Dresden 2014 – scientific programme

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O: Fachverband Oberflächenphysik

O 48: Scanning Probe Methods I

O 48.9: Talk

Wednesday, April 2, 2014, 12:30–12:45, GER 38

The influence of the tip geometry on picking up a CO molecule — •Daniel Meuer and Franz J. Giessibl — Institute of Experimental and Applied Physics, University of Regensburg, D-93053 Regensburg, Germany

CO tip termination allows increased AFM resolution of carbon based molecules and structures by imaging, for instance, carbon back bonds [1,2]. Furthermore it has been shown that a measure of the bond order and the length of covalent bonds is possible with CO functionalized tips [2]. Our group has shown that it is possible to identify the orientation of the front most tip atom, using a CO molecule chemisorbed to a Cu(111) surface [3]. This allows us to investigate the influence of the metal tip geometry on the likelihood of picking up a CO molecule.

References

[1] L. Gross et al., Science 325, 1110 (2009)

[2] L. Gross et. al., Science 337, 1329 (2012)

[3] J. Welker and F. J. Giessibl, Science 336, 444 (2012)