Electric field gradient effects in raman spectroscopy.
Phys Rev Lett
; 85(19): 4180-3, 2000 Nov 06.
Article
en En
| MEDLINE
| ID: mdl-11056654
ABSTRACT
Raman spectra of materials subject to strong electric field gradients, such as those present near a metal surface, can show significantly altered selection rules. We describe a new mechanism by which the field gradients can produce Raman-like lines. We develop a theoretical model for this "gradient-field Raman" effect, discuss selection rules, and compare to other mechanisms that produce Raman-like lines in the presence of strong field gradients. The mechanism can explain the origin and intensity of some Raman modes observed in SERS and through a near-field optical microscope (NSOM-Raman).
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01-internacional
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MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2000
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Article
País de afiliación:
Estados Unidos
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EEUU
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ESTADOS UNIDOS
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ESTADOS UNIDOS DA AMERICA
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EUA
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UNITED STATES
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UNITED STATES OF AMERICA
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USA