title: Real-time observation of nonadiabatic surface dynamics: the first picosecond in the dissociation of NO on iridium.
abstract: Ultrafast laser pulses on Ir{111} cause a highly temperature-dependent redshift of the intramolecular stretch frequency of adsorbed NO. The time-resolved spectral changes are driven by charge transfer of hot electrons to the NO 2pi*d antibonding orbital, which leads to bending of NO and internal bond weakening. The nonadiabatic change in the NO adsorption geometry follows the charge transfer within a time scale of 700 femtoseconds. This geometrical change is the same as the mechanism predicted for thermally induced dissociation.
authors.affiliation: Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
authors.forename: Ian M
authors.initials: IM
authors.lastname: Lane
authors.forename: David A
authors.initials: DA
authors.lastname: King
authors.forename: Zhi-Pan
authors.initials: ZP
authors.lastname: Liu
authors.forename: Heike
authors.initials: H
authors.lastname: Arnolds