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@ARTICLE{Hapala:201038,
author = {Hapala, Prokop and Kichin, Georgy and Wagner, Christian and
Tautz, Frank Stefan and Temirov, Ruslan and Jelínek, Pavel},
title = {{M}echanism of high-resolution {STM}/{AFM} imaging with
functionalized tips},
journal = {Physical review / B},
volume = {90},
number = {8},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2015-03348},
pages = {085421},
year = {2014},
abstract = {High-resolution atomic force microscopy (AFM) and scanning
tunneling microscopy (STM) imaging with functionalized tips
is well established, but a detailed understanding of the
imaging mechanism is still missing. We present a numerical
STM/AFM model, which takes into account the relaxation of
the probe due to the tip-sample interaction. We demonstrate
that the model is able to reproduce very well not only the
experimental intra- and intermolecular contrasts, but also
their evolution upon tip approach. At close distances, the
simulations unveil a significant probe particle relaxation
towards local minima of the interaction potential. This
effect is responsible for the sharp submolecular resolution
observed in AFM/STM experiments. In addition, we demonstrate
that sharp apparent intermolecular bonds should not be
interpreted as true hydrogen bonds, in the sense of
representing areas of increased electron density. Instead,
they represent the ridge between two minima of the potential
energy landscape due to neighboring atoms.},
cin = {PGI-3 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)PGI-3-20110106 / $I:(DE-82)080009_20140620$},
pnm = {422 - Spin-based and quantum information (POF2-422)},
pid = {G:(DE-HGF)POF2-422},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000340744200004},
doi = {10.1103/PhysRevB.90.085421},
url = {https://juser.fz-juelich.de/record/201038},
}