Dislocation networks in graphite: a scanning tunnelling microscopy study

Abstract
Some of the defects commonly observed by scanning tunnelling microscopy (STM) on graphite can be interpreted as crystal dislocations; we study in this paper the dislocation pattern of different kinds of subboundary (twist boundary and tilt boundary) found on the (0001) cleavage plane of pyrolytic graphite. The origin of the contrast in our STM images is discussed.