The strong cross-dimensional coupling between the layer-breathing phonons well extended over tens to hundreds of layer thick WS2/hBN heterostructures and the electrons localized within its few-layer WS2 constituent is observed. The strength of such cross-dimensional electron-phonon coupling can be well reproduced by a microscopic picture through the mediation by the interfacial coupling and the interlayer bond polarizability model in van der Waals heterostructures.

© 2019 The Author(s)

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