Abstract
We report the surface temperature dependence for Δv=+1 vibrational excitation of NO( v=2) due to collisions with Au(1 1 1) at two incidence energies. This is compared to previous measurements on Ag(1 1 1) and Cu(1 1 0). The standard model for electron hole pair mediated vibrational excitation predicts that all three metals will exhibit a nearly Arrhenius temperature dependence with the same effective activation energy. While scattering on Ag(1 1 1) and Cu(1 1 0) obey this prediction, our new results show that the temperature dependence is non-Arrhenius on Au(1 1 1). We suggest that the large spin–orbit interaction present for Au(1 1 1) surface states may be important for vibrational excitation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.