Abstract

On the basis of different types of experiments, the authors develop implicitly the model of surface-enhanced Raman scattering (SERS) of adsorbates on metal surfaces. The long-range enhancement by resonances of the macroscopic laser and Stokes field is separated quantitatively from the metal electron-mediated resonance Raman effect. The latter mechanism proceeds by increased electron-photon coupling at an atomically rough surface and by temporary charge transfer to orbitals of the adsorbates. This model can account for the chemical specificity and vibrational selectivity of SERS and (partly) for the SERS specificity of the various metals.

Keywords

Raman scatteringRaman spectroscopyAtomic orbitalMetalMaterials scienceChemical physicsScatteringResonance (particle physics)Molecular physicsElectron transferElectronCoupling (piping)ChemistryAtomic physicsPhotochemistryOpticsPhysics

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Publication Info

Year
1992
Type
article
Volume
4
Issue
5
Pages
1143-1212
Citations
1423
Access
Closed

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A. Otto, I. Mrozek, H. Grabhorn et al. (1992). Surface-enhanced Raman scattering. Journal of Physics Condensed Matter , 4 (5) , 1143-1212. https://doi.org/10.1088/0953-8984/4/5/001

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DOI
10.1088/0953-8984/4/5/001