TY  - JOUR
AU  - Persson, B. N. J.
AU  - Zhao, K.
AU  - Zhang, Z. Y.
TI  - Chemical contribution to surface-enhanced Raman scattering
JO  - Physical review letters
VL  - 96
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-53860
SP  - 207401
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - We present a new mechanism for the chemical contribution to surface-enhanced Raman scattering (SERS). The theory considers the modulation of the polarizability of a metal nanocluster or a flat metal surface by the vibrational motion of an adsorbed molecule. The modulated polarization of the substrate coupled with the incident light will contribute to the Raman scattering enhancement. We show that for a metal cluster and for a flat metal surface this new chemical contribution may enhance the Raman scattering intensity by a factor of similar to 10(2) and similar to 10(4), respectively. The new SERS process is determined by the electric field parallel to the surface of the metal substrate at the molecular binding site.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000237847000050
DO  - DOI:10.1103/PhysRevLett.96.207401
UR  - https://juser.fz-juelich.de/record/53860
ER  -