E lectron–phonon couplings at C60 interfaces: a case study by two- color, infrared–visible sum–frequency generation spectroscopy

Caudano, Yves; Silien, C.; Humbert, Christophe; Dreesen, Laurent; Mani, A. A.; Peremans, A.; Thiry, P. A.

doi:10.1016/S0368-2048(03)00062-8

Article (Scientific journals)

E lectron–phonon couplings at C60 interfaces: a case study by two- color, infrared–visible sum–frequency generation spectroscopy

Caudano, Yves; Silien, C.; Humbert, Christophe et al.

2003 • In Journal of Electron Spectroscopy and Related Phenomena, 129, p. 139-147

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https://hdl.handle.net/2268/26732

DOI
10.1016/S0368-2048(03)00062-8

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Abstract :

[en] We demonstrate the ability of doubly resonant sum–frequency generation (DR-SFG) to investigate electron–phonon couplings at C60 –metal interfaces. Due to its coupling to electronic transitions, the totally symmetric Ag(2) vibration of C60 exhibits a huge enhancement of its nonlinear response for sum–frequency energies above the molecular electronic gap. We attribute this resonance to the coupling of the pentagonal pinch mode with the tiu lowest unoccupied molecular orbital (LUMO) of C60.

Disciplines :

Physics

Author, co-author :

Caudano, Yves

Silien, C.

Humbert, Christophe

Dreesen, Laurent ; Université de Liège - ULiège > Département de physique > Biophotonique

Mani, A. A.

Peremans, A.

Thiry, P. A.

Language :

English

Title :

E lectron–phonon couplings at C60 interfaces: a case study by two- color, infrared–visible sum–frequency generation spectroscopy

Publication date :

2003

Journal title :

Journal of Electron Spectroscopy and Related Phenomena

ISSN :

0368-2048

Publisher :

Elsevier Science, Amsterdam, Netherlands

Volume :

129

Pages :

139-147

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 26 October 2009

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