Wutscher, Thorsten and Weymouth, Alfred J. and Giessibl, Franz J.
Localization of the phantom force induced by the tunneling current.
Physical Review B (PRB) 85 (19), p. 195426.
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Other URL: http://link.aps.org/doi/10.1103/PhysRevB.85.195426
The phantom force is an apparently repulsive force, which can dominate the atomic contrast of an AFM image when a tunneling current is present. We described this effect with a simple resistive model, in which the tunneling current causes a voltage drop at the sample area underneath the probe tip. Because tunneling is a highly local process, the areal current density is quite high, which leads to ...
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