AVS 45th International Symposium
    Surface Science Division Wednesday Sessions
       Session SS3-WeM

Paper SS3-WeM1
The Atomic Steps of Oxygen Adsorption on Pt(110)-(1x2)

Wednesday, November 4, 1998, 8:20 am, Room 314/315

Session: Surface Dynamics and Roughening
Presenter: F. Besenbacher, Aarhus University, Denmark
Authors: S. Helveg, Aarhus University, Denmark
S. Horch, Aarhus University, Denmark
I. Stensgaard, Aarhus University, Denmark
E. Laegsgaard, Aarhus University, Denmark
F. Besenbacher, Aarhus University, Denmark
Correspondent: Click to Email
The dissociative adsorption of Oxygen on the Pt(110)-(1x2) surface is studied using a variable-temperature, fast Scanning Tunneling Microscope. The dynamic information extracted from the STM movies direct reveal how the O structures develop as function of O coverage. A variety of new and novel O structures are observed on the atomic scale. These initial structures develop at higher O coverage into [110] oriented stripes which self organize into highly regular and periodic bands. From an interplay between these STM results and theoretical GGA calculations a new and coherent picture evolves for O adsorption on Pt(110). This picture deviates significantly from previously proposed structural models but we can within the new picture explain all previous experimentally obtained results.