Interlayer Interactions in 1D Van der Waals Moire Superlattices

Studying two-dimensional (2D) van der Waals (vdW) moire superlattices and their interlayer interactions have received surging attention after recent discoveries of many new phases of matter that are highly tunable. Different atomistic registry between layers forming the inner and outer nanotubes can also form one-dimensional (1D) vdW moire superlattices. In this review, experimental observations and theoretical perspectives related to interlayer interactions in 1D vdW moire superlattices are summarized. The discussion focuses on double-walled carbon nanotubes (DWNTs), a model 1D vdW moire system, and the authors highlight the new optical features emerging from the non-trivial strong interlayer coupling effect and the unique physics in 1D DWNTs. Future directions and questions in probing the intriguing physical phenomena in 1D vdW moire superlattices such as, correlated physics in different 1D moire systems beyond DWNTs are proposed and discussed.

Automated summary

This review summarizes experimental observations and theoretical perspectives related to interlayer interactions in 1D vdW moire superlattices, focusing on the unique optical features and physics in 1D DWNTs arising from the non-trivial strong interlayer coupling effect. Proposed and discussed are future directions and questions in probing the intriguing physical phenomena in 1D vdW moire superlattices, including correlated physics in different 1D moire systems beyond DWNTs.