Ballistic Electron Microscopy of Individual Molecules
Amin Bannani,
Christian Bobisch,
Rolf Möller*
We analyzed the transport of ballistic electrons through organic
molecules on uniformly flat surfaces of bismuth grown on silicon.
For the fullerene C
60 and for a planar organic molecule (3,4,9,10-perylene-tetracarboxylic
acid dianhydride), the signals revealed characteristic submolecular
patterns that indicated where ballistic transport was enhanced
or attenuated. The transport was associated to specific electronic
molecular states. At electron energies of a few electron volts,
this "scanning near-field electron transmission microscopy"
method could be applied to various adsorbates or thin layers.
* To whom correspondence should be addressed. E-mail: rolf.moeller{at}uni.due-de
