Scanning tunneling microscope with micrometer approach and thermal compensation

Abstract
A scanning tunneling microscope that uses a micrometer coarse approach mechanism is described. The approach mechanism can be decoupled from the rest of the microscope to result in a thermally compensated instrument. Thirty minutes after establishing tunneling, lateral thermal drift in our instrument is down to 0.5 Å/min. Construction details of the microscope and high resolution images of pyrolytic graphite and 2H-NbSe2 samples are presented.

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