Domain Walls stretching in Graphite Moiré by Scanning Tunneling Microscope based deformation

Pressure-induced devices have recently become an interesting tunable parameter for exploring unconventional material properties. In this work, we merge the idea of a long-forgotten deformation technique using Scanning Tunneling Microscopy tip to deform with angstrom resolution the two-dimensional layered surfaces. This helps to image and probe in-situ the gradual nano-scale change in surface structures and consequent properties that cannot be observed in conventional methods of pressure-induced devices. One of the strange behaviors observed was the lateral surface expansion of one-dimensional domain walls of graphitic moire patterns. This showed that the term "domain wall" (between Bernal and rhombohedral graphite domains) is neither a domain nor a wall and thus a misnomer.