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

Yves Caudano; Christophe Silien; Christophe Humbert; Laurent Dreesen; Alaa Addin Mani; André Peremans; Paul Thiry

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

Yves Caudano, Christophe Silien, Christophe Humbert, Laurent Dreesen, Alaa Addin Mani, André Peremans, Paul Thiry

Namur Research Institute for Life Sciences

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Abstract

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 t1u lowest unoccupied molecular orbital (LUMO) of C60.

Original language	English
Pages (from-to)	139-147
Number of pages	9
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	129
Issue number	2-3
Publication status	Published - 2003

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http://dx.doi.org/10.1016/S0368-2048(03)00062-8

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title = "Electron-phonon couplings at C60 interfaces: a case study by two-color, infrared-visible sum-frequency generation spectroscopy",

abstract = "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 t1u lowest unoccupied molecular orbital (LUMO) of C60.",

author = "Yves Caudano and Christophe Silien and Christophe Humbert and Laurent Dreesen and Mani, {Alaa Addin} and Andr{\'e} Peremans and Paul Thiry",

year = "2003",

language = "English",

volume = "129",

pages = "139--147",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

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TY - JOUR

T1 - Electron-phonon couplings at C60 interfaces: a case study by two-color, infrared-visible sum-frequency generation spectroscopy

AU - Caudano, Yves

AU - Silien, Christophe

AU - Humbert, Christophe

AU - Dreesen, Laurent

AU - Mani, Alaa Addin

AU - Peremans, André

AU - Thiry, Paul

PY - 2003

Y1 - 2003

N2 - 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 t1u lowest unoccupied molecular orbital (LUMO) of C60.

AB - 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 t1u lowest unoccupied molecular orbital (LUMO) of C60.

M3 - Article

VL - 129

SP - 139

EP - 147

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

IS - 2-3

ER -

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

Abstract

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