科研之友
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摘要
Hot electrons created by femtosecond laser pulses can transiently increase the occupation of the antibonding 2 pi* orbital of a diatomic adsorbate and change its bonding configuration. By monitoring the intramolecular stretch frequency of CO and NO on Ir{111} with time-resolved sum frequency spectroscopy, we demonstrate how the vibrational dynamics depend on the degree of charge flow between the surface and the adsorbate. We find CO and NO to be model adsorbates for adiabatic and nonadiabatic dynamics, respectively.
- 出版日期2007-9-27
- 单位复旦大学
