1998/11/17 by Peter Kratzer, P. Kratzer, E. Pehlke +5
Earth and Planetary Sciences · Physics and Astronomy · #Advanced Chemical Physics Studies #Quantum, superfluid, helium dynamics #cond-mat #nanoparticles nucleation surface interactions
paper · pdf · doi:10.1103/physrevlett.81.5596
5 pages, 4 figures, submitted to Phys. Rev. Lett. (1998). Other related publications can be found at http://www.fhi-berlin.mpg.de/th/paper.html
arxiv created 1998/11/17 · openalex publication_date 1998/12/21 · arxiv updated 2009/11/30 · openalex created_date 2020/05/13 · openalex updated_date 2026/07/28
Experimental and theoretical results for the dissociative adsorption of H2 on vicinal Si(001) surfaces are presented. Using optical second-harmonic generation, sticking probabilities at the step sites are found to exceed those on the terraces by up to 6 orders of magnitude. Density functional theory calculations indicate the presence of direct adsorption pathways for monohydride formation but with a dramatically lowered barrier for step adsorption due to an efficient rehybridization of dangling orbitals.