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Tunable Moiré Superlattice of Artificially Twisted Monolayers

ORAL

Abstract

Twisting between two stacked monolayers modulates periodic potentials and forms the Moiré electronic superlattices, which offers an additional degree of freedom to alter material property. Considerable unique observations, including unconventional superconductivity and quantized interlayer excitons are correlated to the electronic superlattices but further study requires reliable routes to study the Moiré in real space. Scanning tunneling microscopy (STM) is ideal to precisely probe the Moiré superlattice and correlate coupled parameters among local electronic structures, strains, defects, and band alignment at atomic scale. Here, a clean route is developed to construct twisted lattices using synthesized monolayers for fundamental studies. Diverse electronic superlattices are experimentally confirmed with STM at room temperature.

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Presenters

  • Yi-Cheng Chiang

    Materials Science and Engineering, National Tsing Hua University, National Tsing-Hua University, Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, National Taiwan Normal Univ

Authors

  • Yi-Cheng Chiang

    Materials Science and Engineering, National Tsing Hua University, National Tsing-Hua University, Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, National Taiwan Normal Univ

  • Po Yen Chen

    Materials Science and Engineering, National Tsing Hua University

  • Xin-Quan Zhang

    Materials Science and Engineering, National Tsing Hua University

  • Ying-Yu Lai

    Materials Science and Engineering, National Tsing Hua University, National Taiwan Normal Univ

  • Chun-An Chen

    Materials Science and Engineering, National Tsing Hua University, National Tsing-Hua University, Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan

  • Erh-chen Lin

    Materials Science and Engineering, National Tsing Hua University

  • Syu You Guan

    Physics, Academia Sinica

  • Shangjr Gwo

    Physics, National Tsing Hua University

  • Chia-Seng Chang

    Physics, Academia Sinica

  • Lih Juann Chen

    Materials Science and Engineering, National Tsing Hua University

  • Yi-Hsien Lee

    Materials Science and Engineering, National Tsing Hua University, National Tsing-Hua University, Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, National Taiwan Normal Univ