Manipulation of Moiré Superlattice in Twisted Monolayer-multilayer Graphene by Moving Nanobubbles
P. F. Ding, Jiahao Yan, Jiakai Wang, Xu Han, Wenchen Yang, Hui Chen, Decheng Zhang, Mengting Huang, Jinghan Zhao, Shiqi Yang, Tongtong Xue, Liwei Liu, Yunyun Dai, Yuan Hou, Shuai Zhang, Xiaolong Xu, Yeliang Wang, Yuan Huang
Abstract
In the heterostructure of two-dimensional (2D) materials, many novel physics phenomena are strongly dependent on the Moiré superlattice. How to achieve the continuous manipulation of the Moiré superlattice in the same sample is very important to study the evolution of various physical properties. Here, in minimally twisted monolayer-multilayer graphene, we found that bubble-induced strain has a huge impact on the Moiré superlattice. By employing the AFM tip to dynamically and continuously move the nanobubble, we realized the modulation of the Moiré superlattice, like the evolution of regular triangular domains into long strip domain structures with single or double domain walls. We also achieved controllable modulation of the Moiré superlattice by moving multiple nanobubbles and establishing the coupling of nanobubbles. Our work presents a flexible method for continuous and controllable manipulation of Moiré superlattices, which will be widely used to study novel physical properties in 2D heterostructures.