Dephasing of vibrationally excited molecules at surfaces: CO/Ru(001)

被引：17

作者：

Bonn, M

Hess, C

Roeterdink, WG

Ueba, H

Wolf, M

机构：

[1] Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands

[2] FOM, Inst Atom & Mol Phys, NL-1098 SJ Amsterdam, Netherlands

[3] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[4] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[5] Toyama Univ, Dept Elect, Gofu Ku, Toyama, Japan

[6] Free Univ Berlin, Fachbereich Phys, D-14195 Berlin, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 388卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2004.03.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The v = 0 --> 1 fundamental and the v = 1 --> 2 hot-band transitions of the C-O stretch vibration of CO chemisorbed on Ru(00 1) are investigated as a function of temperature using broadband-IR sum-frequency generation spectroscopy. Although the linewidths are markedly different for the two transitions, we demonstrate that the temperature-dependent contribution to the linewidths from anharmonic coupling to the low-frequency frustrated translation mode (giving rise to pure dephasing) is identical for both transitions. This implies that the anharmonic Coupling between the high-frequency and the low-frequency mode is independent of the degree of vibrational excitation. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：269 / 273

页数：5

共 25 条

[1]

AMBROSEO JR, 1988, J CHEM PHYS, V89, P331

[2] ULTRAFAST INFRARED-SPECTROSCOPY OF VIBRATIONAL CO-STRETCH UP-PUMPING AND RELAXATION DYNAMICS OF W(CO)(6) [J].