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DOE OSTI · 1821671

Eshelby-twisted three-dimensional moiré superlattices

Song, Zhigang·Sun, Xiaotian·Wang, Lin-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. In this work, we investigate the chirality-specific physics in three-dimensional moiré superlattices induced by Eshelby twist. Our direct density functional theory 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 path to constructing chirality-specific materials.

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2-dimensional systems75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYAnomalous Hall effectHall effectVan der Waals systemsdensity functional calculationsoptical & microwave phenomenastructural properties

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Song, Zhigang, Sun, Xiaotian, Wang, Lin-Wang. 2021-06-30. Eshelby-twisted three-dimensional moiré superlattices. https://doi.org/10.1103/physrevb.103.245206

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