Scanning Tunneling Microscopy and Spectroscopy of Silicon and Carbon Surfaces

Shenda Mary Baker
Scanning Tunneling Microscopy (STM) investigations and additional surface analyses were performed on carbon and silicon surfaces. A number of anomalies have been observed on highly oriented pyrolytic graphite (HOPG), including large corrugations, distorted images, large range of tip motion and the absence of defects. A mechanism involving direct contact between tip and sample or contact through a contamination layer to provide an additional conduction pathway is proposed. This model of point-contact imaging provides an explanation...
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