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Cross-dimensional electron-phonon coupling in van der Waals heterostructures

Author

Listed:
  • Miao-Ling Lin

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yu Zhou

    (Nanjing Tech University)

  • Jiang-Bin Wu

    (Chinese Academy of Sciences)

  • Xin Cong

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xue-Lu Liu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Jun Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Beijing Academy of Quantum Information Science)

  • Hai Li

    (Nanjing Tech University)

  • Wang Yao

    (University of Hong Kong)

  • Ping-Heng Tan

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Beijing Academy of Quantum Information Science)

Abstract

The electron-phonon coupling (EPC) in a material is at the frontier of the fundamental research, underlying many quantum behaviors. van der Waals heterostructures (vdWHs) provide an ideal platform to reveal the intrinsic interaction between their electrons and phonons. In particular, the flexible van der Waals stacking of different atomic crystals leads to multiple opportunities to engineer the interlayer phonon modes for EPC. Here, in hBN/WS2 vdWH, we report the strong cross-dimensional coupling between the layer-breathing phonons well extended over tens to hundreds of layer thick vdWH and the electrons localized within the few-layer WS2 constituent. The strength of such cross-dimensional EPC can be well reproduced by a microscopic picture through the mediation by the interfacial coupling and also the interlayer bond polarizability model in vdWHs. The study on cross-dimensional EPC paves the way to manipulate the interaction between electrons and phonons in various vdWHs by interfacial engineering for possible interesting physical phenomena.

Suggested Citation

  • Miao-Ling Lin & Yu Zhou & Jiang-Bin Wu & Xin Cong & Xue-Lu Liu & Jun Zhang & Hai Li & Wang Yao & Ping-Heng Tan, 2019. "Cross-dimensional electron-phonon coupling in van der Waals heterostructures," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10400-z
    DOI: 10.1038/s41467-019-10400-z
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