Hydrogenated diamond crystal C(100) conductivity studied by STM

The topographic and spectroscopic capabilities of the scanning tunnelling microscope (STM) have been used to explore the conductivity of hydrogenated diamond C(100)-(2 × 1) surfaces. It has been shown that the surface conductivity is determined by the interplay between various factors: the adsorption of atmospheric species on the surface, the doping concentration of the sample, the presence of sub-surface species and the presence of the top layer of hydrogen.