Barrier-height imaging with scanning tunnelimg microscopy (STM) is applied to the study of oxygen adsorption on a Si(111) 7×7 surface. On clean surfaces, atomic resolution is obtained in the barrier-height mode, as expected for corrugated surfaces. Upon exposure to oxygen, the barrier height φ is found to increase at the oxygen-reacted sites. The dark sites show a greater increase in φ than the bright sites, indicating more charge transfer at the dark sites.
No takes yet. Share an insight, caveat, or question.
Kurokawa et al. (1997) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: