoSciences Institute at the University of California, Berkeley and the Lawrence Berkeley National Laboratory
    University of California at Berkeley)

  • Steve G. Louie

    (University of California at Berkeley
    Lawrence Berkeley National Laboratory)

  • Feng Wang

    (University of California at Berkeley
    Lawrence Berkeley National Laboratory
    Kavli Energy NanoSciences Institute at the University of California, Berkeley and the Lawrence Berkeley National Laboratory)

Abstract

Van der Waals coupling is emerging as a powerful method to engineer physical properties of atomically thin two-dimensional materials. In coupled graphene–graphene and graphene–boron nitride layers, interesting physical phenomena ranging from Fermi velocity renormalization to Hofstadter’s butterfly pattern have been demonstrated. Atomically thin transition metal dichalcogenides, another family of two-dimensional-layered semiconductors, can show distinct coupling phenomena. Here we demonstrate the evolution of interlayer coupling with twist angles in as-grown molybdenum disulfide bilayers. We find that the indirect bandgap size varies appreciably with the stacking configuration: it shows the largest redshift for AA- and AB-stacked bilayers, and a significantly smaller but constant redshift for all other twist angles. Our observations, together with ab initio calculations, reveal that this evolution of interlayer coupling originates from the repulsive steric effects that leads to different interlayer separations between the two molybdenum disulfide layers in different stacking configurations.

Suggested Citation

  • Kaihui Liu & Liming Zhang & Ting Cao & Chenhao Jin & Diana Qiu & Qin Zhou & Alex Zettl & Peidong Yang & Steve G. Louie & Feng Wang, 2014. "Evolution of interlayer coupling in twisted molybdenum disulfide bilayers," Nature Communications, Nature, vol. 5(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5966
    DOI: 10.1038/ncomms5966
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    Cited by:

    1. Yufei Sun & Yujia Wang & Enze Wang & Bolun Wang & Hengyi Zhao & Yongpan Zeng & Qinghua Zhang & Yonghuang Wu & Lin Gu & Xiaoyan Li & Kai Liu, 2022. "Determining the interlayer shearing in twisted bilayer MoS2 by nanoindentation," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Yiran Ding & Mengqi Zeng & Qijing Zheng & Jiaqian Zhang & Ding Xu & Weiyin Chen & Chenyang Wang & Shulin Chen & Yingying Xie & Yu Ding & Shuting Zheng & Jin Zhao & Peng Gao & Lei Fu, 2021. "Bidirectional and reversible tuning of the interlayer spacing of two-dimensional materials," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    3. Yecun Wu & Jingyang Wang & Yanbin Li & Jiawei Zhou & Bai Yang Wang & Ankun Yang & Lin-Wang Wang & Harold Y. Hwang & Yi Cui, 2022. "Observation of an intermediate state during lithium intercalation of twisted bilayer MoS2," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    4. Shun Feng & Aidan J. Campbell & Mauro Brotons-Gisbert & Daniel Andres-Penares & Hyeonjun Baek & Takashi Taniguchi & Kenji Watanabe & Bernhard Urbaszek & Iann C. Gerber & Brian D. Gerardot, 2024. "Highly tunable ground and excited state excitonic dipoles in multilayer 2H-MoSe2," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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