Method and Apparatus for Performing Scanning Tunneling Optical Absorption Spectroscopy.
Patent, filed 20 Dec 91, patented 30 Mar 93,
DEPARTMENT OF THE NAVY WASHINGTON DC
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An apparatus for performing scanning tunneling optical absorption spectroscopy includes a scanning tunneling microscope tip positioned at a tunneling distance over a surface portion of a sample to be analyzed, biasing apparatus for producing in electric potential between said scanning tunneling microscope tip and said surface portion sufficient to cause a tunneling current to flow between said scanning tunneling microscope tip and said surface portion, illumination apparatus for illuminating said surface portion with modulated monochromatic light, and a detector for detecting an AC component of the tunneling current resulting from the modulated monochromatic light.
- Atomic and Molecular Physics and Spectroscopy
- Electrical and Electronic Equipment
- Electricity and Magnetism