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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},
}