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Layer-dependent correlated phases in WSe/MoS moiré superlattice

Nature Materials, ISSN: 1476-4660, Vol: 22, Issue: 5, Page: 605-611
2023
  • 25
    Citations
  • 0
    Usage
  • 76
    Captures
  • 0
    Mentions
  • 12
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    25
  • Captures
    76
  • Social Media
    12
    • Shares, Likes & Comments
      12
      • Facebook
        12

Article Description

Electron correlation plays an essential role in the macroscopic quantum phenomena in the moiré heterostructure, such as antiferromagnetism and correlated insulating phases. Unlike the phenomena where the interaction involves only electrons in one layer, the interaction of distinct phases in two or more layers represents a new horizon forward, such as the one in the Kondo lattice model. Here, using interlayer excitons as a probe, we show that the interlayer interactions in heterobilayers of tungsten diselenide and molybdenum disulfide (WSe/MoS) can be electrically switched on and off, resulting in a layer-dependent correlated phase diagram, including single-layer, layer-selective, excitonic-insulator and layer-hybridized regions. We demonstrate that these correlated phases affect the interlayer exciton non-radiative decay pathways. These results reveal the role of strong correlation on interlayer exciton dynamics and pave the way for studying the layer-resolved strong correlation behaviour in moiré heterostructures.

Bibliographic Details

Tan, Qinghai; Rasmita, Abdullah; Zhang, Zhaowei; Cai, Hongbing; Cai, Xiangbin; Dai, Xuran; Watanabe, Kenji; Taniguchi, Takashi; MacDonald, Allan H; Gao, Weibo

Springer Science and Business Media LLC

Chemistry; Materials Science; Physics and Astronomy; Engineering

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