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Moiré synaptic transistor with room-temperature neuromorphic functionality

Author

Listed:
  • Xiaodong Yan

    (Northwestern University)

  • Zhiren Zheng

    (Massachusetts Institute of Technology)

  • Vinod K. Sangwan

    (Northwestern University)

  • Justin H. Qian

    (Northwestern University)

  • Xueqiao Wang

    (Massachusetts Institute of Technology)

  • Stephanie E. Liu

    (Northwestern University)

  • Kenji Watanabe

    (National Institute for Materials Science)

  • Takashi Taniguchi

    (National Institute for Materials Science)

  • Su-Yang Xu

    (Harvard University)

  • Pablo Jarillo-Herrero

    (Massachusetts Institute of Technology)

  • Qiong Ma

    (Boston College
    CIFAR)

  • Mark C. Hersam

    (Northwestern University
    Northwestern University
    Northwestern University)

Abstract

Moiré quantum materials host exotic electronic phenomena through enhanced internal Coulomb interactions in twisted two-dimensional heterostructures1–4. When combined with the exceptionally high electrostatic control in atomically thin materials5–8, moiré heterostructures have the potential to enable next-generation electronic devices with unprecedented functionality. However, despite extensive exploration, moiré electronic phenomena have thus far been limited to impractically low cryogenic temperatures9–14, thus precluding real-world applications of moiré quantum materials. Here we report the experimental realization and room-temperature operation of a low-power (20 pW) moiré synaptic transistor based on an asymmetric bilayer graphene/hexagonal boron nitride moiré heterostructure. The asymmetric moiré potential gives rise to robust electronic ratchet states, which enable hysteretic, non-volatile injection of charge carriers that control the conductance of the device. The asymmetric gating in dual-gated moiré heterostructures realizes diverse biorealistic neuromorphic functionalities, such as reconfigurable synaptic responses, spatiotemporal-based tempotrons and Bienenstock–Cooper–Munro input-specific adaptation. In this manner, the moiré synaptic transistor enables efficient compute-in-memory designs and edge hardware accelerators for artificial intelligence and machine learning.

Suggested Citation

  • Xiaodong Yan & Zhiren Zheng & Vinod K. Sangwan & Justin H. Qian & Xueqiao Wang & Stephanie E. Liu & Kenji Watanabe & Takashi Taniguchi & Su-Yang Xu & Pablo Jarillo-Herrero & Qiong Ma & Mark C. Hersam, 2023. "Moiré synaptic transistor with room-temperature neuromorphic functionality," Nature, Nature, vol. 624(7992), pages 551-556, December.
  • Handle: RePEc:nat:nature:v:624:y:2023:i:7992:d:10.1038_s41586-023-06791-1
    DOI: 10.1038/s41586-023-06791-1
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    Cited by:

    1. Yongxiang Li & Shiqing Wang & Ke Yang & Yuchao Yang & Zhong Sun, 2024. "An emergent attractor network in a passive resistive switching circuit," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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