Field-assisted local oxidation on a hydrogen-terminated (001) diamond surface was performed using an atomic force microscope (AFM). Anodic oxidation by a surface water meniscus layer is suggested to account for this oxidation process. Through the oxygenated area, Fowler-Nordheim (F-N) tunneling current was observed. The difference in electron affinity between the hydrogen-terminated surface and the oxygenated area was confirmed by scanning electron microscopic (SEM) observations.
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Tachiki et al. (2000) studied this question.
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