Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1998-05-27
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
We study local oxidation induced by dynamic atomic force microscopy (AFM), commonly called TappingMode AFM. This minimizes the field induced forces, which cause the tip to blunt, and enables us to use very fine tips. We are able to fabricate Ti/TiOx line grids with 18 nm period and well defined isolating barriers as small as 15 nm. These junctions show a non-linear current-voltage characteristic and an exponential dependence of the conductance on the oxide width, indicating tunneling as the dominant conduction mechanism. From the conductance - barrier width dependence we derive a barrier height of 178 meV. Numerical calculations of the lateral field distribution for different tip geometries allow to design the optimum tip for the most localised electric field. The electron-beam-deposition (EBD) technique makes it possible to actually produce tips of the desired geometry.
Irmer B.
Kehrle M.
Kotthaus Jörg. P.
Lorenz Hilmar
No associations
LandOfFree
Nanolithography by non-contact AFM induced local oxidation : Fabrication of tunneling barriers suitable for single electron devices 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 Nanolithography by non-contact AFM induced local oxidation : Fabrication of tunneling barriers suitable for single electron devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nanolithography by non-contact AFM induced local oxidation : Fabrication of tunneling barriers suitable for single electron devices will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-725227