Aim of this paper is to find out a simple model, which provides more insight into the relation between the tunneling current and the chemical force arising during formation of atomic contact in between a SPM probe and surface atom.
Cite
@article{arxiv.1006.3729,
title = {Relation between chemical force and tunneling current in point contacts: a simple model},
author = {Pavel Jelinek and Fernando Flores},
journal= {arXiv preprint arXiv:1006.3729},
year = {2011}
}