Eshelby-twisted three-dimensional moiré superlattices
Zhigang Song, Xiaotian Sun, Lin‐Wang Wang
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 three-dimensional moir\'e 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.
Topics & Concepts
Chirality (physics)SuperlatticeCondensed matter physicsTwistMoiré patternPhysicsRotation (mathematics)van der Waals forceMagnetizationMagnetic fieldMaterials scienceOpticsQuantum mechanicsSymmetry breakingGeometryMoleculeMathematicsChiral symmetry breakingNambu–Jona-Lasinio modelQuantum and electron transport phenomenaTopological Materials and PhenomenaMagnetic properties of thin films