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Surface-enhanced and STM tip-enhanced Raman spectroscopy of CN– ions at gold surfaces

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Pettinger,  Bruno
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Picardi,  Gennaro
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Schuster,  Rolf
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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Citation

Pettinger, B., Picardi, G., Schuster, R., & Ertl, G. (2003). Surface-enhanced and STM tip-enhanced Raman spectroscopy of CN– ions at gold surfaces. Journal of Electroanalytical Chemistry, 554-555, 293-299. doi:10.1016/S0022-0728(03)00242-0.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-0F05-3
Abstract
Combined surface- and tip-enhanced Raman spectroscopy (SERS and TERS, respectively) experiments for CN– adsorbed at Au-surfaces are presented. STM tip-induced frequency shifts for the CN-stretch vibration are observed. This effect is attributed to a distinct weighting of the individual contributions to TERS, depending on the particular field distribution, which peaks underneath the tip apex and drops quickly beyond this region.