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arXiv · 2105.11125

Eshelby-twisted 3D moire superlattices

Zhigang Song·Xiaotian Sun·Lin-Wang Wang
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Abstract

Twisted bilayers of van der Waals materials have recently attracted great attention due to their tunable strongly correlated phenomena. Here, we investigate the chirality-specific physics in 3D moir\'e superlattices induced by Eshelby twist. Our direct DFT calculations reveal helical rotation leads to optical circular dichroism, and chirality-specific nonlinear Hall effect, even though there is no magnetization or magnetic field. Both these phenomena can be reversed by changing the structural chirality. This provides a way to constructing chirality-specific materials.

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Zhigang Song, Xiaotian Sun, Lin-Wang Wang. 2021-05-24. Eshelby-twisted 3D moire superlattices. https://arxiv.org/abs/2105.11125

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