2022
DOI: 10.48550/arxiv.2205.03497
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Signature of lattice dynamics in twisted 2D homo/hetero-bilayers

Yang Pan,
Shutong Li,
Mahfujur Rahaman
et al.

Abstract: Twisted 2D bilayer materials are created by artificial stacking of two monolayer crystal networks of 2D materials with a desired twisting angle θ. The material forms a moiré superlattice due to the periodicity of both top and bottom layer crystal structure. The optical properties are modified by lattice reconstruction and phonon renormalization, which makes optical spectroscopy an ideal characterization tool to study novel physics phenomena. Here, we report a Raman investigation on a full period of the twisted… Show more

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