Figure 7From: Adatom Fe(III) on the hematite surface: Observation of a key reactive surface species(Color) Dual-bias STM images of the hematite (001) surface, taken in air. All images have a z range of 0.30 nm, and all are 14 × 14 nm. (A) -700 and +600 mV, 424 pA; (B) -800 and +500 mV, 424 pA; (C) -600 and +400 mV, 700 pA. Circles and lines have been overlaid on all images to aid comparison of features in the negative-bias and positive-bias images.Back to article page