Emerging chirality and moir\'e dynamics in twisted layered material heterostructures
Abstract
Moir\'e superstructures arising at twisted 2D interfaces have recently attracted the attention of the scientific community due to exotic quantum states and unique mechanical and tribological behaviors that they exhibit. Here, we predict the emergence of chiral distortions in twisted layered interfaces of finite dimensions. This phenomenon originates in intricate interplay between interfacial interactions and contact boundary constraints. A metric termed the fractional chiral area, is introduced to quantify the overall chirality of the moir\'e superstructure and to characterize its spatial distribution. Despite the equilibrium nature of the discovered energetic and structural chirality effects they are shown to be manifested in the twisting dynamics of layered interfaces, which demonstrates a continuous transition from stick-slip to smooth rotation with no external trigger.
Cite
@article{arxiv.2410.12067,
title = {Emerging chirality and moir\'e dynamics in twisted layered material heterostructures},
author = {Andrea Silva and Xiang Gao and Melisa M. Gianetti and Roberto Guerra and Nicola Manini and Andrea Vanossi and Michael Urbakh and Oded Hod},
journal= {arXiv preprint arXiv:2410.12067},
year = {2025}
}
Comments
Accepted in ACS Nano