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Anisotropic moiré optical transitions in twisted monolayer/bilayer phosphorene heterostructures

Author

Listed:
  • Shilong Zhao

    (Tsinghua-Berkeley Shenzhen Institute, Tsinghua University
    University of California at Berkeley)

  • Erqing Wang

    (Tsinghua-Berkeley Shenzhen Institute, Tsinghua University)

  • Ebru Alime Üzer

    (Technical University of Munich)

  • Shuaifei Guo

    (Fudan University)

  • Ruishi Qi

    (University of California at Berkeley
    Electron Microscopy Laboratory and International Center for Quantum Materials, School of Physics, Peking University)

  • Junyang Tan

    (Tsinghua-Berkeley Shenzhen Institute, Tsinghua University)

  • Kenji Watanabe

    (National Institute for Materials Science)

  • Takashi Taniguchi

    (National Institute for Materials Science)

  • Tom Nilges

    (Technical University of Munich)

  • Peng Gao

    (Electron Microscopy Laboratory and International Center for Quantum Materials, School of Physics, Peking University
    Collaborative Innovation Center of Quantum Matter)

  • Yuanbo Zhang

    (Fudan University)

  • Hui-Ming Cheng

    (Tsinghua-Berkeley Shenzhen Institute, Tsinghua University)

  • Bilu Liu

    (Tsinghua-Berkeley Shenzhen Institute, Tsinghua University)

  • Xiaolong Zou

    (Tsinghua-Berkeley Shenzhen Institute, Tsinghua University)

  • Feng Wang

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

Abstract

Moiré superlattices of van der Waals heterostructures provide a powerful way to engineer electronic structures of two-dimensional materials. Many novel quantum phenomena have emerged in graphene and transition metal dichalcogenide moiré systems. Twisted phosphorene offers another attractive system to explore moiré physics because phosphorene features an anisotropic rectangular lattice, different from isotropic hexagonal lattices previously reported. Here we report emerging anisotropic moiré optical transitions in twisted monolayer/bilayer phosphorenes. The optical resonances in phosphorene moiré superlattice depend sensitively on twist angle and are completely different from those in the constitute monolayer and bilayer phosphorene even for a twist angle as large as 19°. Our calculations reveal that the Γ-point direct bandgap and the rectangular lattice of phosphorene give rise to the remarkably strong moiré physics in large-twist-angle phosphorene heterostructures. This work highlights fresh opportunities to explore moiré physics in phosphorene and other van der Waals heterostructures with different lattice configurations.

Suggested Citation

  • Shilong Zhao & Erqing Wang & Ebru Alime Üzer & Shuaifei Guo & Ruishi Qi & Junyang Tan & Kenji Watanabe & Takashi Taniguchi & Tom Nilges & Peng Gao & Yuanbo Zhang & Hui-Ming Cheng & Bilu Liu & Xiaolong, 2021. "Anisotropic moiré optical transitions in twisted monolayer/bilayer phosphorene heterostructures," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24272-9
    DOI: 10.1038/s41467-021-24272-9
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