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Dynamics of Electron-Induced Manipulation of Individual CO Molecules on Cu(111)

MPS-Authors

Velic,  Dusan
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Knoesel,  Ernst
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Hotzel,  Arthur
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

Wolf,  Martin
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Ertl,  Gerhard
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Fulltext (public)

PhysRevLett.80.2004.pdf
(Publisher version), 757KB

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Citation

Bartels, L., Meyer, G., Rieder, K.-H., Velic, D., Knoesel, E., Hotzel, A., et al. (1998). Dynamics of Electron-Induced Manipulation of Individual CO Molecules on Cu(111). Physical Review Letters, 80(9), 2004-2007. doi:10.1103/PhysRevLett.80.2004.


Cite as: http://hdl.handle.net/21.11116/0000-0006-C419-1
Abstract
Electrons tunneling from a scanning tunneling microscope tip to individual CO molecules on Cu(111) can cause their hopping from the surface to the tip if the bias exceeds a threshold of 2.4 V. Polarization- and time-resolved two-photon photoemission identifies the underlying elementary process as intermediate population of a CO 2π* -derived level, which exhibits an ultrashort lifetime of 0.8–5 fs. From an isotope effect of 2.7 - 0.5 + 0.3 it can be calculated that ≈ 0.05 % of the tunneling current transiently occupies this level while a desorption of the excited molecule occurs only in 5 × 10 - 9 of the cases.