Vibrational response of surface adsorbates to femtosecond substrate heating

J. P. Culver; M. Li; L. G. Jahn; R. M. Hochstrasser; A. G. Yodh

doi:10.1016/0009-2614(93)85661-7

Vibrational response of surface adsorbates to femtosecond substrate heating

J. P. Culver, M. Li, L. G. Jahn, R. M. Hochstrasser, A. G. Yodh

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Abstract

The transient response of the internal stretch vibration of CO molecularly adsorbed on Cu(111) has been measured following the impulsive (300 fs) excitation of electrons in the underlying metal substrate by a visible light pulse. It is proposed that the stretch vibration couples indirectly to substrate phonon and electron reservoirs via the frustrated translational surface mode. The couplings to the bulk electron reservoir with a rate γ_e= 167(24) GHz, and to the bulk phonon reservoir with a rate γ_L= 145(56) GHz were measured. The experiments represent an important step towards surface control of specific states of molecular adsor- bates near their desorption threshold.

Original language	English
Pages (from-to)	431-437
Number of pages	7
Journal	Chemical Physics Letters
Volume	214
Issue number	5
DOIs	https://doi.org/10.1016/0009-2614(93)85661-7
State	Published - Nov 12 1993

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title = "Vibrational response of surface adsorbates to femtosecond substrate heating",

abstract = "The transient response of the internal stretch vibration of CO molecularly adsorbed on Cu(111) has been measured following the impulsive (300 fs) excitation of electrons in the underlying metal substrate by a visible light pulse. It is proposed that the stretch vibration couples indirectly to substrate phonon and electron reservoirs via the frustrated translational surface mode. The couplings to the bulk electron reservoir with a rate γe= 167(24) GHz, and to the bulk phonon reservoir with a rate γL= 145(56) GHz were measured. The experiments represent an important step towards surface control of specific states of molecular adsor- bates near their desorption threshold.",

author = "Culver, {J. P.} and M. Li and Jahn, {L. G.} and Hochstrasser, {R. M.} and Yodh, {A. G.}",

note = "Funding Information: It is a pleasure to acknowledge useful conversations with Charles Kane, Gene Mele and Jeff Owrutsky. This work has been supported by the NSF MRL program through Grant No. DMR-9120668. AGY acknowledges partial support from the NSF through the PYI Program, and from the Alfred P. Sloan Foundation. RMH acknowledges partial support through grants from the NIH and the NSF.",

year = "1993",

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doi = "10.1016/0009-2614(93)85661-7",

language = "English",

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T1 - Vibrational response of surface adsorbates to femtosecond substrate heating

AU - Culver, J. P.

AU - Li, M.

AU - Jahn, L. G.

AU - Hochstrasser, R. M.

AU - Yodh, A. G.

N1 - Funding Information: It is a pleasure to acknowledge useful conversations with Charles Kane, Gene Mele and Jeff Owrutsky. This work has been supported by the NSF MRL program through Grant No. DMR-9120668. AGY acknowledges partial support from the NSF through the PYI Program, and from the Alfred P. Sloan Foundation. RMH acknowledges partial support through grants from the NIH and the NSF.

PY - 1993/11/12

Y1 - 1993/11/12

N2 - The transient response of the internal stretch vibration of CO molecularly adsorbed on Cu(111) has been measured following the impulsive (300 fs) excitation of electrons in the underlying metal substrate by a visible light pulse. It is proposed that the stretch vibration couples indirectly to substrate phonon and electron reservoirs via the frustrated translational surface mode. The couplings to the bulk electron reservoir with a rate γe= 167(24) GHz, and to the bulk phonon reservoir with a rate γL= 145(56) GHz were measured. The experiments represent an important step towards surface control of specific states of molecular adsor- bates near their desorption threshold.

AB - The transient response of the internal stretch vibration of CO molecularly adsorbed on Cu(111) has been measured following the impulsive (300 fs) excitation of electrons in the underlying metal substrate by a visible light pulse. It is proposed that the stretch vibration couples indirectly to substrate phonon and electron reservoirs via the frustrated translational surface mode. The couplings to the bulk electron reservoir with a rate γe= 167(24) GHz, and to the bulk phonon reservoir with a rate γL= 145(56) GHz were measured. The experiments represent an important step towards surface control of specific states of molecular adsor- bates near their desorption threshold.

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U2 - 10.1016/0009-2614(93)85661-7

DO - 10.1016/0009-2614(93)85661-7

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AN - SCOPUS:0000868788

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 5

ER -

Vibrational response of surface adsorbates to femtosecond substrate heating

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