U. Dürig
New Journal of Physics
Tip sample interaction forces were investigated during normal tunnelling operation of the STM using an Ir tip and a polycrystalline Ir sample. Metallic adhesion interaction was observed for tunnel conductivity ranging from 10−6 to 19−9Ω‐1 implying that the actual gap width was of the order of 1–4 Å. Similar experiments performed on a polycrystalline Al sample exposed to 1 Langmuir O2 showed that tip sample interaction changed from attractive to repulsive on well‐defined areas extending over ∼100 Å2 which we identified with the oxidized Al surface. 1988 Blackwell Science Ltd
U. Dürig
New Journal of Physics
U. Dürig, J.K. Gimzewski, et al.
Physical Review Letters
D. Pohl, J.K. Gimzewski
Optics in Complex Systems 1990
W.H. Teh, U. Dürig, et al.
Journal of Applied Physics