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Oscillating edge states in one-dimensional MoS2 nanowires

Author

Listed:
  • Hai Xu

    (National University of Singapore
    Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore)

  • Shuanglong Liu

    (National University of Singapore)

  • Zijing Ding

    (National University of Singapore
    SZU-NUS Collaborative Innovation Center for Optoelectronic Science and Technology, College of Optoelectronic Engineering, Shenzhen University)

  • Sherman J. R. Tan

    (National University of Singapore
    NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore , Centre for Life Sciences)

  • Kah Meng Yam

    (National University of Singapore
    Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore)

  • Yang Bao

    (National University of Singapore)

  • Chang Tai Nai

    (National University of Singapore)

  • Man-Fai Ng

    (Institute of High Performance Computing, Agency for Science, Technology and Research)

  • Jiong Lu

    (National University of Singapore
    Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore)

  • Chun Zhang

    (National University of Singapore
    National University of Singapore)

  • Kian Ping Loh

    (National University of Singapore
    Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore)

Abstract

Reducing the dimensionality of transition metal dichalcogenides to one dimension opens it to structural and electronic modulation related to charge density wave and quantum correlation effects arising from edge states. The greater flexibility of a molecular scale nanowire allows a strain-imposing substrate to exert structural and electronic modulation on it, leading to an interplay between the curvature-induced influences and intrinsic ground-state topology. Herein, the templated growth of MoS2 nanowire arrays consisting of the smallest stoichiometric MoS2 building blocks is investigated using scanning tunnelling microscopy and non-contact atomic force microscopy. Our results show that lattice strain imposed on a nanowire causes the energy of the edge states to oscillate periodically along its length in phase with the period of the substrate topographical modulation. This periodic oscillation vanishes when individual MoS2 nanowires join to form a wider nanoribbon, revealing that the strain-induced modulation depends on in-plane rigidity, which increases with system size.

Suggested Citation

  • Hai Xu & Shuanglong Liu & Zijing Ding & Sherman J. R. Tan & Kah Meng Yam & Yang Bao & Chang Tai Nai & Man-Fai Ng & Jiong Lu & Chun Zhang & Kian Ping Loh, 2016. "Oscillating edge states in one-dimensional MoS2 nanowires," Nature Communications, Nature, vol. 7(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12904
    DOI: 10.1038/ncomms12904
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    Cited by:

    1. Pengfei Yang & Dashuai Wang & Xiaoxu Zhao & Wenzhi Quan & Qi Jiang & Xuan Li & Bin Tang & Jingyi Hu & Lijie Zhu & Shuangyuan Pan & Yuping Shi & Yahuan Huan & Fangfang Cui & Shan Qiao & Qing Chen & Zhe, 2022. "Epitaxial growth of inch-scale single-crystal transition metal dichalcogenides through the patching of unidirectionally orientated ribbons," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Wenjun Cui & Weixiao Lin & Weichao Lu & Chengshan Liu & Zhixiao Gao & Hao Ma & Wen Zhao & Gustaaf Tendeloo & Wenyu Zhao & Qingjie Zhang & Xiahan Sang, 2023. "Direct observation of cation diffusion driven surface reconstruction at van der Waals gaps," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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