A novel method achieving ultra-high geometrical resolution in scanning tunnelling microscopy

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

10

Scientific paper

We report a new contrast mechanism in which scanning tunnelling micrographs of a certain class of molecules resemble chemists' structure formulae. The method is based on adding molecular hydrogen below its condensation temperature to the tunnelling junction of a low-temperature scanning tunnelling microscope. In the presence of hydrogen, the scanning tunnelling microscope contrast can be switched between the conventional mapping of the electronic local density of states and the new geometric imaging by selecting the appropriate bias voltage. Scanning tunnelling spectroscopy suggests that the coupling of the electron tunnelling current to an internal degree of freedom in the tunnelling junction is responsible for the geometric contrast. The new scanning tunnelling hydrogen microscopy (STHM) allows the chemical identification of certain molecular species by their structure.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

A novel method achieving ultra-high geometrical resolution in scanning tunnelling microscopy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A novel method achieving ultra-high geometrical resolution in scanning tunnelling microscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A novel method achieving ultra-high geometrical resolution in scanning tunnelling microscopy will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1075501

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.